Patent US4389055A successfully refreshed from Google Patents.
US4389055A
Expired / Lapsed
US
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Velocipede
Assignee: Acrow Pty Ltd
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Filing: 1980-11-07
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Granted: 1983-06-21
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Expires: 2000-11-07
Abstract
Abstract A velocipede which may be constructed either as a bicycle or a tricycle by attaching the appropriate rear frame to a central unitary frame located in the area of the headstock. As a bicycle front forks protrude downwardly from the headstock and support a front wheel driven by pedal cranks, and rear forks are cantilevered downwardly and rearwardly from the central unitary frame. As a tricycle the rear forks are replaced by a frame supporting two side by side rear wheels. Handle bars protrude upwardly from the headstock and an elongate inclined seat protrudes rearwardly and upwardly from the headstock. The velocipede is simple, compact and may be ridden by riders of different sizes without adjustment.
Inventors
- 👤 Paul A. Cockburn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 16:53
CPC Classifications
B; B62; B62K; B62K3/00; B62K3/02; B62K5/00; B62K5/02; B62K5/06
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
153 words
A velocipede including: a longitudinally elongated central unitary frame having a forward portion providing a headstock and a rear portion extending rearwardly from said forward portion; one or more bearings arranged in the headstock; a spindle rotatably mounted on the headstock so as to be rotatably supported by said bearings for rotation about a generally vertical axis; handle bars attached to the upper end of said spindle, front forks attached to the lower end of said spindle, a front wheel rotatably supported between said front forks and a set of pedal cranks operable on said front wheel; a fixed non-adjustable elongated seat directly supported on said rear portion so as to extend therealong and provide a seating surface extending upwardly and rearwardly from said headstock; a rear frame supported by said central frame and extending downwardly and rearwardly from said headstock; and at least one rear wheel rotatably mounted on said rear frame.
Claim 2
Dependent Claim
153 words
A velocipede including: a longitudinally elongated central unitary frame having a forward portion providing a headstock and a rear portion extending rearwardly from said forward portion; one or more bearings arranged in the headstock; a spindle rotatably mounted on the headstock so as to be rotatably supported by said bearings for rotation about a generally vertical axis; handle bars attached to the upper end of said spindle, front forks attached to the lower end of said spindle, a front wheel rotatably supported between said front forks and a set of pedal cranks operable on said front wheel; a fixed non-adjustable elongated seat directly supported on said rear portion so as to extend therealong and provide a seating surface extending upwardly and rearwardly from said headstock; a rear frame supported by said central frame and extending downwardly and rearwardly from said headstock; and at least one rear wheel rotatably mounted on said rear frame.
Claim 3
Dependent Claim
24 words
A velocipede as claimed in claim 1 wherein said seating surface is inclined at an angle of between 5° and 25° to the horizontal.
Claim 4
Dependent Claim
32 words
A velocipede as claimed in claim 2 wherein said seat is cantilevered rearwardly from said headstock so as to leave a clear open space beneath said seat and above said rear wheel.
Claim 5
Dependent Claim
42 words
A velocipede as claimed in claim 1, 2 or 3 when made in the configuration of a bicycle and wherein said rear frame comprises rear forks protruding downwardly and rearwardly from said headstock having one rear wheel rotatably mounted in said forks.
Claim 6
Dependent Claim
31 words
A velocipede as claimed in claim 4 wherein said rear forks are cantilevered downwardly and rearwardly from said headstock in a substantially straight line intersecting with said spindle of said headstock.
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) | 1986-06-20 | 1986-12-20 | 1987-06-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-06-20 | 1990-12-20 | 1991-06-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-06-20 | 1994-12-20 | 1995-06-21 | $7700.00 | Window Closed / Lapsed |