US3875818A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Brake apparatus for bicycle
Assignee: Yoshigai Kikai Kinzoku KK
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Filing: 1974-06-12
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Granted: 1975-04-08
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Expires: 1994-06-12
Abstract
Abstract A brake apparatus for bicycle having a drop handle including a straight bar portion and bent bar portions mounted on the bent bar portion. The apparatus comprises a clip band for embracing the bent bar portion, a mounting bracket having an opening, a main brake lever pivoted to the bracket and connected to one end of brake wire, and an auxiliary lever disposed at the inner side of the bracket and having portions extending in an L-form in parallel to the bent bar portion and straight bar portion respectively. The auxiliary lever is pivoted at its top on the head portion of the main brake lever and is supported by a link member having one end pivoted on the bracket and the other end pivoted on an intermediate portion of the auxiliary lever. The main brake lever is therefore pivotally movable through a greater angle than the auxiliary lever to minimize the distance the distal end of the auxiliary lever moves, rendering the distal end readily accessible by the rider to assure an easy and quick braking action.
Inventors
- 👤 Kiyokazu Yoshigai
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 11:22
CPC Classifications
B; B62; B62L; B62L3/00; B62L3/02; B62K; B62K23/00; B62K23/02; B62K23/06; Y; Y10; Y10T; Y10T74/00; Y10T74/20; Y10T74/20207; Y10T74/20213
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
238 words
A brake apparatus for a bicycle having a drop handle including a straight bar portion and bent bar portions to be mounted on the bent bar portion comprising a clip band for embracing the bent bar portion having a seat plate, a mounting bracket having an opening, a main brake lever having a head inserted into the bracket from the opening and connected to one end of an actuating wire, and an auxiliary lever disposed at the inner side of the bracket and having portions extending in an L-form in parallel to the bent bar portion and the straight bar portion respectively, the bracket supporting a fastening pin extending therethrough in a transverse direction and having a hole for inserting a screw, the screw extending through the hole and being driven into the seat plate of the clip band to fasten the clip band to the bent bar portion, the main brake lever being supported on the bracket at a position under the fastening pin in front thereof so as to be pivotally movable forward and backward, the auxiliary lever being pivoted at its head to a head portion of the main brake lever and supported at the inner side of the bracket by a link member, the link member being pivotally movable forward and backward and having one end pivoted to the fastening pin and the other end pivoted to an intermediate portion of the auxiliary lever.
Claim 2
Dependent Claim
238 words
A brake apparatus for a bicycle having a drop handle including a straight bar portion and bent bar portions to be mounted on the bent bar portion comprising a clip band for embracing the bent bar portion having a seat plate, a mounting bracket having an opening, a main brake lever having a head inserted into the bracket from the opening and connected to one end of an actuating wire, and an auxiliary lever disposed at the inner side of the bracket and having portions extending in an L-form in parallel to the bent bar portion and the straight bar portion respectively, the bracket supporting a fastening pin extending therethrough in a transverse direction and having a hole for inserting a screw, the screw extending through the hole and being driven into the seat plate of the clip band to fasten the clip band to the bent bar portion, the main brake lever being supported on the bracket at a position under the fastening pin in front thereof so as to be pivotally movable forward and backward, the auxiliary lever being pivoted at its head to a head portion of the main brake lever and supported at the inner side of the bracket by a link member, the link member being pivotally movable forward and backward and having one end pivoted to the fastening pin and the other end pivoted to an intermediate portion of the auxiliary lever.
Claim 3
Dependent Claim
120 words
A brake apparatus for a bicycle having a drop handle including a straight bar portion and bent bar portions said brake apparatus including a mounting bracket; a main brake lever pivotally mounted to said bracket, said main brake lever being connected to a brake cable; an L-shaped auxiliary lever having a first portion parallel to said bent bar portion and a second portion parallel to said straight portion, said first portion being coupled to said main brake lever; and a link member wherein said link member is pivotally mounted to said bracket and said auxiliary lever is pivotally mounted to said link member whereby the rotation of said auxiliary lever causes a proportionally greater rotation of said main brake lever.
Claim 4
Dependent Claim
120 words
A brake apparatus for a bicycle having a drop handle including a straight bar portion and bent bar portions said brake apparatus including a mounting bracket; a main brake lever pivotally mounted to said bracket, said main brake lever being connected to a brake cable; an L-shaped auxiliary lever having a first portion parallel to said bent bar portion and a second portion parallel to said straight portion, said first portion being coupled to said main brake lever; and a link member wherein said link member is pivotally mounted to said bracket and said auxiliary lever is pivotally mounted to said link member whereby the rotation of said auxiliary lever causes a proportionally greater rotation of said main brake lever.
Claim 5
Dependent Claim
21 words
The brake apparatus of claim 2 wherein the first portion of said auxiliary member is mounted pivotally to said link member.
Claim 6
Dependent Claim
30 words
The apparatus of claim 2 including a fastening pin positioned within said bracket and extending therefrom, said link member being mounted on said bracket by means of said fastening pin.
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) | 1978-04-07 | 1978-10-07 | 1979-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-04-07 | 1982-10-07 | 1983-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-04-07 | 1986-10-07 | 1987-04-08 | $7700.00 | Window Closed / Lapsed |