US3891044A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bicycle propelling means
Assignee: Individual
•
Filing: 1973-11-07
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Granted: 1975-06-24
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Expires: 1993-11-07
Abstract
Abstract A bicycle propelling means employing an electric motor having a cone-shaped driving roller which engages one side of the bicycle tire. A cylindrical, freely-rotating roller engages the opposed side of the tire to assure positive contact between the coneshaped roller and the tire. An increase or decrease in the rate of travel of the bicycle is obtained by shifting the periphery of the cone-shaped roller in a plane common to the side of the tire, thus engaging the tire at varying diameters of the roller; The rate of travel then being directly proportional to the diameter of the cone-shaped roller in contact with the tire.
Inventors
- 👤 Clair L Tiede
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 15:47
CPC Classifications
B; B62; B62M; B62M6/00; B62M6/40; B62M6/75; B62M13/00; B62M13/02; B62M7/00; B62M7/10
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
122 words
In a vehicle having a frame, a wheel supported on an axle on said frame and a tire on said wheel, in combination, a propelling means for said vehicle comprising a power unit on said frame comprising a motor mounted on a support and having a shaft, said support being shiftable relative to said frame in a direction normal to said axle, the axis of said shaft being directed downwardly-convergent toward said wheel and relative to a plane normal to said axle, a cone-shaped roller integral with said shaft and positioned in engagement with said tire, said roller having a degree of taper providing substantially invariable frictional contact pressure with said tire during shifting of said power unit normal to said axle.
Claim 2
Dependent Claim
122 words
In a vehicle having a frame, a wheel supported on an axle on said frame and a tire on said wheel, in combination, a propelling means for said vehicle comprising a power unit on said frame comprising a motor mounted on a support and having a shaft, said support being shiftable relative to said frame in a direction normal to said axle, the axis of said shaft being directed downwardly-convergent toward said wheel and relative to a plane normal to said axle, a cone-shaped roller integral with said shaft and positioned in engagement with said tire, said roller having a degree of taper providing substantially invariable frictional contact pressure with said tire during shifting of said power unit normal to said axle.
Claim 3
Dependent Claim
84 words
In a vehicle as set forth in claim 1, which has an upwardly-positioned control means comprising an upwardly-extending flexible member secured at a first end thereof to said support and trained peripherally about a rotatable control member supported on said frame, said flexible member being then downwardly directed and about a downwardly-positioned idler member secured to said frame, said flexible member than extending upwardly from said idler member and secured integrally to said support at a second point transversely positioned from said first end.
References Cited (Backward Citations)
US1424581A
Cited
US3339659A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-06-23 | 1978-12-23 | 1979-06-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-06-23 | 1982-12-23 | 1983-06-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-06-23 | 1986-12-23 | 1987-06-24 | $7700.00 | Window Closed / Lapsed |