US4158397A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Basic cyclecar frame
Assignee: Individual
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Filing: 1978-01-09
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Granted: 1979-06-19
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Expires: 1998-01-09
Abstract
Abstract The invention discloses a vehicle frame to be attached to the frame of a conventional two-wheeled motorcycle whose front wheel and fork have been removed, resulting in a combined structure of considerable integrity which may then be utilized as a basis for the construction of a three-wheeled vehicle commonly known as a cyclecar, said vehicle frame being of sufficiently general configuration to allow the builder considerable latitude in the choice of components necessary for the completion of the cyclecar.
Inventors
- 👤 Richard F. Reynolds
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 04:07
CPC Classifications
B; B62; B62K; B62K5/00; B62K5/02; B62K5/027; B62D; B62D21/00; B62D21/08; B62K13/00; B62K13/04; B62K5/01; B62K5/05; B62K5/06; F; F16; F16B; F16B2200/00; F16B2200/40; F16B2200/403
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
165 words
A cycle car frame adapted to be connected to a motorcycle frame having the front fork removed from the fork neck thereof, said cycle car frame comprising: a main frame section having an upper rear crossmember; a pair of members attached to said crossmember and extending rearwardly therefrom, a space being present between said members adapted to contain said motorcycle frame; means at the rear ends of said members adapted to connect said members to said motorcycle frame; a shaft adapted to be received through said fork neck, means releasibly connected to the top of said shaft adapted to hold said shaft within said fork neck, a horizontal member welded perpendicularly to the lower end of said shaft; means for securing said horizontal member to said crossmember; and a rigid metal plate for bracing said shaft, said plate being connected to said shaft at a point above the level of said fork neck and also connected to one of said crossmember and said horizontal member.
Claim 2
Dependent Claim
165 words
A cycle car frame adapted to be connected to a motorcycle frame having the front fork removed from the fork neck thereof, said cycle car frame comprising: a main frame section having an upper rear crossmember; a pair of members attached to said crossmember and extending rearwardly therefrom, a space being present between said members adapted to contain said motorcycle frame; means at the rear ends of said members adapted to connect said members to said motorcycle frame; a shaft adapted to be received through said fork neck, means releasibly connected to the top of said shaft adapted to hold said shaft within said fork neck, a horizontal member welded perpendicularly to the lower end of said shaft; means for securing said horizontal member to said crossmember; and a rigid metal plate for bracing said shaft, said plate being connected to said shaft at a point above the level of said fork neck and also connected to one of said crossmember and said horizontal member.
Claim 3
Dependent Claim
233 words
A cycle car frame adapted to be connected to a motorcycle frame with the front fork removed from the fork neck thereof, said cycle car frame comprising: two upper and two lower longitudinal members, each of said members forming a longitudinal edge of an elongated, tapered-box-shaped configuration; two rear vertical posts and two front vertical posts interconnecting said upper and lower longitudinal members, each of said vertical posts forming a vertical edge of said box-shaped configuration; an upper front, an upper rear, and a lower rear crossmember interconnecting said longitudinal members, each of said crossmembers forming a lateral edge of said box-shaped configuration; a side diagonal brace extending from the lower end of each of said front vertical posts to the upper end of each of said rear vertical posts; a bottom diagonal brace extending from the forward end of each of said lower longitudinal members to the central portion of said lower rear crossmember; a rear diagonal brace extending from each of the ends of said lower rear crossmember to the central portion of said upper rear crossmember; two parallel horizontal members projecting rearwardly from said upper rear crossmember; a brace extending from the rear end of each of said lower longitudinal members to the rear portion of each of said parallel horizontal members; and means adapted to releasably connect said motorcycle frame in a position between said two parallel horizontal members.
Claim 4
Dependent Claim
233 words
A cycle car frame adapted to be connected to a motorcycle frame with the front fork removed from the fork neck thereof, said cycle car frame comprising: two upper and two lower longitudinal members, each of said members forming a longitudinal edge of an elongated, tapered-box-shaped configuration; two rear vertical posts and two front vertical posts interconnecting said upper and lower longitudinal members, each of said vertical posts forming a vertical edge of said box-shaped configuration; an upper front, an upper rear, and a lower rear crossmember interconnecting said longitudinal members, each of said crossmembers forming a lateral edge of said box-shaped configuration; a side diagonal brace extending from the lower end of each of said front vertical posts to the upper end of each of said rear vertical posts; a bottom diagonal brace extending from the forward end of each of said lower longitudinal members to the central portion of said lower rear crossmember; a rear diagonal brace extending from each of the ends of said lower rear crossmember to the central portion of said upper rear crossmember; two parallel horizontal members projecting rearwardly from said upper rear crossmember; a brace extending from the rear end of each of said lower longitudinal members to the rear portion of each of said parallel horizontal members; and means adapted to releasably connect said motorcycle frame in a position between said two parallel horizontal members.
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) | 1982-06-18 | 1982-12-18 | 1983-06-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-06-18 | 1986-12-18 | 1987-06-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-06-18 | 1990-12-18 | 1991-06-19 | $7700.00 | Window Closed / Lapsed |