US3628635A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bicycle brake
Assignee: Individual
•
Filing: 1969-11-12
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Granted: 1971-12-21
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Expires: 1989-11-12
Abstract
Abstract The present invention relates to a side-pull bicycle brake mechanism having major and minor arch members wherein it is required to pull upwards on one end of said major arch member by means of a wire in the case a pair of brake shoes are one-sided from the center, and so constructed that a small tensile force can achieve a big brake effect with easy handling by providing simple force magnifying means between the pulling member of said major arch member and said wire, so that said pair of brake shoes can be always actuated and applied equally to the two sides of bicycle rim.
Inventors
- 👤 Kiyokazu Yoshigai
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 20:39
CPC Classifications
B; B62; B62L; B62L1/00; B62L1/02; B62L1/06; B62L1/10; B62L1/12
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
119 words
Side-pull bicycle brake mechanism comprising a major arch member, a minor arch member partially lying beneath a coupling arm portion of said major arch member, and a lever acting as force magnifying means said leveR being movably pivoted between its ends on the lower end of said coupling arm portion wherein the lower end of said lever is connected with an inner wire used as a pulling wire, and a partial side face of the upper end of said lever is contacted on the outer peripheral side face of said minor arch member at all times to apply a magnified braking force to said major and minor arch members when a tensioning force is applied to said inner wire.
Claim 2
Dependent Claim
119 words
Side-pull bicycle brake mechanism comprising a major arch member, a minor arch member partially lying beneath a coupling arm portion of said major arch member, and a lever acting as force magnifying means said leveR being movably pivoted between its ends on the lower end of said coupling arm portion wherein the lower end of said lever is connected with an inner wire used as a pulling wire, and a partial side face of the upper end of said lever is contacted on the outer peripheral side face of said minor arch member at all times to apply a magnified braking force to said major and minor arch members when a tensioning force is applied to said inner wire.
Claim 3
Dependent Claim
124 words
Side-pull bicycle brake mechanism comprising a major arch member, a minor arch member partially lying beneath a coupling arm portion of said major arch member, and a lever acting as force magnifying means, said lever being movably pivoted between its ends to the lower end of said coupling arm portion wherein the lower end of said lever is connected with an inner wire used as a pulling wire, a partial side face of the upper end of said lever is contacted on the outer peripheral side face of said minor arch member at all times, the pivot point of said lever to said coupling arm portion being adjustable for adjusting the movement of said major and minor arch members to compensate for brake wear.
Claim 4
Dependent Claim
124 words
Side-pull bicycle brake mechanism comprising a major arch member, a minor arch member partially lying beneath a coupling arm portion of said major arch member, and a lever acting as force magnifying means, said lever being movably pivoted between its ends to the lower end of said coupling arm portion wherein the lower end of said lever is connected with an inner wire used as a pulling wire, a partial side face of the upper end of said lever is contacted on the outer peripheral side face of said minor arch member at all times, the pivot point of said lever to said coupling arm portion being adjustable for adjusting the movement of said major and minor arch members to compensate for brake wear.
Claim 5
Dependent Claim
28 words
The side-pull bicycle brake mechanism according to claim 1, wherein the partial side face of the upper end of said lever is formed as a camlike curved face.
Claim 6
Dependent Claim
63 words
The side-pull bicycle brake mechanism, according to claim 1, wherein said coupling arm portion is divided into two pieces, one of said pieces extending directly to said lever, said one piece being movably pivoted on the other piece and adapted to be fixed stationary therewith by means of an adjustable screw such to regulate the brake clearance arrestment by adjustment of said screw.
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) | 1974-12-20 | 1975-06-21 | 1975-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-12-20 | 1979-06-21 | 1979-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-12-20 | 1983-06-21 | 1983-12-21 | $7700.00 | Window Closed / Lapsed |