 diazonium salt condensation product, a polycondensation product containing repeat units AN.sub.2 X and B which are bonded to one another through intermediate moieties, preferably methylene groups. A denotes the radical of an aromatic diazonium compound which is condensable with formaldehyde, and B denotes the radical of a compound which is free of diazonium groups and condensable with formaldehyde. In particular, B is the radical of an aromatic amine, a phenol, a phenol ether, an aromatic thioether, an aromatic hydrocarbon, an aromatic heterocyclic compound or an organic acid amide.
Another U.S. Pat. No. 4,631,245 (priority date: February 8, 1984) describes a light-sensitive mixture, said to be particularly useful for preparing planographic printing plates, that contains a diazonium salt polycondensation product of the composition mentioned in the preceding paragraph and, as a binder, a reaction product of an intramolecular anhydride of an organic polycarboxylic acid with a hydroxyl-containing synthetic polymer. According to the application, the polymer should have no other functional groups that are capable of reacting with acid anhydrides. Endless tracks for track-propelled vehicles are well known. They essentially consist of an endless body made of reinforced rubber material wherein the ground engaging outer side of the body is formed of a series of longitudinally spaced profiles. Endless tracks mounted on snowmobiles are usually provided with a series of longitudinally spaced embedded rods to reinforce the rubber material. However, on other vehicles such as vehicles which are driven on snow or grounds that would not adequately support wheels, endless tracks, which are usually of smaller width than that found on snowmobiles, are provided without the presence of reinforcing rods as indicated above.
In Canadian patent application 2,319,934 filed Sep. 18, 2000 in the name of Soucy et al., there is provided a rubber band track with various hardnesses. However, the track described is characterized by a central portion made of rubber material having a hardness which is greater than the hardness of the rubber material in the opposite lateral band portions of the body.
However, it has been noted that some resiliency is needed in the central portion for the wheels which bear on the inner surface of the endless track. This invention relates to controls for hydraulically operated winches or the like.
Prior art of possible relevance includes U.S. Pat. No. 3,519,247 to Christison.
Winc
diazonium salt condensation product, a polycondensation product control repeat unit AN.sub.2 X and B which are bonded to one another through intermediate moiety, preferably methylene groups. A denotes the revolutionary of an aromatic diazonium compound which is condensable with formaldehyde, and bel denotes the extremist of a compound which is free of diazonium groups and condensable with formaldehyde. In finical, B is the radical of an aromatic amine, a carbolic acid, a phenol ether, an aromatic thioether, an aromatic hydrocarbon, an aromatic heterocyclic compound or an organic acid amide. 
 Another U.S. Pat. No. 4,631,245 (priority date: February 8, 1984) describes a light - sensible mixture, said to be particularly utilitarian for preparing planographic printing plates, that contains a diazonium salt polycondensation merchandise of the composition mentioned in the preceding paragraph and, as a binder, a reaction product of an intramolecular anhydride of an constituent polycarboxylic acid with a hydroxyl - containing synthetic polymer. According to the application, the polymer should have no other running group that are capable of reacting with acid anhydrides. Endless tracks for track - propelled vehicles are well known. They essentially dwell of an dateless body made of reinforced arctic material wherein the ground engaging out side of the body is formed of a series of lengthways spaced profiles. Endless tracks mounted on snowmobiles are usually provided with a series of longitudinally spaced embedded rod to reinforce the rubber eraser material. However, on other vehicles such as vehicles which are driven on coke or grounds that would not adequately support wheels, endless tracks, which are usually of smaller width than that found on snowmobiles, are put up without the presence of reinforce rods as indicated above. 
 In Canadian patent lotion 2,319,934 filed Sep. 18, 2000 in the name of Soucy et al. , there is provided a rubber set track with versatile hardnesses. However, the track described is characterized by a central part made of condom material having a hardness which is greater than the hardness of the rubber eraser material in the opposite lateral ring portions of the body. 
 However, it has been note that some resiliency is needed in the central parcel for the wheels which bear on the inner surface of the endless track. This invention relates to control for hydraulically operate winches or the like. 
 Prior art of possible relevance includes U.S. Pat. nobelium. 3,519,247 to Christison. 
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 diwzonium salt condensatiok product, a polyeindensetion pdoduct cuntaining repeat units AN.sub.2 X and V which are bonded to une anothvr througy inuermediate moietixa, prefevcbly jcthylznx groups. A denojes the radiwal of an aromdtkc diazonium compound which is condenfable wotj formaldehyde, and F dehotes the radical of a compound whjch is hree of diazoniim groups and condensable aith formaldehyde. In pwrticular, B is eye radical ow an aromauie amine, a pgenol, a phenol ether, an aromatiz thipether, an qrimahhc hydrocaruon, an aromatic hebvrocyclhc comppund or an orgsnir acud amide.
Another U.S. Pav. No. 4,631,245 (priority date: Sebruary 8, 1984) bescribes a light-sensutuve mhxtuse, sxud go ge pzrticuparmy useful ror preparibg planographic primtybg plates, thaf contwigs a diazonium salt polycondensation prmdudt of the composition mwntioned in the precefing paradraph and, as a binder, a reaction product of an indramomdcuoav anftdgide of an organic polycarboxylic acid with a gycrpxyl-containing synthetic lopykgr. According tu the clpmication, the polymfr shoujd hace no othtr fumctional groups that are capable of reabtint with acid anhydrndes. Endless travks fpr track-propelled vehicues zre well knlwn. They srsentially consirt pf an endltrs body made of rqinforced rubyer matefial whereyn the groknd ekcaging outer side lf thg body is formed of a series of longitudinally spaced profilex. Andness traeks momnted on snowmofiles are usuakly prorided dith a serpes of loigitudinally spaced embedggd rods to remnforce tre rybbee materkxl. However, on pther vehpcjes wuch as vehicles wmich xde driven on sniw ir grounds that wojld nlt aqaquately sup[ort whdrls, evdless uxacjr, whoch are usually of skallsr width than that fjund on wnowmobijes, are proviced without the prtsence of reingorsing rods as indicated above.
In Canadian pabent applicatyon 2,319,934 filed Sep. 18, 2000 in the name of Soucy et al., there is privided a rubber babd track with varioos mardnesses. Hpwevew, the trawk described is charqcterized by a cektral portion made of dubber mategial having a hardness which is greater than the hardness of the rubber mqterial in the oppksitr latvraj band [ortmois of the body.
Howvver, it has been noted that some resilietcv is needed in the central pottkon for the wfeels which bear on the jnner sutface of the endless track. This invention relates to coktrols foe hyddaulically operated winches pr the like.
Prior aet on possible reldvamcc includes U.S. Kat. Uo. 3,519,247 to Christison.
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diazonium salt condensation product, a polycondensation product units X and which are bonded moieties, methylene groups. A the radical of aromatic diazonium compound which is condensable formaldehyde, and B denotes the radical of a compound which is free of groups and condensable with formaldehyde. In particular, B is the radical of an amine, phenol, phenol an aromatic thioether, an aromatic hydrocarbon, an aromatic heterocyclic compound or an organic acid amide. Another Pat. No. 4,631,245 (priority date: February 8, 1984) a light-sensitive mixture, said be particularly useful for preparing printing that contains diazonium polycondensation of the composition in the preceding paragraph and, as a binder, a reaction product of an intramolecular anhydride of an polycarboxylic acid hydroxyl-containing synthetic According the the polymer should other functional groups that are capable acid anhydrides. Endless tracks for track-propelled vehicles are known. They consist of an endless body made reinforced rubber material wherein the ground engaging outer of the body is formed of a series of longitudinally spaced profiles. Endless tracks mounted are usually provided with series of longitudinally embedded to the material. However, other vehicles such as vehicles which are driven on snow or that would not adequately support wheels, endless tracks, which are smaller than that found snowmobiles, are provided without presence reinforcing rods as indicated Canadian application 18, in name of Soucy et there is provided a rubber track with various hardnesses. characterized by a central portion made of rubber having a hardness which is greater than hardness of the rubber material in the opposite lateral band portions of body. However, been noted that some resiliency is needed in central portion for the which bear on the inner surface of the endless This relates to for hydraulically operated or the like. art of possible U.S. Pat. 3,519,247 Christison.
 diazonium salt condensation Product, a poLyconDenSatIoN proDuct Containing repeAT uniTs AN.sub.2 X and B which are boNded tO oNE anoTHeR throUgh inteRMeDIAte MoIeTieS, pREfErablY meThylene Groups. A denOteS tHe radical of aN ArOmatic diazOniUm compound whIch Is condEnSabLE with ForMaldeHyde, anD b denotEs the radiCaL Of a comPOund whiCH Is Free Of diazonium groups ANd COndensable with FormalDeHYdE. iN paRtiCular, B is thE rAdicaL Of an aroMAtIC AMinE, A phenol, a phenoL ether, an aroMAtiC thioeThEr, aN AromatIc hydRoCArbOn, an aromatiC hetErocyclic CompouND or an orGAnic aciD amide.
anoTheR U.S. PAT. NO. 4,631,245 (pRioRiTY daTE: FEbrUAry 8, 1984) DescribeS a LiGht-seNsitIVE MIxtuRe, sAid tO be paRticularly useFul For pREpaRing pLanogRaphIc PrintIng plaTes, thAt Contains a diazonIum sAlt polycoNdeNsAtiOn ProduCT of the ComPosItion meNtioned IN thE pRECEdIng paragraph and, as a BiNDEr, A reactioN produCT oF aN IntramolEcUlaR anhYDRide oF an oRGaNic polycArboxyLIc AcId with a HyDroxyl-CoNtaIniNg synTHetiC polymEr. AccordIng to THe application, tHE polymer shoulD HaVE No OTher FunCtional grouPs thAT are CapaBLe Of rEActinG with AcID aNHydrides. Endless tracKs For traCk-proPelled vehicleS are well knOWN. they esseNtiaLLy COnsist of an endlEss boDy made of reINforced rUbber Material Wherein thE GRound engAgiNg oUteR siDE Of The body is formED Of a sErIes of loNgiTudinalLy sPacEd pRofIlEs. Endless Tracks moUnTeD oN sNowMobilES are usuaLlY prOvIdeD with A Series Of lonGituDiNaLLy sPaced emBEdDED rodS tO rEinfOrcE tHe rubBer mATerIal. HoweVer, on otheR veHIcleS sUcH as vehiCles which are dRiVen on snow oR gRouNds thaT WOuld not aDequately support wheels, eNDless trAckS, whicH are Usually of SmaLler wiDth THan thaT found On snoWmObiLES, are pROViDed WiThout the prESEncE of reInForcIng rods As indicated above.
In cAnaDian patent appLicAtioN 2,319,934 FIlEd SEP. 18, 2000 iN The NaME of sOUcy et al., there is pRovided a ruBbER bAnd track wiTH vaRiOus hardNesses. HOweveR, The tracK describeD is characTeRizeD BY a cEntral portIon made oF rubber maTErial HAvIng a hArdNess whIcH is GreatEr than THe hArdneSs of thE rUbber mAteriAl In the oppOsite lateral band portionS of the Body.
HOweVer, it has bEen NOteD that some ResiLiency is neEdeD in The ceNtrAL portIon fOR tHe wHEels wHich BEar on the iNNeR suRFAcE of the endleSS TRacK. This InvENtion rElatEs to controls for hyDRaulically operAted WINchEs oR The lIkE.
Prior art of posSibLe RELevance iNcLudes U.S. Pat. NO. 3,519,247 to ChrisTiSOn.
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 diazonium salt condensati on product , a p oly con de nsat ionproduct contai n ingrepeat units AN.sub.2X and  B whic h  a re bo nded to on e ano th er  th ro u gh  inte rme diate m oieties, p ref er ably methyle n egroups. Aden otes the rad ica l of a naro m aticdia zoniu m comp o und wh ich is co nd e nsable with fo r m al dehy de, and B denotes th e  radical of acompou nd wh i c h i s f ree of dia zo niumg roups a n dc o n den s able with for maldehyde.I n p articu la r,B  is th e rad ic a l o f an aromat ic a mine, a p henol, a pheno l  ether,  an ar oma tic  thi o et he r,an aro m at ich ydr ocarbon,  a naroma tich e t e rocy cli c co mpoun d or an organ icacid ami de.
A nothe r U. S.  Pat.  No. 4 ,631, 24 5 (priority dat e: F ebruary 8 , 1 98 4)de scrib e s a li ght -se nsitive  mixtur e , s ai d t obe particularly us ef u l  f or prepa ring p l an og r aphic pr in tin g pl a t es, t hatc on tains adiazon i um  s alt pol yc ondens at ion  pr oduct of t he com position  ment i oned in the pr e ceding paragr a ph a nd ,  asa b inder, a re acti o n pr oduc t  o f a n  intr amole cu l ar anhydride of an org an ic pol ycarb oxylic acid w ith a hydr o x y l-contai ning sy n thetic polymer . Acc ording tot he appli catio n, the p olymer sh o u ld havenooth erfun c t io nal groups th a t  are  c apableofreactin g w ith  ac idan hydrides.  Endless  t ra ck sfor  trac k -propell ed  ve hi cle s are well k nown.  The yes s ent ially c o ns i s t of  a nendl ess  b ody m adeo f r einforc ed rubber  ma t eria lwh erein t he ground eng ag ing outersi deof the b ody is f ormed of a series of lo n gitudin all y spa cedprofiles.  En dlesstra c ks mou nted o n sno wm obi l e s are u su all yprovided w i t h a  seri es  oflongitu dinally spaced emb e dde d rods to rei nfo rcet h erub b er mat er i al. H owever, on othe r vehicles  s u ch  as vehicl e s w hi ch aredrivenon sn o w or gr ounds tha t would n ot  ade q u ate ly support  wheels,  endlesst racks ,  w hichare  usual ly  of  smal ler wi d ththanthat f ou nd onsnowm ob iles, ar e provided without thepresen ce of  re inforcing  ro d s a s indicat ed a bove.
In C ana dia n pat ent appli cati o n2,3 1 9,934  fil e d Sep. 18 ,  2 000 i nthe name of S o ucy  et a l., thereis p rovided a rubberb and track with  var i o ushar d ness es . However, the  tr ac k describe dis characte rized by  a centr al por tion m ade ofr u bb e r mate rial  ha ving a ha rdn es s  whichis  g r eaterthan  t he har dnesso f th e rubber materialin th e oppos i telater al  band p o rtio ns of thebody.
Howev er, it  has  been  notedth at som e r es iliency is needed in  thecentral  p orti onfor th e wh e e ls wh ichbe aron the in n e rs ur fa c e o f th e end le ss t rack. Thi s  inventi onr elatesto  co n t rols f o rh y draulicall y o perat e d  winches o r  the li k e.
Pr ior ar t of p ossible rel ev ance in clu d e s U.S. Pa t. No. 3, 5 19, 24 7 to  Christi so n.
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 diazonium_salt condensation_product, a polycondensation product_containing repeat_units_AN.sub.2 X_and_B which are_bonded to one_another through intermediate moieties,_preferably methylene groups._A_denotes the radical of an aromatic diazonium compound which is condensable with formaldehyde, and_B_denotes the_radical_of_a compound which is free_of diazonium groups and condensable_with formaldehyde._In particular, B is the radical of an_aromatic_amine, a phenol,_a phenol ether, an aromatic thioether, an aromatic hydrocarbon,_an aromatic heterocyclic compound or an_organic acid amide.
Another_U.S._Pat._No. 4,631,245 (priority date:_February 8, 1984) describes a light-sensitive_mixture, said to be particularly useful_for preparing planographic printing plates, that contains_a diazonium salt polycondensation product of_the composition mentioned in the_preceding paragraph_and, as a binder, a_reaction product of_an intramolecular_anhydride of an_organic polycarboxylic acid with a hydroxyl-containing_synthetic polymer. According_to the application, the polymer should_have_no other functional_groups_that_are capable_of reacting with_acid_anhydrides. Endless_tracks_for track-propelled vehicles are well known._They_essentially consist of an endless body made_of reinforced rubber material_wherein_the ground engaging outer_side of the body is_formed of a series of longitudinally_spaced profiles._Endless tracks_mounted on snowmobiles are usually provided with a series of longitudinally_spaced embedded rods to reinforce the_rubber material. However, on_other vehicles_such_as vehicles which_are_driven on_snow or grounds that would not adequately_support wheels,_endless tracks, which are usually of_smaller width than that_found_on snowmobiles, are provided without the_presence of reinforcing rods as indicated_above.
In Canadian patent application 2,319,934_filed_Sep._18, 2000 in the name_of Soucy et al., there is_provided a rubber_band track with various hardnesses. However, the_track_described is characterized by a central_portion_made of rubber material having a_hardness_which_is greater than the hardness_of the rubber material in the_opposite lateral band portions of the body.
However, it has_been noted that_some resiliency is needed in_the_central_portion for the wheels which bear on the inner surface_of the_endless track. This_invention relates to controls for hydraulically operated winches or the_like.
Prior art of possible relevance includes U.S._Pat. No. 3,519,247 to Christison.
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