US3338539A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Leveling device
Assignee: Individual
•
Filing: 1965-04-02
•
Granted: 1967-08-29
•
Expires: 1985-04-02
Abstract
No abstract record available.
Inventors
- 👤 Edwin E Foster
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 08:05
CPC Classifications
D; D06; D06F; D06F81/00; D06F81/02; A; A47; A47B; A47B91/00; A47B91/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
93 words
A LEVELING DEVICE IN COMBINATION WITH A SUBSTANTIALLY HORIZONTAL CYLINDRICAL FOOT MEMBER OF A SUPPORT STRUCTURE, SAID DEVICE COMPRISING A CUP HAVING AN INNER CYLINDRICAL SURFACE FITTING OVER AND SNUGLY GRIPPING SAID FOOT MEMBER AND BEING ROTATABLY MOVABLE ABOUT THE HORIZONTAL AXIS OF SAID FOOT MEMBER, AND AN OUTER SPIRAL CAMMING SURFACE ON SAID CUP, AND CAMMING SURFACE HAVING INTEGRAL PROJECTION MEANS AT ITS OPPOSITE ENDS FOR RECEIVING EXTERNAL FORCE FOR ROTATING SAID CUP AND TO THEREBY MOVE SAID CAMMING POSITION INTO A DESIRED ROTATED POSITION FOR EFFECTING LEVELING OF SAID SUPPORT STRUCTURE.
Claim 2
Dependent Claim
93 words
A LEVELING DEVICE IN COMBINATION WITH A SUBSTANTIALLY HORIZONTAL CYLINDRICAL FOOT MEMBER OF A SUPPORT STRUCTURE, SAID DEVICE COMPRISING A CUP HAVING AN INNER CYLINDRICAL SURFACE FITTING OVER AND SNUGLY GRIPPING SAID FOOT MEMBER AND BEING ROTATABLY MOVABLE ABOUT THE HORIZONTAL AXIS OF SAID FOOT MEMBER, AND AN OUTER SPIRAL CAMMING SURFACE ON SAID CUP, AND CAMMING SURFACE HAVING INTEGRAL PROJECTION MEANS AT ITS OPPOSITE ENDS FOR RECEIVING EXTERNAL FORCE FOR ROTATING SAID CUP AND TO THEREBY MOVE SAID CAMMING POSITION INTO A DESIRED ROTATED POSITION FOR EFFECTING LEVELING OF SAID SUPPORT STRUCTURE.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-08-28 | 1971-02-27 | 1971-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-08-28 | 1975-02-27 | 1975-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-08-28 | 1979-02-27 | 1979-08-29 | $7700.00 | Window Closed / Lapsed |