US3701543A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drive mechanism for wheeled vehicle
Assignee: Individual
•
Filing: 1970-09-21
•
Granted: 1972-10-31
•
Expires: 1990-09-21
Abstract
Abstract Drive mechanism for occupant propelled wheeled vehicle including an occupant actuated pivotal lever drivingly connected by a crank mechanism to a pair of overrunning clutches carried on the driving sprocket shaft. The clutches are arranged to drive the shaft in the same direction but through angularly spaced limited driving arcs.
Inventors
- 👤 Wallace Clark
- 👤 Reginald A Jones
- 👤 James L Teeters
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 21:59
CPC Classifications
B; B62; B62M; B62M1/00; B62M1/14
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
188 words
An auxiliary drive mechanism for a bicycle comprising: a. a rotatable driving shaft operatively associated with at least one wheel of said bicycle; b. a pair of over-running clutches carried by said shaft, said clutches being effective to drive said shaft in one direction and to permit free rotation of said shaft relative thereto in the same direction; c. power means for driving one of said clutches through an arcuate travel of less than 180*; and d. power means for driving the other of said clutches in the same direction through an arcuate travel of less than 180*, the driving arc of said other clutch being annularly spaced from the driving arc of said first mentioned clutch, whereby at least one of said clutches will be over-running at all times the bicycle is in motion, said power means for driving said clutches including i. a pair of bell cranks jourNaled for limited pivotal motion about an axis parallel to said shaft; ii. a crank arm operatively associated with each said clutch; and iii. a connecting rod extending from each said bell crank to one of said crank arms.
Claim 2
Dependent Claim
188 words
An auxiliary drive mechanism for a bicycle comprising: a. a rotatable driving shaft operatively associated with at least one wheel of said bicycle; b. a pair of over-running clutches carried by said shaft, said clutches being effective to drive said shaft in one direction and to permit free rotation of said shaft relative thereto in the same direction; c. power means for driving one of said clutches through an arcuate travel of less than 180*; and d. power means for driving the other of said clutches in the same direction through an arcuate travel of less than 180*, the driving arc of said other clutch being annularly spaced from the driving arc of said first mentioned clutch, whereby at least one of said clutches will be over-running at all times the bicycle is in motion, said power means for driving said clutches including i. a pair of bell cranks jourNaled for limited pivotal motion about an axis parallel to said shaft; ii. a crank arm operatively associated with each said clutch; and iii. a connecting rod extending from each said bell crank to one of said crank arms.
Claim 3
Dependent Claim
59 words
The improved drive mechanism claimed in claim 1 wherein the driving arcs of said overrunning clutches are oppositely disposed, whereby pivotal motion of said bell cranks in one direction will be effective to drive one of said clutches and pivotal motion of said bell cranks in the opposite direction will be effective to drive the other of said clutches.
References Cited (Backward Citations)
BE543761A
Cited
US498394A
Cited
US628426A
Cited
US667171A
Cited
US1032455A
Cited
CH173599A
Cited
FR1075855A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-10-31 | 1976-05-01 | 1976-10-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-31 | 1980-05-01 | 1980-10-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-31 | 1984-05-01 | 1984-10-31 | $7700.00 | Window Closed / Lapsed |