Patent US3588138A successfully refreshed from Google Patents.
US3588138A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Collapsible ski-bob
Assignee: Individual
•
Filing: 1969-01-30
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Granted: 1971-06-28
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Expires: 1989-01-30
Abstract
Abstract A SKI-BOB EMPLOYS A STEERABLE FRONT SKI AND TWO REAR SKIS, EACH SKI BEING SUSPENDED TO PROVIDE BOTH ROCKING AND TILTING MOTION THEREOF. THE REAR SKIS ARE CONNECTED BY A PARALLELOGRAM LINK-TYPE STRUCTURE WHICH IS FASTENED TO THE FRONT STEERING MECHANISM BY TWO INCLINED MEMBERS, ON THE UPPER OF WHICH THE SEAT IS ATTACHED. THROUGH A CLAMP MEMBER AND A PIVOT ATTACHMENT CONNECTED TO THE STEERING COLUMN, ROTATION THEREOF ENABLES THE SKI-BOB TO BE COLLAPSIBLE WHEREBY IT MAY BE EASILY TRANSPORTED.
Inventors
- 👤 Anton Cerny Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 15:41
CPC Classifications
B; B62; B62B; B62B13/00; B62B13/02; B62B13/06; B62B13/08; B62B13/12
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) | 1974-06-27 | 1974-12-27 | 1975-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-27 | 1978-12-27 | 1979-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-27 | 1982-12-27 | 1983-06-28 | $7700.00 | Window Closed / Lapsed |