Patent US3605927A successfully refreshed from Google Patents.
US3605927A
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Assignee: Individual
•
Filing: 1969-09-17
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Granted: 1971-09-20
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Expires: 1989-09-17
Abstract
Abstract A FRAME TRANSVERSELY JOURNALS SPROCKETS AND WHEELS AROUND WHICH AN ENDLESS TRACK IS ENTRAINED AND ENGAGED BY THE SPROCKETW FOR MOVEMENT OF THE TRACK. ONE OF THE SPROCKETS IS DRIVEN BY A MOTOR MOUNTED ON THE FRAME. MEANS, CONNECTED WITH THE FRAME IN TRAILER-LIKE FASHION, TRANSPORTS THE USER. HANDLE CONTROL MEANS, CONNECTED WITH THE FRAME, PROJECTS REARWARDLY THEREOF TOWARD THE OPERATOR.
Inventors
- 👤 David L Wells
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 15:39
CPC Classifications
B; B62; B62D; B62D55/00; B62D55/02; B62M; B62M27/00; B62M27/02; B62M2027/022
Claims Analysis
Total Claims: 0
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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) | 1974-09-19 | 1975-03-21 | 1975-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-19 | 1979-03-21 | 1979-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-19 | 1983-03-21 | 1983-09-20 | $7700.00 | Window Closed / Lapsed |