US3561778A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Three wheeled vehicle
Assignee: Individual
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Filing: 1968-03-06
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Granted: 1971-02-09
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Expires: 1988-03-06
Abstract
Abstract A novel tricycle having a rear wheel which is pedal and chain driven, the front end of the vehicle having a pair of parallel forks to carry the front wheels which are steerable by a handlebar''s upper portion. The front wheels of this tricycle are of such construction as to allow the rider when stopped to maintain balance without removing his feet from the pedals. This vehicle also allows the rider to bank into a turn and provide maximum safety for the rider at higher speeds which cannot be attained with the conventional tricycle-type of vehicle.
Inventors
- 👤 Edward G La Brie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 06:44
CPC Classifications
B; B62; B62K; B62K5/00; B62K5/02; B62K5/05; B62K5/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
278 words
A three wheeled vehicle, comprising in combination, a tubular frame mounted at its rear end upon a drive wheel, a pair of rotatable pedals supported on said frame, said drive wheel being secured on a drive shaft having a sprocket secured thereto, said pedals being rotatable about a shaft having a second sprocket secured thereto, an endless chain passed around said sprockets, an adjustable seat mounted upon said frame, said frame including a forwardly extending bar secured at its forward end to a plate, a pair of transverse extending tubes being centrally mounted pivotably free on said plate, said tubes being parallel to each other and spaced apart, the opposite ends of said tubes being attached pivotably free to a pair of vertically extending forks each having a lower portion thereof bifurcated and supporting an axle upon which a freely rotatable front wheel is mounted, an upper portion of each said fork extending upwardly and having a rearward extending terminal portion with a hand grip secured thereto, each said upward extending portion of said forks having a forward extension secured thereto which has a ball and socket joint at a forward end that is attached pivotably to opposite ends of a transverse horizontal tie rod, and a pair of spaced apart braces attached pivotably at their ends to one of said tubes, the free ends of each of said braces being selectively engageable on pins mounted on the other said tube, and said front wheels being selectively interchangeable by skiis for travel on ice or snow, and an elastic pull cord being secured to a forward end of said skiis to raise the same over a bump surface.
Claim 2
Dependent Claim
278 words
A three wheeled vehicle, comprising in combination, a tubular frame mounted at its rear end upon a drive wheel, a pair of rotatable pedals supported on said frame, said drive wheel being secured on a drive shaft having a sprocket secured thereto, said pedals being rotatable about a shaft having a second sprocket secured thereto, an endless chain passed around said sprockets, an adjustable seat mounted upon said frame, said frame including a forwardly extending bar secured at its forward end to a plate, a pair of transverse extending tubes being centrally mounted pivotably free on said plate, said tubes being parallel to each other and spaced apart, the opposite ends of said tubes being attached pivotably free to a pair of vertically extending forks each having a lower portion thereof bifurcated and supporting an axle upon which a freely rotatable front wheel is mounted, an upper portion of each said fork extending upwardly and having a rearward extending terminal portion with a hand grip secured thereto, each said upward extending portion of said forks having a forward extension secured thereto which has a ball and socket joint at a forward end that is attached pivotably to opposite ends of a transverse horizontal tie rod, and a pair of spaced apart braces attached pivotably at their ends to one of said tubes, the free ends of each of said braces being selectively engageable on pins mounted on the other said tube, and said front wheels being selectively interchangeable by skiis for travel on ice or snow, and an elastic pull cord being secured to a forward end of said skiis to raise the same over a bump surface.
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) | 1974-02-08 | 1974-08-10 | 1975-02-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-08 | 1978-08-10 | 1979-02-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-08 | 1982-08-10 | 1983-02-09 | $7700.00 | Window Closed / Lapsed |