US3298459A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tree climbing apparatus
Assignee: Individual
•
Filing: 1964-12-16
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Granted: 1967-01-17
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Expires: 1984-12-16
Abstract
No abstract record available.
Inventors
- 👤 Arvid H Bergsten
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:03
CPC Classifications
A; A63; A63B; A63B27/00; E; E06; E06C; E06C9/00; E06C9/02; E06C9/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
133 words
APPARATUS FOR CLIMBING COMPRISING, IN COMBINATION, A SURFACE TO BE CLIMBED, A PLURALITY OF REMOVABLE STEP MEMBERS CONNECTED IN A STAGGERED VERTICAL RELATIONSHIP TO THE SURFACE, EACH OF THE REMOVABLE STEP MEMBERS BEING CHARACTERIZED BY THE SHAFT PORTION HAVING A SCREW THREAD FORMED THEREON, A CRANK PORTION CONNECTED TO THE SHAFT PORTION AND EXTENDING DOWNWARDLY AND NORMALLY THERETO, AND A STEP PORTION DEFINED BY BENDING THE LOWER END OF THE CRANK PORTION AND EXTENDING NORMAL THERETO AND IN A DIRECTION OPPOSITE TO THAT OF THE SHAFT PORTION, THE STEP PORTION FORMING A HANDLE FOR THE CRANK PORTION AND SERVING AS A STEP, THE SHAFT PORTION BEING THREADED INTO THE SURFACE SUCH THAT THE CRANK PORTION CONTACTS THE SURFACE ALONG ITS EXTENT AND AIDS IN THE SUPPORT OF THE STEP MEMBER ON THE SURFACE.
Claim 2
Dependent Claim
133 words
APPARATUS FOR CLIMBING COMPRISING, IN COMBINATION, A SURFACE TO BE CLIMBED, A PLURALITY OF REMOVABLE STEP MEMBERS CONNECTED IN A STAGGERED VERTICAL RELATIONSHIP TO THE SURFACE, EACH OF THE REMOVABLE STEP MEMBERS BEING CHARACTERIZED BY THE SHAFT PORTION HAVING A SCREW THREAD FORMED THEREON, A CRANK PORTION CONNECTED TO THE SHAFT PORTION AND EXTENDING DOWNWARDLY AND NORMALLY THERETO, AND A STEP PORTION DEFINED BY BENDING THE LOWER END OF THE CRANK PORTION AND EXTENDING NORMAL THERETO AND IN A DIRECTION OPPOSITE TO THAT OF THE SHAFT PORTION, THE STEP PORTION FORMING A HANDLE FOR THE CRANK PORTION AND SERVING AS A STEP, THE SHAFT PORTION BEING THREADED INTO THE SURFACE SUCH THAT THE CRANK PORTION CONTACTS THE SURFACE ALONG ITS EXTENT AND AIDS IN THE SUPPORT OF THE STEP MEMBER ON THE SURFACE.
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) | 1970-01-16 | 1970-07-18 | 1971-01-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-16 | 1974-07-18 | 1975-01-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-16 | 1978-07-18 | 1979-01-17 | $7700.00 | Window Closed / Lapsed |