US3664709A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dual wheel adaptor system
Assignee: Individual
•
Filing: 1970-05-06
•
Granted: 1972-05-23
•
Expires: 1990-05-06
Abstract
Abstract A DUAL WHEEL ADAPTOR SYSTEM FOR SINGLE TIRE VEHICLES USES STOCK WHEELS AND FASTENERS TO CLAMP AN OPEN ENDED TORQUE RING BETWEEN THE CONFRONTING RIM PERIPHERIES OF THE DUAL WHEELS ON EACH SIDE OF THE VEHICLE. THE EDGES OF THE TORQUE RING ARE ROUNDED TO INTERFIT WITH THE RADII OF THE ENGAGED PERIPHERIES SO THAT RADIALLY DIRECTED SPRING AND CLAMPING FORCES PRODUCE BOTH FRICTIONAL INTERLOCKING AND CONCENTRIC ALIGNMENT OF THE INNER AND OUTER WHEELS RESULTING IN A UNITARY DRIVE, DUAL WHEEL TRACTION UNIT. AUXILIARY FENDERS ARE ADDED, AS REQUIRED.
Inventors
- 👤 J Barr E Lester
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 15:56
CPC Classifications
B; B60; B60B; B60B11/00; B60B11/02; B60B15/00; B60B15/26
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-05-23 | 1975-11-22 | 1976-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-23 | 1979-11-22 | 1980-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-23 | 1983-11-22 | 1984-05-23 | $7700.00 | Window Closed / Lapsed |