US3974712A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Auxiliary brake lever
Assignee: PENNSYLVANIA WIRE ROPE CORP
•
Filing: 1975-07-16
•
Granted: 1976-08-17
•
Expires: 1995-07-16
Abstract
Abstract An auxiliary brake lever for actuating the brakes of a bicycle wherein the auxiliary brake lever is operable independently of the main brake lever.
Inventors
- 👤 Alan D. Kaufman
- 👤 Arne M. Reistad, Jr.
- 👤 David J. Wilke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 16:44
CPC Classifications
B; B62; B62L; B62L3/00; B62L3/02; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18888; Y10T74/1892; Y10T74/1896; Y10T74/18984; Y10T74/20; Y10T74/20207; Y10T74/20256; Y10T74/20268; Y10T74/2028; Y10T74/20287; Y10T74/20372; Y10T74/20384; Y10T74/2039
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
97 words
In a caliper-type brake operating system having a main brake lever pivotally connected to a housing, and an auxiliary brake lever wherein the auxiliary brake lever is operable independently of the main brake lever for operating the caliper brake actuating cable, the improvement comprising, said auxiliary brake lever being rotatably mounted on the main brake lever housing, cam means connected between the main brake lever housing and the auxiliary brake lever, whereby upon rotational movement of the auxiliary brake lever, the cam means imparts axial movement to the auxiliary brake lever to thereby actuate the brake cable.
Claim 2
Dependent Claim
97 words
In a caliper-type brake operating system having a main brake lever pivotally connected to a housing, and an auxiliary brake lever wherein the auxiliary brake lever is operable independently of the main brake lever for operating the caliper brake actuating cable, the improvement comprising, said auxiliary brake lever being rotatably mounted on the main brake lever housing, cam means connected between the main brake lever housing and the auxiliary brake lever, whereby upon rotational movement of the auxiliary brake lever, the cam means imparts axial movement to the auxiliary brake lever to thereby actuate the brake cable.
Claim 3
Dependent Claim
45 words
In a caliper-type brake operating system according to claim 1, wherein the cam means comprises a cam surface provided on said main lever housing, and a cam follower surface provided on one end of the auxiliary lever cooperating with the cam surface on the housing.
Claim 4
Dependent Claim
75 words
In a caliper-type brake operating system according to claim 1, wherein the cam means comprises a sleeve extending between the main lever housing and one end of the auxiliary brake lever, a cam surface provided on said sleeve, a hub connected to said one end of the auxiliary brake lever, said hub being rotatably mounted on said sleeve, and a cam follower surface provided on said hub cooperating with the cam surface on the sleeve.
Claim 5
Dependent Claim
46 words
In a caliper-type brake operating system according to claim 3, wherein said sleeve is mounted on said housing, said cam surface being formed on the outer peripheral surface of said sleeve, and said cam follower surface being formed on the inner peripheral surface of the hub.
Claim 6
Dependent Claim
20 words
In a caliper-type brake operating system according to claim 4, wherein the cam and cam follower surfaces have helical configurations.
Claim 7
Dependent Claim
20 words
In a caliper-type brake operating system according to claim 4, wherein the cam and cam follower surfaces have undulating configurations.
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) | 1979-08-17 | 1980-02-16 | 1980-08-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-08-17 | 1984-02-16 | 1984-08-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-08-17 | 1988-02-16 | 1988-08-17 | $7700.00 | Window Closed / Lapsed |