[특허]Endless track suspension

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Endless track suspension

국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	B62D-055/00
미국특허분류(USC)	180/009.5; 180/009.1; 305/120; 305/131
출원번호	UP-0746082 (2007-05-09)
등록번호	US-7708092 (2010-06-03)
우선권정보	CA-2552119(2006-07-12)
발명자 / 주소	Després, Jean
대리인 / 주소	Ogilvy Renault LLP
인용정보	피인용 횟수 : 26 인용 특허 : 9

초록
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An endless track suspension is comprised of a suspension support beam having an idler wheel assembly connected to a respective one of opposed ends thereof. At least one of the idler wheel assemblies has an endless track binding mechanism. Support wheels are secured to the suspension support beam and project from a lower face thereof. A drive sprocket is secured elevated above the suspension support beam by a support arm. The drive sprocket is secured to a vehicle drive axle by a coupling ring. The drive sprocket, the support wheels and idler wheels constitute an endless track support assembly for supporting an endless track in drivable engagement thereabout. A flexible connection of the drive sprocket support arm and the support wheels absorbs shocks and vibrations transmitted to the vehicle drive axle by the displacement of the endless track over a rough ground surface.

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I claim: 1. An endless track suspension comprising a suspension support beam having idler wheel assemblies connected to a respective one of opposed ends of said suspension support beam, at least one of said idler wheel assemblies having an endless track binding means, support wheels secured to said suspension support beam and projecting from a lower face of said suspension support beam, a drive sprocket secured above said suspension support beam by a support means, coupling means connectable to said drive sprocket for securing the drive sprocket to a vehicle drive axle; said drive sprocket, support wheels and idler wheel assemblies constituting an endless track support assembly for supporting an endless track in drivable engagement thereabout; and flexible suspension means comprising a torsion pivot connection between the suspension support beam and the support means, the torsion pivot connection permitting pivoting movement of the suspension support beam with respect to the support means, and comprising a flexible element limiting torsional displacement relating to said pivoting movement between the suspension support beam and the support means, the flexible element absorbing shocks and vibrations transmitted to said vehicle drive axle caused by the displacement of said endless track over a rough ground surface. 2. The endless track suspension as claimed in claim 1 further comprising a torsional axle connection securing each of said support wheels to said suspension support beam. 3. The endless track suspension as claimed in claim 1 wherein said support means is a support arm, said torsion pivot connection being comprised by a connecting transverse hollow metal sleeve secured to a lower end of said support arm, a connecting metal rod secured to said suspension support beam, and said flexible element comprised by a rubber sleeve vulcanized about a free end portion of said connecting metal rod, said free end portion extending into said transverse hollow metal sleeve with said rubber sleeve vulcanized thereto, said rubber sleeve providing limited torsional displacement of said hollow metal sleeve about said connecting metal rod. 4. The endless track suspension as claimed in claim 1 further comprising a torsion connection for each of said support wheels, said torsion connection having a support sleeve disposed in an axle support bore extending along a transverse axis of said suspension support beam for connecting an axle of an associated one of said support wheels, said support sleeve being vulcanized about an outer surface thereof to said suspension support beam and on an inner surface thereof to a connection portion of said axle. 5. The endless track suspension as claimed in claim 4 wherein each of said support wheels has a ball bearing fitted about a projecting support end of said axle. 6. The endless track suspension as claimed in claim 1 wherein said coupling means comprises an adaptor ring for immovable securement to a connecting end of a vehicle drive axle, said adaptor ring having coupling connecting formations for connection to a connecting hub side wall of said drive sprocket, and a connecting means for securing said drive sprocket to said adaptor ring and providing a connecting shaft for said support means. 7. The endless track suspension as claimed in claim 6 wherein said coupling connecting formations are configured for close fit engagement in coupling cavities formed in said connecting hub side wall. 8. The endless track suspension as claimed in claim 7 wherein said coupling connecting formations further comprise two or more threaded bores in said adaptor ring for receiving connecting bolts extending through connecting bores of said connecting means, said connecting means being a clamping cap fitted about an outer hub side wall of said drive sprocket with said connecting bolts extending through sprocket bores aligned with said threaded bores of said adaptor ring whereby said connecting bolts connect to said adaptor ring with said drive sprocket held captive therebetween. 9. The endless track suspension as claimed in claim 1 wherein said endless track binding means is comprised by a resilient means held captive in a bore of an end wall of said suspension support beam, adjustable compression means displaceably secured to a support axle of said at least one of said idler wheel assemblies and having a plunger head disposed against an outer end of said resilient means to compress or decompress said resilient means by said displaceable securement and an outer engageable end to effect said displaceable securement and support guide means to guidingly support said at least one of said idler wheel assemblies adjacent said end wall of said suspension support beam. 10. The endless track suspension as claimed in claim 9 wherein said adjustable compression means is a bolt having a threaded outer portion threadably engaged in a transverse threaded connection bore formed in said support axle. 11. The endless track suspension as claimed in claim 10 wherein a lock nut is adjustably displaceable along said threaded outer portion of said bolt to adjust compression of said resilient means by modifying projecting length of said plunger head with respect to said support axle and thereby adjust a compression force of said resilient means when said endless track is disposed about said idler wheel assemblies and said drive sprocket. 12. The endless track suspension as claimed in claim 11 wherein said resilient means is a helical spring. 13. The endless track suspension as claimed in claim 9 wherein said support guide means is comprised by a pair of slide arms connected at one end to said support axle and on opposed sides of said adjustable compression means and slidingly received in respective guide channels formed in opposed side walls of said suspension support beam adjacent said end wall thereof. 14. The endless track suspension as claimed in claim 13 wherein said slide arms are elongated straight metal arms of U-shaped cross-section having a flat intermediate wall disposed for sliding friction fit in a respective one of said guide channels, said slide arms preventing said support axle from rocking motion with respect to said end wall of said suspension support beam. 15. The endless track suspension as claimed in claim 1 wherein there is further provided an adjustable slider bar adjustably secured to a lower face of said suspension support beam to adjust spacing between a lower face of said slider bar and an inner surface of said endless track. 16. The endless track suspension as claimed in claim 1 wherein said coupling means is secured to a drive axle of an all-terrain vehicle (ATV) and two of said endless track suspensions are connected at opposed ends of said drive axle to support and displace said ATV on a ground support surface. 17. The endless track suspension as claimed in claim 16 wherein said endless track is an endless rubber belt having a plurality of sprocket engaging holes about a central longitudinal axis thereof and equidistantly spaced apart to receive sprocket teeth of said drive sprocket therein. 18. The endless track suspension as claimed in claim 1 wherein each said idler wheel assembly is comprised by a pair of wheels secured to a respective one of opposed ends of a support axle. 19. The endless track suspension as claimed in claim 18 wherein said support wheels are secured to opposed sides of said suspension support beam.

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Endless track suspension

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이 특허에 인용된 특허 (9)

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Endless track suspension

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이 특허에 인용된 특허 (9)

이 특허를 인용한 특허 피인용횟수: 26

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IPC 상세정보(version : 201201)

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