US3724865A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Convertible bicycle
Assignee: STELBER IND Inc
•
Filing: 1971-02-22
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Granted: 1973-04-03
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Expires: 1991-02-22
Abstract
Abstract A bicycle which can be converted to a boys or girls bicycle design by means of a joiner unit providing for a removable horizontal tube between the seat support area and the head tube of the bicycle. The joiner unit preferably takes the form of a plastic bushing, adapted to receive a removable frame tube, which may be locked in place in the bushing element by means of a screw.
Inventors
- 👤 M Cristie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:36
CPC Classifications
B; B62; B62K; B62K13/00; B62K13/08; Y; Y10; Y10T; Y10T403/00; Y10T403/70; Y10T403/7001; Y10T403/7003; Y10T403/7041
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
120 words
In a bicycle frame having a head tube, a seat support element and a frame tube extending rearwardly from the upper part of said seat support element, means for converting said bicycle frame between a boys and girls design which comprises, joining means fixed to the front end of said frame tube for removably receiving a tube member for extending between said frame tube and the head tube of said bicycle frame, a fixed frame support element extending downwardly from the upper portion of said head tube to said seat support element below said frame tube, said fixed support element being adapted to have the front end of said removable tube member seated thereon when positioned against said head tube.
Claim 2
Dependent Claim
120 words
In a bicycle frame having a head tube, a seat support element and a frame tube extending rearwardly from the upper part of said seat support element, means for converting said bicycle frame between a boys and girls design which comprises, joining means fixed to the front end of said frame tube for removably receiving a tube member for extending between said frame tube and the head tube of said bicycle frame, a fixed frame support element extending downwardly from the upper portion of said head tube to said seat support element below said frame tube, said fixed support element being adapted to have the front end of said removable tube member seated thereon when positioned against said head tube.
Claim 3
Dependent Claim
17 words
The combination of claim 1 which further comprises a tube member removably positioned in said frame tube.
Claim 4
Dependent Claim
28 words
The combination of claim 1 wherein the end of said tube extending against said head tube is curved to fit snugly against said head tube when in place.
Claim 5
Dependent Claim
36 words
The combination of claim 1 wherein said joining means is in the form of a bushing fitted in said frame tube, and adapted to receive a removable tube member of smaller diameter than said frame tube.
Claim 6
Dependent Claim
34 words
The combination of claim 4 wherein said bushing and said frame tube have an aligned channel to receive a screw element for holding said removable tube member in place after insertion in said bushing.
Claim 7
Dependent Claim
33 words
The combination of claim 5, which further comprises a smaller diameter tube member positioned in said bushing and held in place by a screw element, said tube member extending to said head tube.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-04-02 | 1976-10-02 | 1977-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-02 | 1980-10-02 | 1981-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-02 | 1984-10-02 | 1985-04-03 | $7700.00 | Window Closed / Lapsed |