Patent US3857583A successfully refreshed from Google Patents.
US3857583A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Occupant propelled quadracycle
Assignee: Individual
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Filing: 1973-05-18
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Granted: 1974-12-31
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Expires: 1993-05-18
Abstract
Abstract An occupant propelled quadracycle including a frame, a pedal driven steerable front wheel, a pair of outrigger caster wheels supported on the frame and a rear wheel having castering capability with a hand actuated lock to lock the rear wheel in a straight line position aligned with the steerable front wheel at the option of the occupant. The occupant seat is mounted on the frame at a point slightly above the castering wheels.
Inventors
- 👤 H Vanover
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 05:36
CPC Classifications
B; B62; B62K; B62K9/00
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
70 words
A quadracycle comprising a frame, a steerable front wheel mounted in said frame, a generally horizontal plate secured to the rear of said frame, a pair of castering outrigger wheels supporting the opposed side edges of said plate, a rear wheel, means mounting said rear wheel on said plate for castering about a vertical pivot, and means movably mounted on said plate for latching said rear wheel against castering movement.
Claim 2
Dependent Claim
70 words
A quadracycle comprising a frame, a steerable front wheel mounted in said frame, a generally horizontal plate secured to the rear of said frame, a pair of castering outrigger wheels supporting the opposed side edges of said plate, a rear wheel, means mounting said rear wheel on said plate for castering about a vertical pivot, and means movably mounted on said plate for latching said rear wheel against castering movement.
Claim 3
Dependent Claim
33 words
A device as claimed in claim 1 wherein said rear wheel includes a bearing plate having a pair of forks secured thereto and depending therefrom with said rear wheel journalled in said forks.
Claim 4
Dependent Claim
52 words
A device as claimed in claim 2 wherein said means latching said rear wheel against castering movement comprises a generally L-shaped latch bar pivotally mounted on said plate and selectively engageable in a slot in said bearing plate to prevent rotation of said bearing plate and thus castering of said rear wheels.
Claim 5
Dependent Claim
59 words
A device as claimed in claim 2 wherein the means for preventing castering of said rear wheel comprises a U-shaped latch member slidably mounted on said plate for latching engagement with the forks of said rear wheel, and means extending to a hand actuated lever for moving said latching member into and out of latching engagEment with said forks.
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) | 1977-12-30 | 1978-07-01 | 1978-12-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-30 | 1982-07-01 | 1982-12-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-30 | 1986-07-01 | 1986-12-31 | $7700.00 | Window Closed / Lapsed |