FIELD OF THE INVENTION 
       [0001]    This invention relates to the field of protective covers for hoses of cleaning and extraction equipment, and especially to removable sleeves for covering one or more hoses running from a central unit to a cleaning structure that accesses a surface or object to be cleaned and extracts material from the area through the hose. 
       BACKGROUND OF THE INVENTION 
       [0002]    Cleaning systems of the prior art commonly have a central unit or other device, e.g., a canister, that supplies cleaning fluid or gas, e.g., steam, which is frequently boiling-hot fluid or steam, via a supply hose to some sort of applicator or cleaning head that sprays or distributes the fluid or steam onto surfaces to be cleaned. The central unit also has a portion that operates like a vacuum cleaner and extracts the liquid, steam and any dirt that has been mixed therewith at the applicator head through an extraction hose connected with it back to the central unit. In the central unit, the dirt or other material from the cleaned surface is separated from the air drawn in, and usually also separated from the cleaning fluid returned through the extraction hose. 
         [0003]    These cleaning systems are used in a wide variety of situations, ranging from routine cleaning of residential or office buildings to disaster recovery, vent and dust cleaning, hard-surface floor cleaning, tank cleaning, sewer cleaning, etc. The central units may be portable, or may be larger movable units on wheels or mounted in a vehicle, or possibly stationary units. A portable unit has the advantage of being movable inside a building being cleaned, while a larger system, e.g., a vehicle-mounted unit, cannot be brought into a building to be cleaned, but has other advantages, including higher power and greater storage capacity for cleaning fluid or dirt picked up. 
         [0004]    Especially with less movable systems, a longer extractor hose is needed to run from the vehicle to the location of the cleaning, where the cleaning head is located. A hose of this type may need to run long distances, e.g., from 20 feet to hundreds of feet, and often taking a winding route, such as through the rooms of the interior of a building. The extractor hose on a larger, vehicle-based system is generally much larger in diameter than standard vacuum hoses and usually made of hard corrugated plastic, with corrugations defined by circumferential ridges and grooves, to allow it to sustain the vacuum with the larger diameter. This type of hose is more rigid than smaller residential vacuum hoses, and, because of its greater rigidity, movement of the end of the hose causes movement over the entire length of the hose. During that type of movement, the corrugations of the hose can catch on or abrade objects such as furniture, floors, woodwork, walls, etc., that it contacts, resulting in damage that can be significant. Furthermore, the amount of relative vacuum formed in the extraction hose is quite high, with hundreds of psi suction being applied, and this amount of vacuum suction may cause forces in the hose that make it move, potentially damaging nearby objects. 
         [0005]    When the system employs a hot fluid supply hose, the additional hose carrying high-temperature fluid runs in parallel with the extractor hose. The second hose may cause damage due to physical contact, and that is potentially compounded by the high temperature of the hose, which can itself cause heat damage. In addition, the hot hose is more difficult to handle because the user needs to be protected from exposure to hot parts, especially metallic connectors or other metallic parts exposed to the heated liquid or steam. 
       SUMMARY OF THE INVENTION 
       [0006]    It is accordingly an object of the present invention to provide a protective covering for a hose of a cleaning system that avoids the problems encountered in the prior art. 
         [0007]    According to an aspect of the invention, a cleaning system comprises a unit having a suction source intaking air. An extractor hose has a first end connected to the suction source and a second opposite end. An intake vacuum head is configured to remove material from a surface to be cleaned. The vacuum head is connected with the second end of the extractor hose so that the suction source draws air and the material in through it, through the hose and to the suction source. A hose cover surrounds the extractor hose, and it comprises an elongate piece extending lengthwise of the extractor hose over a length. It has first and second complementary edges extending lengthwise thereof. The edges each have a respective zipper side of a zipper extending lengthwise of the elongate piece. The zipper sides co-act so as to releasably secure the edges together with the elongate piece of material surrounding the extraction hose over the length. The elongate piece of material is of insulating material that completely surrounds the hose over the length and protects a user from contact with the hose. 
         [0008]    According to another aspect of the invention, a supply hose extends generally alongside the extractor hose between a fluid supply source and a dispensing outlet structure adjacent the intake structure. The fluid supply source supplies a liquid or vapor to the supply hose so as to flow through the supply hose and out through the dispensing outlet structure. The hose cover also surrounds the supply hose over the cover length. 
         [0009]    The liquid or vapor supplied from the fluid supply source may be hot liquid e.g., cleaning fluid, neutralizing fluid, water, or other types of solutions, with a temperature of 120 degrees F. or higher. This hot fluid or steam is projected, potentially at pressure, out the dispensing outlet structure where it contacts surfaces of objects to be cleaned, carrying away with it dirt or other material from the objects, and the intake structure is located so as to draw in the resulting liquid or steam with the dirt or other material. 
         [0010]    According to another aspect of the invention, a cover configured to be placed around a portion of an extraction hose of a cleaning system comprises a rectangular piece of insulating material having a first inner side of heat resistant material capable of experiencing temperatures in excess of 200 degrees without damage, and an opposite side of different material having greater abrasion resistance than the material of the inner side. The rectangular piece has two longitudinal ends and longitudinal edges extending therebetween, each of the edges having secured thereto a longitudinally extending row of zipper teeth configured to mesh with each other when closed by a slide supported on one of the rows so that the rectangular piece becomes a tubular cover. The rectangular piece has a longitudinally extending flap of insulating material extending laterally past the zipper teeth on one of said edges so that the flap overlies the zipper when the zipper is closed. A complementary pair of coacting releasable securement structures are on the rectangular piece. One of the pair of securement structures is on an outward surface of one of the ends of the rectangular piece, and the other of the pair of securement structures is on an inward surface of the opposite end of the rectangular piece, such that the cover provides a female attachment structure at one end and a male attachment structure at the other end configured to attach the cover in longitudinal series to other similarly configured covers. 
         [0011]    According to still another aspect of the invention, a cleaning system hose structure comprises an extraction hose having a diameter of 2 inches or greater and configured to be attached to a suction source for drawing air through it, and a cleaning fluid supply hose extending alongside the extraction hose and carrying heated fluid from a fluid source. A cover system surrounds the hoses over at least part of an overall length thereof. The cover system comprises a plurality of substantially identical cover segments, each of which comprises a respective rectangular piece of insulating material having an inward side of heat-resistant material capable of experiencing temperatures in excess of 200 degrees substantially without damage, and an outward side of different material having greater abrasion resistance than the heat-resistant material. The outside abrasion-resistant material is also preferably resistant to chemicals and colorfast so that its color does not bleed or transfer onto objects if the material is wet by extremely hot water, possibly combined with chemicals or detergents. The rectangular piece has two longitudinal ends and longitudinal edges extending therebetween, each of the edges having secured thereto a longitudinally extending row of zipper teeth configured to mesh with each other when closed by a slide supported on one of the rows, so that the rectangular piece becomes a tubular cover around the extraction hose and the fluid supply hose over a portion of the length thereof. The rectangular piece has a flap of insulating material extending laterally past the zipper teeth on one of said edges so that the flap overlies the zipper when the zipper is closed. A complementary pair of coacting releasable securement structures are secured on the rectangular piece, one of said pair of securement structures being on an outward surface of one of the ends of the rectangular piece, and the other of said pair of securement structures being on an inward surface of the opposite end of the rectangular piece. A first of the cover segments is secured in longitudinal sequence with a second of the cover segments by the end of the first cover segment having the associated securement structure on the outward surface thereof secured in a tubular shaped structure formed by the end of the second cover segment having the securement structure on the inward side thereof. The securement structures coact to secure the end of the first cover segment in the end of the second cover segment with the first and second cover segments in longitudinal series around the hoses. 
         [0012]    The hose cover is preferably hand and machine washable. 
         [0013]    Other objects and advantages of the invention will become apparent from the specification herein, and the scope of the invention will be set out in the claims. 
     
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         [0014]      FIG. 1  is an illustration a mobile vehicle based cleaning system employing the present invention. 
           [0015]      FIG. 2  is a schematic diagram of the operation of a cleaning system employing the present invention. 
           [0016]      FIG. 3  is a detail view of the hose connections in the cleaning system. 
           [0017]      FIG. 4  is an inside view of a hose cover segment according to the invention. 
           [0018]      FIG. 5  is an outside view of the hose cover segment of  FIG. 4 . 
           [0019]      FIG. 6  is a view of the male/female connection between two sequential hose cover segments just prior to their assembly. 
           [0020]      FIG. 7  is a perspective view of the two hose cover segments of  FIG. 6  after connection. 
           [0021]      FIG. 8  is a partially cut away view showing two hose cover segments according to the invention surrounding an extraction hose and a cleaning fluid supply hose. 
           [0022]      FIG. 9  is a plan view of the inside of an alternate embodiment of hose cover segment. 
           [0023]      FIG. 10  is a plan view of the hose cover segment of  FIG. 9 . 
           [0024]      FIG. 11  is a plan view of the inside of another alternate embodiment of hose cover segment. 
           [0025]      FIG. 12  is a plan view of the outside of the hose cover segment of  FIG. 11 . 
           [0026]      FIG. 13  is an illustration of a portable or mobile cleaning unit employing the hose cover of the invention. 
       
    
    
     DETAILED DESCRIPTION OF THE INVENTION 
       [0027]    Referring to  FIG. 1 , larger cleaning systems are often configured to be moved from place to place by transportation, such as vehicle  3 . When a system is so deployed, frequently the vehicle will remain parked in a place distant from the building to be cleaned, and this requires the use of an extended hose system generally indicated at  5 . The hose system  5  leads to an user operated wand or tool structure generally indicated at  7 , which is provided with a cleaning head  9  through which cleaning fluid may be deployed to wet and cleanse the surface or object to be cleaned, and from which the fluid and dirt removed from the surface, and other dry materials in the area, such as dust, dirt, pollen, soot, etc., are extracted by vacuum which draws these materials through the hose system  5  to the central unit in the vehicle  3 . 
         [0028]    The connection of hose system  5  to the end structure head  7  may be a single extraction hose, similar to a residential vacuum but much more robust, intaking dirt from the head  9 , or it may also be a combination of such an extraction hose with a hose that supplies gas or fluid, e.g., water mixed with detergent, and particularly at a high temperature, through the cleaning end structure  7  to loosen dirt on a surface or object being cleaned. 
         [0029]    According to the invention, the hose  5  includes a set of outer hose cover segments  11  that surround the one or two constituent hoses over the length thereof, protecting the hose from external damage, and also preventing the hose system  5  from damaging the furniture, floors, woodwork, walls, etc., or other objects as the hose  5  extends through the building, or wherever it is being employed. 
         [0030]    Alternatively, the central unit may be a humanly-portable or movable system that does not reside in a vehicle, but can be moved by a user. Such a system, such as the system shown in  FIG. 13 , usually has a single central housing or canister body  203  that supplies and extracts fluid through a hose system  205  connected with cleaning head structure  209 . The canister  203  is usually supported on wheels so that the user can move it easily. Nonetheless, the hose system  205  can extend through a building or other location to the cleaning head  209 , and a hose cover  245  made up of several hose cover segments  211  secured sequentially around the hose system  205  is advantageously employed covering the hose system. 
         [0031]      FIG. 2  shows schematically a cleaning system that is either a vehicle-based system or a smaller portable system and employs the hose cover system according to the invention. The central cleaning unit  13  is usually located in one place, such as in a vehicle or in a more stationary position or installation, although the central cleaning unit may also be in the movable part of a portable unit, such as a large canister that can be moved around on wheels. 
         [0032]    Central cleaning unit  13  includes a cleaning fluid supply system  15  that has a fluid supply reservoir  17  connected to a heating system  19  that receives the fluid, heats it and dispenses it through the fluid outlet  21 . Fluid outlet  21  connects with a hose structure  23  that extends the length of hose system  5  to a user operated cleaning apparatus end structure indicated at  7 . The unit end structure  7  may include a handle  25  with various controls (not shown) and a final usually rigid tube connecting the hose  27  with some configuration of cleaning head  9 . The configuration of the head  9  can vary greatly depending on the application. The specific design of the head is not especially pertinent, in that a variety of different configurations may be used with any given hose system  5 . However, particularly preferred are those cleaning heads that allow for connection to a hose supplying cleaning fluid that is sprayed by the head, and that have an industrial strength vacuum connection that effectively collects the dirt and also any excess cleaning fluid from the location. 
         [0033]    The hose  23  carries fluid to the end structure  7 , and an internal conduit in it (not shown) connects with the hose  23  and carries the pressurized hot fluid to the final connector tubes  31 , which transmit the cleaning fluid to the head  9 , which sprays the fluid onto the surface to be cleaned, generally indicated at  33 . 
         [0034]    Central cleaning unit  13  also includes a vacuum-suction extraction system  35 , which includes a suction intake  37  connected with an intake tube  39  connected with an elongated, flexible, usually corrugated, hose  41 , or intake  37  may be connected directly with hose  41 . Hose  41  extends from intake  37  or tube  39  to the cleaning head end structure  7 . The hose  41  connects to the end structure  7  by a vacuum-tight connection to a rigid tube or conduit connecting the hose  41  to the head  9 , so that suction in the hose  41  causes air to be sucked in through the head  9 , collecting dirt and liquid on the surface, and any other material in the vicinity, through the tubular part  27  of the end unit  7 , and into the hose  41 . 
         [0035]    The vacuum extraction system may also include a waste processing unit  43  that receives the material drawn in by the suction intake  37  and treats in one of a variety of ways, e.g., by filtering the waste from the fluid and restoring the fluid in some sort of treated way to the fluid supply reservoir  17 , or by simply withdrawing the air from the air that is drawn in from the suction intake by filtering out all the liquid and particulate material in the waste stream, as is well known in the art. 
         [0036]    Hoses  23  and  41  extend from the central unit  13  a length of from 20 to 200 or more feet. For the protection of the hose as well as objects in this area and users of the device, a hose cover system  45  surrounds and encloses the hose  23  supplying the heated cleaning fluid or gas to the head  9  and the hose  41  extracting dirt and excess cleaning fluid from the head  9 . Hose cover system  45  is comprised of one or more cover segments  11  connected in sequence to cover the hoses  23  and  41  essentially from the connection to the suction intake to the user-accessible cleaning head end structure  7 . 
         [0037]    As best seen in  FIG. 3 , the intake hose  41  and the fluid supply hose  23  may be in longitudinally connected segments, such as, e.g., fluid supply hose segments  51  and  53  or extractor hose segments  55  and  57 . The hose  23  itself is generally formed of a thick rubber material. The hose  41  and its elements are generally formed of a fairly rigid plastic material having a series of corrugations  67  therein. The segments are connected by appropriate structures, for example, the male and female connectors  59  and  61 , usually metallic of brass, between the fluid supply hose segments  51  and  53 , and also the male/female extractor hose connections  63  and  65  that clip one inside the other so as to sealingly join the hose segments  55  and  57  in sequence. These are pressure tight connections that can sustain pressures of several atmospheres. 
         [0038]    The connectors serve to link lengths of the hoses  23  and  41  to each other, but similar connections link the hoses  23  and  41  to the relevant parts of the central unit  13  and the user tool structure  7 . For example, the suction intake  37  may have a female connection like connection  65  that receives the male connector end  63  of the first hose segment at the central unit  13  in the extraction hose  41  so hose  41  plugs directly into it. Similarly, the heating system  19  may have a female connection such as female connector  61  that receives the male connection end  59  of the hose  23  inserted directly into the heating system  19  so to receive the heating into the hose. 
         [0039]    Similarly, the user wand or tool end structure  7  also may have therein an appropriate coupling structure connected with the final segments of the fluid supply hose  23  and the extraction hose  41 . For instance, the connecting end of tool  7  may have male connectors like portions  59  and  63  that fit into the female connectors  65  and  61  at the ends of the hoses  41  and  23  respectively. 
         [0040]      FIGS. 4 and 5  show the inside and outside view of a single hose cover segment  11 , shown here unzipped without the hoses  23  or  41  present. The body of the hose cover element  11  is a rectangular piece of fabric material. The material on the inside of the cover  11  that faces the heated hoses  23  and  41  is a polyester blended fabric material that is heat resistant up to about 450 to 490 degrees F., and at those high temperatures it does not burn, but melts. This material that which allows cover  11  to be in contact with the potentially boiling hot water that may be supplied through the hose  23  and also the fairly hot water that returns through the extractor hose  41  after contact with the surface to be cleaned. 
         [0041]    The material particularly preferred for the inside surface material is 8.5 ounce 50/50 polyester cotton knit fabric with, its knit face facing the hose being covered and the soft nap pile backside facing outward. The polyester blended fabric material is layered by being quilted to layers of polyester batting between the outside and inside surfaces of the cover  11 . The quilted material adds padding to the cover  11 , which provides added protection to objects from the hose, and has a thickness of additional layers of fabric or insulator that prevent heat from passing to any great degree through the cover  11  and makes the hose exterior with the cover  11  amenable to be handled by a user without gloves despite the heat of the hoses  23  and  41 . The polyester batting is 3 to 4 ounce polyester batting. 
         [0042]    The central piece of material  71  is essentially rectangular and of a length that may range from 5 feet to 30 feet or more, depending on the application. The central piece  71  has a closed edge  73  sewn around its periphery, which includes two longitudinally extending edge portions  75  and  77  extending over its length. Each edge  75  and  77  has affixed thereto by sewing or other means a respective co-acting row of zipper teeth or half  79  or  81  of a zipper that extends over a substantial part the entire length of the cover segment  11 . The zipper used may be metal or temperature resistant plastic, and is of a typical configuration, having a pull tab slide generally indicated at  83  on one of the teeth rows or halves  79  of the zipper. The pull tab slide  83  is of a configuration that it can be separated from the other zipper end part or lower stop  85  completely, similar to the bottom of a jacket, so that the two zipper halves  79  and  81  can be separated from each other, allowing removal of the cover  11  from the hoses. The zipper in the preferred embodiment is a no.  5  coil zipper with a separated bottom and a reversible head, meaning that the head or pull portion can be flipped from the outer side to the inward side of the zipper. 
         [0043]    The width of the material from zipper portion  79  to zipper portion  81  is sufficient to allow the cover  11  to extend around the extraction hose  41  and the fluid hose  23  together. The extraction hose typically has an outer diameter of approximately 2.5 inches, and the outer diameter of the fluid supply hose  23  is usually approximately 0.5 inches. The width of the material is preferably from 8 to 12 inches. 
         [0044]    The cover segment  11  further has a flap  87  of elongated rectangular shape secured to the edge of the rectangular body  71  of the cover segment  11  by stitching, and has its own edge  89  sewn therearound. The flap  87  has secured thereon a number of spaced co-acting halves of loop patches  91  of a hook-loop connection material structure, such as Velcro®. These patches are configured to align with and releasably attach with the complimentary hook patches  93  on the opposite outer side of the cover segment  11 , so that when the zipper halves  79  and  81  are zipped up, the flap  87  is secured overlying the zipper. The flap  87  is formed of the same insulating heat-resistant material as that of the body  71  of the hose cover segment  11 , to provide protection if the zipper is heated by the hoses. 
         [0045]    Referring to  FIG. 5 , the outer surface  80  of the hose cover segment  11  in both the rectangular body  71  and on the tab  87  is of a fabric that has an abrasion resistant and reduced friction surface that will prevent scuffing or damage to objects that the hose  5  may brush up against during operation, as well as avoiding being torn or damaged itself. As mentioned previously, the outer material is resistant to chemicals and also is colorfast, even when wet with chemicals, hot water or detergents. This outer fabric is preferably 600 Denier polyester; also suitable for this is Cordura® fabric. Other fabrics of a similar resistant and durable quality may also be employed. The outer fabric and inner fabric are secured to each other through the intermediate polyester batting by a single set of quilted stitches shown in  FIGS. 4 and 5 . These quilted stitches are in diamond pattern where the diamond shapes are 2 to 3 inches in length. 
         [0046]    The connection between adjacent hose cover segments is accomplished by a male/female connection at their ends. This is provided by a pair of co-acting pads of hook-loop material or Velcro®. Loop portion pad  95  is secured to the inside of one end  94  of the cover segment  11  and hook portion pad  97  is secured by adhesive, stitching or both to the outer surface of opposing end  98  of cover structure  11 . 
         [0047]    The connection of the hose cover element  11  to the hose  41  and  23  is secured by the zipper  77  and  79  being closed, but in addition it is helpful to have the two hoses  41  and  23  held together to prevent undue movement therebetween. To secure the hoses  23  and  41  together, at periodic points along the length of the body  71  of the hose cover element  11 , a pair of lashing laces or straps  99  are stitched or otherwise secured to the inside of the hose cover segment  11 . When the hose cover  11  is placed on the hoses, the lashing straps  99  are tied around both the hoses  23  and  41  to secure them together. The lashing tie downs  99  are preferably a polyester knit cord, but may be of another heat-resistant material. 
         [0048]    The assembly of the hose elements  11  in series is illustrated in  FIGS. 6 and 7 . 
         [0049]      FIG. 6  shows a first hose cover element  101  in serial alignment with hose cover element  103 . The hose cover elements  101  and  103  are aligned longitudinally so that the end  98  of hose cover segment  101  is adjacent the end  94  of hose cover element  103 . The loop patch  95  of hose cover segment  103  is placed over the hook patch portion  97  of hose cover element  101 , attaching the two segments removably together. When so applied, the two hose cover segments  101  and  103  form a single longitudinally extending structure generally indicated at  107  in  FIG. 7  with the two hook loop connectors attached at an overlapping portion generally indicated at  109 . 
         [0050]    After the combined structure shown in  FIG. 7  is formed by sequentially connecting the ends  94  and  98  of the set of hose cover segments  11  that will be used, two or more of the hose cover elements  11  are secured around the hoses  23  and  41 , as shown in  FIG. 8 . The hose  41  and hose  23  are tied together by the lashing structures  99  ( FIG. 4 ), and then the zipper halves  79  and  81  of each of the segments  101  and  103  are mated and zipped closed, resulting in the structure illustrated in  FIG. 8 , where the closed zipper  111  holds the cover  11  of each of the segments  11  closed around the hoses over that portion of the length of the hose  41  and/or  23  that the cover segment  11  is to surround. Flaps  89  are pressed down over the closed zipper  111  and Velcro® tabs  93  and  91  coact to keep this flap in place, protecting against the possibility of the heated hoses  23  and  41  potentially creating a hot zipper that should be guarded against as well. In this assembled condition, the connection between segments  101  and  103  indicated at  109  becomes a male/female connection in which the end  98  of cover segment  101  is held inside the female end  94  of the hose cover segment  103 . 
         [0051]    The other end of cover segment  101  is a female connection structure, and the other end of cover segment  102  is a male structure, so a larger number of segments  11  identical or similar to segments  101  and  103  may be assembled in the same way as segments  101  and  103 . In the assembled environment, the hose  41  and hose  23  are preferably encased in the hose cover  11  over all of, or a substantial portion of, the entire length thereof from the central unit to the handheld cleaning end structure  7 . 
         [0052]    The multi-segment cover allows for ease of handling of a manageable length of each cover segment. The same set covers can be used with hoses of any length, by using only as many as are necessary to produce the proper length cover. Also, damaged segments of the cover may be readily removed and replaced. There are possible weight savings, as well. 
         [0053]      FIGS. 9 and 10  show an alternate embodiment of a hose cover segment. Similar to the previous embodiment, the hose cover segment generally indicated at  121  has a rectangular central body of insulating material  123  inwardly disposed, and an abrasion resistant exterior material  125 . On the interior, the cover segment  121  is provided with a series of spaced tie or lashing devices  127  for securing the hoses  23  and  41  together, and also has elongated edges to which are attached the two edges of a zipper  129  and  131 , which operate similarly to the zipper in the previous embodiment. A flap of insulating material  133  is provided that with Velcro® or coacting loop structures  135  that secure the flap  133  over the zipper  129 ,  131  when closed by coacting connection with Velcro® hook patches  137 . 
         [0054]    In addition, the embodiment of  FIGS. 9 and 10  has an end cuff structure  141  and  143  at its ends. The end structures  141  and  143  work as respectively male and female parts of a lengthwise serial connection system that allows a series of these hose cover segments  121  to be connected together, similar to the previous embodiment seen in  FIGS. 6 ,  7  and  8 . 
         [0055]    Each cuff  141  has a band  145  of Velcro® hook material secured thereto which allows placement of the next segment  121  of the hose cover system at any rotative angle, i.e., so that the zippers do not necessarily align rotatively about a centerline of the hose  41 . This rotation is also possible in the previous embodiment. The opposing end  143  is provided with a smaller patch  147  of Velcro® hook material that coacts with a portion of the strip  145  of the next hose cover segment in the series if present. The hook connections  145  and  147  secure the segments  121  against longitudinal separation. 
         [0056]      FIGS. 11 and 12  show a further alternate embodiment of a section of hose cover. Hose cover segment  151  is a rectangular piece  153  of heat resistant material as in the previous embodiments. Two coacting halves  155  and  157  of a zipper are attached to longitudinal edges of the rectangular piece  153 . The ends of the segment  151  have cuffs  159  of the same material as piece  153 . The outer surfaces of both end cuffs  159  have a strip  160  of hook-securing material or Velcro®, and there is a plurality of spaced outward facing Velcro loop strips  161  secured to the outer surface  153  of segment  151 . Lashing laces or straps  164  are secured to the inside of the cover  151  to be tied around the hoses. Strips  163  of hook connector material are connected with and extend from the cuffs  159 , and strips  165  extend from one of the longitudinal edges of the piece  153 . When zipped closed around a hose or hoses, the strips  163  are wrapped around the cuffs and securingly attach to the hook strips  160 . 
         [0057]    This configuration of cover segment allows for connection of the segments  151  in sequence as well. When one cover segment  151  is zipped closed, the cuff of another cover segment  151  is wrapped around the cuff  159 . The strap  163  of the inside cuff is then wrapped around and secured to the hook strip  160  of the outer cuff  159 . 
         [0058]    It will be understood that the hose cover of the invention may be used with a two-hose system as illustrated, or a single hose system, which has only an extraction hose. Moreover, the terms used herein should be read as terms of description rather than terms of limitation, as those of skill in the art having this disclosure before them will be able to make modifications and adjustments therein without departing from the spirit of the invention.
A cleaning system has a suction source intaking air through an extractor hose with an opposite end at an intake vacuum head configured to remove material from a surface to be cleaned, so that the suction source draws air and the material in through it and through the hose. A hose cover around the extractor hose comprises an elongate piece of material with first and second lengthwise edges that each has a side of a zipper. The zipper sides co-act so as to releasably secure the edges together with the cover surrounding the extraction hose. The cover is of insulating material that protects a user from contact with the hose when hot and also prevents the hose from damaging nearby objects. Multiple hose covers can be connected in sequence by male and female connecting ends to cover a lengthy hose.