Patent US3643974A successfully refreshed from Google Patents.
US3643974A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bicycle fork extension
Assignee: Individual
•
Filing: 1970-04-03
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Granted: 1972-02-22
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Expires: 1990-04-03
Abstract
Abstract The present invention comprises a dragster rail or bicycle fork extension adapted to either nonmotorized or motorized bicycles, the respective elements of which are stabilized against misplacement by a yoke member.
Inventors
- 👤 Norman T Peate
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 22:24
CPC Classifications
B; B62; B62K; B62K21/00; B62K21/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
104 words
A bicycle dragster component adapted to the front steering wheel, comprising tandem extensions to secure the extant wheel support fork, said extensions being braced in spaced apart relation by a stability brace adjustably engaging the respective extensions at a point which is substantially adjacent the external diameter of the bicycle wheel, and having at the upper end of each said extension an extant preselected fork-receiving portion which is oval in cross section, said portion being adapted to receive the respective extant bicycle fork ends and to secure them against displacement by frictional fit, and having at the opposite end of said extensions wheel-engaging portions.
Claim 2
Dependent Claim
104 words
A bicycle dragster component adapted to the front steering wheel, comprising tandem extensions to secure the extant wheel support fork, said extensions being braced in spaced apart relation by a stability brace adjustably engaging the respective extensions at a point which is substantially adjacent the external diameter of the bicycle wheel, and having at the upper end of each said extension an extant preselected fork-receiving portion which is oval in cross section, said portion being adapted to receive the respective extant bicycle fork ends and to secure them against displacement by frictional fit, and having at the opposite end of said extensions wheel-engaging portions.
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) | 1975-02-21 | 1975-08-23 | 1976-02-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-02-21 | 1979-08-23 | 1980-02-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-02-21 | 1983-08-23 | 1984-02-22 | $7700.00 | Window Closed / Lapsed |