US3921764A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Self-energizing bicycle brake
Assignee: Individual
•
Filing: 1973-07-25
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Granted: 1975-11-25
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Expires: 1993-07-25
Abstract
Abstract A self-energizing bicycle brake, comprising a mounting yoke to mount the brake to a bicycle frame adjacent a wheel rim of the bicycle, brake block support arms connected to the yoke on opposite sides of a wheel of the bicycle and movable both toward the wheel and in the direction of travel of the wheel, brake blocks carried by the arms on opposite sides of the wheel and movable with the arms toward the wheel and into engagement with the rim of the wheel, so that upon engagement of the brake blocks with the wheel rim, the frictional drag between the brake blocks and wheel rim energizes the brake blocks into more firm engagement with the wheel rim, and an actuator connected with the brake blocks to actuate the brake blocks into engagement with the wheel rim.
Inventors
- 👤 William R Mathauser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 21:23
CPC Classifications
B; B62; B62L; B62L1/00; B62L1/02; B62L1/06; B62L1/10; B62L1/14; B62L1/16; F; F16; F16D; F16D65/00; F16D65/78; F16D2065/789
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
257 words
A self-energizing bicycle brake, comprising a substantially inverted U-shaped mounting yoke connected to the frame of a bicycle and extending at its opposite ends on opposite sides of a rim of a wheel of the bicycle, a first brake block adjustment and support means on each end of the yoke for adjustment in a first direction substantially parallel to the plane of the wheel, said first adjustment and support means comprising an elongate slot in each end of the yoke extending substantially parallel to the plane of the wheel and a first pin extended through said slot for movement therealong, said first pin having an opening extending transversely therethrough, a second brake block adjustment and support means adjustably mounted to said pin for adjustment in a second direction substantially perpendicular to the plane of the wheel, said second adjustment and support means including a second elongate adjustment pin extended through the hole in the first pin for movement toward and away from the wheel, means for securing the second pin in adjusted position relative to the first pin, brake block means carried by said second pin for adjustment thereof in said first and second directions and for movement toward and away from the wheel rim into and out of braking engagement with the wheel rim, and actuating means connected with the brake block means to actuate the brake block means both in a direction toward the wheel and in the direction of travel of the wheel, whereby said brake is self-energizing upon engagement with the wheel rim.
Claim 2
Dependent Claim
257 words
A self-energizing bicycle brake, comprising a substantially inverted U-shaped mounting yoke connected to the frame of a bicycle and extending at its opposite ends on opposite sides of a rim of a wheel of the bicycle, a first brake block adjustment and support means on each end of the yoke for adjustment in a first direction substantially parallel to the plane of the wheel, said first adjustment and support means comprising an elongate slot in each end of the yoke extending substantially parallel to the plane of the wheel and a first pin extended through said slot for movement therealong, said first pin having an opening extending transversely therethrough, a second brake block adjustment and support means adjustably mounted to said pin for adjustment in a second direction substantially perpendicular to the plane of the wheel, said second adjustment and support means including a second elongate adjustment pin extended through the hole in the first pin for movement toward and away from the wheel, means for securing the second pin in adjusted position relative to the first pin, brake block means carried by said second pin for adjustment thereof in said first and second directions and for movement toward and away from the wheel rim into and out of braking engagement with the wheel rim, and actuating means connected with the brake block means to actuate the brake block means both in a direction toward the wheel and in the direction of travel of the wheel, whereby said brake is self-energizing upon engagement with the wheel rim.
Claim 3
Dependent Claim
48 words
A self-energizing bicycle brake as in claim 1, wherein said bicycle includes rear frame stays supporting a rear wheel and front forks supporting A front wheel, and a mounting yoke secured to said frame stays and to said front forks associated with a respective front or rear wheel.
Claim 4
Dependent Claim
75 words
A self-energizing bicycle brake as in claim 2, wherein said mounting yokes are secured to the rear of said frame stays and front forks, respectively, and said mounting yokes are operatively engaged with said rear frame stays and front forks, respectively, so that the braking force exerted on the bicycle brake is transmitted directly to the rear frame stays and front forks, enabling the use of lightweight components in the construction of said bicycle brake.
Claim 5
Dependent Claim
129 words
A self-energizing bicycle brake as in claim 1, wherein said first pin comprises a take-up pin having a bore therethrough extending substantially perpendicular to the plane of the wheel, said second pin comprises an elongate adjustment pin slidably received through said bore and extending substantially perpendicular to the plane of the wheel for adjustment toward and away from the wheel to adjust the brake and accomodate different size wheel rims, means to secure said adjustment pin in different adjusted positions, and movable support arm means connected between said adjustment pin and said brake block for movement of said brake block means toward the wheel rim to brake the bicycle when said actuating means is energized and to enable adjustment of said brake block means relative to said wheel rim.
Claim 6
Dependent Claim
116 words
A self-energizing bicycle brake as in claim 4, wherein said means to secure said take-up pin and said adjustment pin in different adjusted positions comprises a threaded extension on said take-up pin received through said slot in said yoke, a nut threaded on said threaded extension and against said yoke urging said take-up pin toward said yoke, and a jam sleeve received over said take-up pin on the side of said yoke opposite said nut, said jam sleeve engaged against the side of said adjustment pin and said yoke to secure said take-up pin in adjusted position in said slot and to secure said adjustment pin in adjusted positions in said bore in said take-up pin.
Claim 7
Dependent Claim
63 words
A self-energizing bicycle brake as in claim 1, wherein said brake block means comprises a substantially rectangularly shaped brake block, a substantially rectangularly shaped brake pad carried by said brake block, and said adjustment and support means is operatively connected between said yoke and said brake block to support the brake block and brake pad substantially parallel to the plane of the wheel.
Claim 8
Dependent Claim
200 words
A self-energizing bicycle brake as in claim 1, wherein said bicycle comprises a frame including front wheel forks and rear frame stays operatively supporting front and rear wheels, respectively, and a mounting yoke secured to each of the rear of the front forks and to the rear of the frame stays, said mounting yokes each having opposite legs extending downwardly on opposite sides of an associated front and rear wheel, said first pin comprising a take-up pin supported on each leg, and each take-up pin having a threaded extension on one end thereof extended through said slot and having a bore through the other end thereof extending substantially perpendicular to the plane of the wheel, said second pin comprising an elongate adjustment pin slidably received in said bore and extending substantially perpendicular to the plane of the wheel, a jam sleeve on said take-up pin between said adjustment pin and said yoke, and a nut threaded on said extension on the side of said yoke opposite said jam sleeve and urging said take-up pin toward said yoke to jam said jam sleeve against said yoke and said adjustment pin to secure said adjustment pin in adjusted positions in said bore.
Claim 9
Dependent Claim
106 words
A self-energizing bicycle brake as in claim 7, wherein said brake block means comprises an elongate, substantially rectangular brake block, a substantially rectangular brake shoe carried by said brake block for engagement with the rim of the wheel, support arm means connected at one end thereof to one end of the brake block and pivotallY connected at the other end thereof to the end of said adjustment pin adjacent said wheel, an hydraulic brake block actuating means pivotally connected at one end thereof to the other end of the brake block and pivotally connected at its other end to the other end of said adjustment pin.
Claim 10
Dependent Claim
144 words
A self-energizing bicycle brake as in claim 7, wherein an elongate support bar is connected at one end thereof to the end of said adjustment pin remote from said wheel and said bar extends substantially parallel to the plane of the wheel, a pair of substantially parallel support arms pivotally connected at one of their ends to the bar adjacent opposite ends of the bar said brake block means including a brake block and a brake shoe carried by said brake block, the other ends of said arms pivotally connected to said brake block adjacent opposite ends of the brake block and supporting said brake block substantially parallel to the plane of the wheel, said bar, said arms and said brake block defining a parallelogram linkage, and said actuating means is connected to said brake block to move said brake block toward the wheel.
Claim 11
Dependent Claim
51 words
A self-energizing bicycle brake as in claim 9, wherein said actuating means comprises a hydraulic piston and cylinder connected at one end thereof to the other end of said bar and connected at the other end thereof to the pivotal connection of the brake block with one of said support arms.
Claim 12
Dependent Claim
32 words
A self-energizing bicycle brake as in claim 9, wherein said actuating means comprises a cable connected at one end thereof to said brake block to pull said brake block toward said wheel.
Claim 13
Dependent Claim
140 words
A self-energizing bicycle brake as in claim 7, wherein an elongate support rail is connected at one end thereof to the end of said adjustment pin adjacent said wheel and extends angularly outwardly from said wheel at its other end, a pair of brake block support arm means extend substantially perpendicular from said brake block means adjacent opposite ends of said brake block means, said support arm means slidably engaged on said rail to support said brake block means for sliding movement along said rail and toward and away from said wheel, and a hydraulic piston and cylinder is connected at one end thereof to the other end of said rail and is connected at its other end to one of said support arm means to actuate said brake block means along said rail toward and away from said wheel.
Claim 14
Dependent Claim
121 words
A self-energizing bicycle brake as in claim 1, wherein said mounting yoke has opposite depending legs extending on opposite sides of the wheel, said first pin comprises an adjustment pin supported on the yoke and extending substantially perpendicularly to the plane of the wheel, said brake block means comprises a brake block and a brake shoe carried by the brake block, said brake block pivotally supported at one end thereof to the end of said adjustment pin adjacent said wheel, and hydraulic piston and cylinder means connected at one end thereof to the other end of said adjustment pin and connected at its other end to the other end of said brake block to energize said brake block toward said wheel.
Claim 15
Dependent Claim
169 words
A self-energizing bicycle brake as in claim 1, wherein said mounting yoke has opposite, depending legs extending downwardly on opposite sides of the wheel, said first pin comprises an elongate adjustment pin adjustably carried by the legs of the yoke on opposite sides of the wheel and extending substantially perpendicularly to the plane of the wheel, an elongate support bar secured at one end thereof to the end of said adjustment pin remote from said wheel, a pair of parallel support arms pivotally connected at one of their ends to said support bar adjacent opposite ends of the support bar, said brake block means comprising a brake block and a brake shoe carried by the brake block, said support arms pivotally connected at their other ends to said brake block adjacent opposite ends of the brake block, said support bar, said support arms and said brake block defining a parallelogram type linkage, and aCtuating means connected to said brake block to actuate said brake block toward said wheel rim.
Claim 16
Dependent Claim
44 words
A self-energizing bicycle brake as in claim 14 wherein said actuating means comprises a hydraulic piston and cylinder assembly connected at one end thereof to an extended end portion of said support bar and connected at the other end thereof to said brake block.
Claim 17
Dependent Claim
29 words
A self-energizing bicycle brake as in claim 14, wherein said actuating means comprises a cable connected to said brake block to pull said brake block toward said wheel rim.
Claim 18
Dependent Claim
194 words
A self-energizing bicycle brake as in claim 1, wherein said mounting yoke has opposite, depending legs extending on opposite sides of a wheel, said first pin comprises an elongate adjustment pin adjustably carried by the legs of the yoke on opposite sides of the wheel and extending substantially perpendicularly to the plane of the wheel, an elongate support rail secured at one end thereof to the end of said adjustment pin adjacent said wheel and extending angularly outwardly from the plane of the wheel at its other end, said brake block means including a brake block and a brake shoe carried by the brake block, a pair of upstanding support arms on said brake block at the opposite ends thereof, said support arms slidably engaged on said support rail to support said brake block for movement along said rail toward and away from the wheel and substantially parallel to the plane of the wheel, and hydraulic piston and cylinder means connected at one end thereof to the other end of said support rail and connected at its other end to one of said support arms to actuate said brake block means toward said wheel.
References Cited (Backward Citations)
US2160181A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-11-24 | 1979-05-26 | 1979-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-11-24 | 1983-05-26 | 1983-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-11-24 | 1987-05-26 | 1987-11-25 | $7700.00 | Window Closed / Lapsed |