US4850245A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bicycle crank and pedal structure
Assignee: Individual
•
Filing: 1987-06-19
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Granted: 1989-07-25
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Expires: 2007-06-19
Abstract
Abstract An extender arm for a bicycle crank arm consists of a generally cylindrical structure suitable for being slidably mounted on the crank arm of the bicycle. The distal end of the extender includes an opening for the mounting of a bicycle pedal. The extender arm contains at least one opening in its side for receipt of a bolt or fastener which will extend through the extender arm and into the opening at the end of the crank arm for receipt of a pedal. In one embodiment, the extender also includes a set screw at the proximal end opposite the distal end on which the pedal is mounted for stabilizing the extender arm on the crank arm.
Inventors
- 👤 Nicholas G. Feamster
- 👤 Robert S. Feamster
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:35
CPC Classifications
B; B62; B62M; B62M3/00; B62M3/02; Y; Y10; Y10T; Y10T74/00; Y10T74/21; Y10T74/2164; Y10T74/2173; Y10T74/2179
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
199 words
An extender for a bicycle crank arm, said crank arm having an opening for receiving a pedal at its distal end, said extender comprising: a tube having an interior opening, the cross-section of which matches in general the cross-section of the bicycle crank arm, wherein the interior opening in said tube is such that said tube is slidable along the longitudinal axis of said bicycle crank arm; a plurality of holes formed through the tube spaced along the longitudinal axis of the tube and perpendicular to the plane of rotation of the bicycle crank arm; means for extending through a selected one of said plurality of holes in said tube and into the opening at the end of the crank arm thereby to attach said tube to said crank arm; said pedal mounted at a distal end of the tube; at least one opening in said tube for receipt of a first set screw, said opening being oriented such that the center line of said first set screw is in the plane of rotation of said crank arm; and an opening for receipt of a second set screw in said tube opposite said opening for said first set screw.
Claim 2
Dependent Claim
199 words
An extender for a bicycle crank arm, said crank arm having an opening for receiving a pedal at its distal end, said extender comprising: a tube having an interior opening, the cross-section of which matches in general the cross-section of the bicycle crank arm, wherein the interior opening in said tube is such that said tube is slidable along the longitudinal axis of said bicycle crank arm; a plurality of holes formed through the tube spaced along the longitudinal axis of the tube and perpendicular to the plane of rotation of the bicycle crank arm; means for extending through a selected one of said plurality of holes in said tube and into the opening at the end of the crank arm thereby to attach said tube to said crank arm; said pedal mounted at a distal end of the tube; at least one opening in said tube for receipt of a first set screw, said opening being oriented such that the center line of said first set screw is in the plane of rotation of said crank arm; and an opening for receipt of a second set screw in said tube opposite said opening for said first set screw.
References Cited (Backward Citations)
US524522A
Cited
US610157A
Cited
US628173A
Cited
GB189814445A
Cited
US1213825A
Cited
DE712288C
Cited
FR876494A
Cited
GB694226A
Cited
US2749771A
Cited
US3922929A
Cited
US4019230A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-07-24 | 1993-01-23 | 1993-07-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-07-24 | 1997-01-23 | 1997-07-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-07-24 | 2001-01-23 | 2001-07-25 | $7700.00 | Window Closed / Lapsed |