US3089680A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shifting jack
Assignee: Individual
•
Filing: 1960-08-22
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Granted: 1963-05-14
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Expires: 1980-08-22
Abstract
No abstract record available.
Inventors
- 👤 Deve Vagn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 08:26
CPC Classifications
B; B66; B66F; B66F3/00; B66F3/24; F; F16; F16M; F16M7/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
185 words
A SHIFTING JACK COMPRISING A GROUND ENGAGING BASE HAVING A SMOOTH TOP BEARING SURFACE AND AN UPRIGHT FLANGE AT THE PERIMETER THEREOF, AN UPRIGHT HYDRAULIC CYLINDER OPENED AT BOTH ENDS AND HAVING A RADIALLY OUTWARDLY DIRECTED FLANGE AT ITS LOWER END DEFINING A CLYINDRICAL LATERAL WALL PORTION SPACED FROM SAID FLANGE, AND A SMOOTH BOTTOM FACE IN SLIDABLE ENGAGEMENT WITH THE BEARING SURFACE OF SAID BASE, SAID CYLINDER BEING ROTATABLE AND LATERALLY SHIFTABLE IN ALL DIRECTIONS WITH RESPECT TO SAID BASE, A PISTON IN THE FORM OF A CAP HAVING A CYLINDRICAL SKIRT FITTING OVER AND SLIDABLE WITH RESPECT TO THE EXTERNAL SURFACE OF SAID CYLINDER, THE LOWER EDGE OF SAID SKIRT REGISTERING WITH SAID LATERAL FLANGE OF SAID CYLINDER, SAID PISTON VERTICALLY MOVABLE UNDER HYDRAULIC FLUID PRESSURE, MEANS TO SUPPLY HYDRAULIC FLUID UNDER PRESSURE IN THE CAVITY DEFINED BETWEEN SAID CYLINDER AND PISTON, AND RADIALLY DIRECTED SCREW MEANS MOUNTED IN SAID FLANGE AND ENGAGEABLE WITH SAID CYLINDRICAL LATERAL WALL PORTION OF SAID CYLINDER FOR ALLOWING ROTATION OF SAID CYLINDER AND FOR ADJUSTABLE LATERAL SHIFTING AND POSITIONING OF SAID CYLINDER WITH RESPECT TO SAID BASE.
Claim 2
Dependent Claim
185 words
A SHIFTING JACK COMPRISING A GROUND ENGAGING BASE HAVING A SMOOTH TOP BEARING SURFACE AND AN UPRIGHT FLANGE AT THE PERIMETER THEREOF, AN UPRIGHT HYDRAULIC CYLINDER OPENED AT BOTH ENDS AND HAVING A RADIALLY OUTWARDLY DIRECTED FLANGE AT ITS LOWER END DEFINING A CLYINDRICAL LATERAL WALL PORTION SPACED FROM SAID FLANGE, AND A SMOOTH BOTTOM FACE IN SLIDABLE ENGAGEMENT WITH THE BEARING SURFACE OF SAID BASE, SAID CYLINDER BEING ROTATABLE AND LATERALLY SHIFTABLE IN ALL DIRECTIONS WITH RESPECT TO SAID BASE, A PISTON IN THE FORM OF A CAP HAVING A CYLINDRICAL SKIRT FITTING OVER AND SLIDABLE WITH RESPECT TO THE EXTERNAL SURFACE OF SAID CYLINDER, THE LOWER EDGE OF SAID SKIRT REGISTERING WITH SAID LATERAL FLANGE OF SAID CYLINDER, SAID PISTON VERTICALLY MOVABLE UNDER HYDRAULIC FLUID PRESSURE, MEANS TO SUPPLY HYDRAULIC FLUID UNDER PRESSURE IN THE CAVITY DEFINED BETWEEN SAID CYLINDER AND PISTON, AND RADIALLY DIRECTED SCREW MEANS MOUNTED IN SAID FLANGE AND ENGAGEABLE WITH SAID CYLINDRICAL LATERAL WALL PORTION OF SAID CYLINDER FOR ALLOWING ROTATION OF SAID CYLINDER AND FOR ADJUSTABLE LATERAL SHIFTING AND POSITIONING OF SAID CYLINDER WITH RESPECT TO SAID BASE.
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) | 1966-05-13 | 1966-11-12 | 1967-05-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-05-13 | 1970-11-12 | 1971-05-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-05-13 | 1974-11-12 | 1975-05-14 | $7700.00 | Window Closed / Lapsed |