Patent US3583534A successfully refreshed from Google Patents.
US3583534A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Brake mechanism for lightweight vehicle
Assignee: Individual
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Filing: 1969-04-24
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Granted: 1971-06-08
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Expires: 1989-04-24
Abstract
Abstract The brake mechanism of a lightweight vehicle, such as a snowmobile, is improved by having a brake band frictionally engaging a drum member rigidly secured on the outside wall of the plates of the driven pulley of the clutch mechanism. The support which carries and operates this brake band serves also to adjust the tension in the power-transmitting chain associated with such vehicle.
Inventors
- 👤 Guy N Chaumont
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 13:43
CPC Classifications
F; F16; F16D; F16D49/00; F16D49/08; F16D49/10; B; B62; B62M; B62M25/00
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
196 words
In a lightweight vehicle including a rotatable axle, a driven centrifugal clutch pulley having a first plate journaled on the axle and a second plate adapted to slide longitudinally on said axle, and a chain assembly mounted at one end of said axle and adapted to transmit driving motion to the vehicle, a brake mechanism comprising: a drum member rigidly secured on the outside wall of said first plate, said drum member being coaxial to the axle; support means having a base portion coaxially mounted on the axle between the drum member and the chain assembly and adapted to allow free rotational movement to the axle therein; drum-engaging means, having a friction surface for engagement with the drum member, being carried by said support means; brake-applying means mounted on said support means and acting between the ends of the drum-engaging means for urging the same toward one another to frictionally engage said friction surface with said drum member; and brake-releasing means acting on said brake-applying means for urging the ends of the drum-engaging means away from one another so as to release the friction surface of said drum-engaging means from its engagement with the drum member.
Claim 2
Dependent Claim
196 words
In a lightweight vehicle including a rotatable axle, a driven centrifugal clutch pulley having a first plate journaled on the axle and a second plate adapted to slide longitudinally on said axle, and a chain assembly mounted at one end of said axle and adapted to transmit driving motion to the vehicle, a brake mechanism comprising: a drum member rigidly secured on the outside wall of said first plate, said drum member being coaxial to the axle; support means having a base portion coaxially mounted on the axle between the drum member and the chain assembly and adapted to allow free rotational movement to the axle therein; drum-engaging means, having a friction surface for engagement with the drum member, being carried by said support means; brake-applying means mounted on said support means and acting between the ends of the drum-engaging means for urging the same toward one another to frictionally engage said friction surface with said drum member; and brake-releasing means acting on said brake-applying means for urging the ends of the drum-engaging means away from one another so as to release the friction surface of said drum-engaging means from its engagement with the drum member.
Claim 3
Dependent Claim
26 words
A brake mechanism as defined in claim 1 wherein said drum-engaging means consists of a brake band, the inner surface of which carries a friction surface.
Claim 4
Dependent Claim
49 words
A brake mechanism as defined in claim 2 wherein said brake-applying means consist of a lever arm pivotably mounted on said support means and force-transmitting means secured at each end of said lever arm for moving said brake band from rest position into frictional engagement with the drum member.
Claim 5
Dependent Claim
68 words
A brake mechanism as defined in claim 3 wherein the force-transmitting means at one end of said lever arm connects said one end of said lever arm to one end of said brake band and wherein the force-transmitting means at the other end of said lever arm connects said other end of said lever arm to a brake wire operable when actuated by the driver of the vehicle.
Claim 6
Dependent Claim
38 words
A brake mechanism as defined in claim 4 wherein said brake-releasing means consists of a spring coaxially mounted on said brake wire and urging said other end of said lever arm to return to its original rest position.
Claim 7
Dependent Claim
66 words
A brake mechanism as defined in claim 1 wherein said chain assembly includes a case rigidly secured to the chassis of said vehicle and having an aperture therein receiving said axle, a chain and a pair of chain-receiving sprockets positioned in said case, one of said sprockets be fixed on said axle, and further comprising means for relatively positioning said support means on said chain case.
Claim 8
Dependent Claim
72 words
A brake mechanism as defined in claim 6 wherein said positioning means consist of first means pivotably connecting said support means to said case and second means received by said support means for adjusting the relative position of said support means with regard to said case whereby the axle, extending through the aperture of said chain case, is movable therein so as to adjust the tension of said chain on said sprockets.
Claim 9
Dependent Claim
25 words
A brake mechanism as defined in claim 7 wheRein said chain case is provided on the back thereof with means for receiving said second means.
Claim 10
Dependent Claim
192 words
In a lightweight vehicle, in combination: a rotatable axle; a driven centrifugal clutch pulley having a first plate journaled on the axle and a second plate longitudinally slidable on said axle; a chain assembly mounted at one end of said axle and adapted to transmit driving motion to said vehicle; a drum member rigidly secured to the outside wall of said first plate, said drum member being coaxial to said axle; brake support means having a cylindrical housing portion coaxially mounted on said axle and arranged to allow free rotational movement of said axle therein; a brake band having a first end connected to said brake support means and having a second end connected to brake-applying means; said brake-applying means being mounted on said brake support means and acting on said second end of said brake band for urging the same towards the first end thereby to frictionally engage the brake band with the drum; and brake-releasing means mounted on said brake support means for urging the second end of said brake band away from said first end so as to release the brake band from its engagement with the drum member.
Claim 11
Dependent Claim
192 words
In a lightweight vehicle, in combination: a rotatable axle; a driven centrifugal clutch pulley having a first plate journaled on the axle and a second plate longitudinally slidable on said axle; a chain assembly mounted at one end of said axle and adapted to transmit driving motion to said vehicle; a drum member rigidly secured to the outside wall of said first plate, said drum member being coaxial to said axle; brake support means having a cylindrical housing portion coaxially mounted on said axle and arranged to allow free rotational movement of said axle therein; a brake band having a first end connected to said brake support means and having a second end connected to brake-applying means; said brake-applying means being mounted on said brake support means and acting on said second end of said brake band for urging the same towards the first end thereby to frictionally engage the brake band with the drum; and brake-releasing means mounted on said brake support means for urging the second end of said brake band away from said first end so as to release the brake band from its engagement with the drum member.
Claim 12
Dependent Claim
183 words
In a lightweight vehicle, in combination: a rotatable axle; a driven centrifugal clutch pulley mounted adjacent one end of said axle and having a first plate journaled on said axle and a second plate adapted to slide longitudinally on said axle; a chain assembly positioned at the other end of said axle including a chain case, a chain and chain-receiving sprockets, said chain case being affixed to the chassis of said vehicle and having an aperture therethrough to receive said axle, said aperture being shaped so as to enable radial displacement of said axle therein; and brake support and chain-tensioning means coaxially mounted on said axle between said first plate and said chain assembly and including means for adjusting the relative position of said axle in said aperture of said chain case, said brake support and chain-tensioning means further including brake-applying means to frictionally engage the friction surface of a drum-engaging means with a drum member integrally and coaxially mounted on said first plate adjacent said support means, and brake-releasing means to remove said friction surface from its engagement with said drum member.
Claim 13
Dependent Claim
183 words
In a lightweight vehicle, in combination: a rotatable axle; a driven centrifugal clutch pulley mounted adjacent one end of said axle and having a first plate journaled on said axle and a second plate adapted to slide longitudinally on said axle; a chain assembly positioned at the other end of said axle including a chain case, a chain and chain-receiving sprockets, said chain case being affixed to the chassis of said vehicle and having an aperture therethrough to receive said axle, said aperture being shaped so as to enable radial displacement of said axle therein; and brake support and chain-tensioning means coaxially mounted on said axle between said first plate and said chain assembly and including means for adjusting the relative position of said axle in said aperture of said chain case, said brake support and chain-tensioning means further including brake-applying means to frictionally engage the friction surface of a drum-engaging means with a drum member integrally and coaxially mounted on said first plate adjacent said support means, and brake-releasing means to remove said friction surface from its engagement with said drum member.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-06-07 | 1974-12-07 | 1975-06-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-07 | 1978-12-07 | 1979-06-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-07 | 1982-12-07 | 1983-06-08 | $7700.00 | Window Closed / Lapsed |