Patent US2039191A successfully refreshed from Google Patents.
Patent US3174745A successfully refreshed from Google Patents.
US3174745A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid pressure operated vise or clamp
Assignee: Individual
•
Filing: 1962-11-20
•
Granted: 1965-03-23
•
Expires: 1982-11-20
Abstract
No abstract record available.
Inventors
- 👤 Alfred W Schmidt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 13:24
CPC Classifications
B; B23; B23Q; B23Q3/00; B23Q3/02; B23Q3/06; B23Q3/08; B23Q2703/00; B23Q2703/02; B23Q2703/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
177 words
A FLUID PRESSURE OPERATED CLAMP DEVICE COMPRISING A BODY, A FLUID PRESSURE CYLINDER FORMED IN THE BODY AND OPENING THROUGH ONE FACE OF THE BODY, A FLUID PRESSURE INLET COMMUNICATING WITH THE CYLINDER, AN OPENING THROUGH AN OPPOSITE FACE OF THE BODY COMMUNICATING WITH THE CYLINDER, A PISTON OPERABLE IN THE CYLINDER, AN END PLATE SECURED TO THE BODY AND OVERLYING THE OPEN END OF THE CYLINDER, A PISTON ROD EXTENDING THROUGH THE OPENING IN THE OPPOSITE FACE OF THE BODY, A COILED SPRING CONCENTRIC WITH THE AXIS OF THE PISTON ROD AND WITHIN THE CYLINDER TO NORMALLY EXERT A FORCE OF COMPRESSION ON SAID PISTON, A CLAMPING BLOCK CARRIED BY THE PISTON ROD, A BOSS PROJECTING INTO ONE END OF SAID CYLINDER AND TELESCOPICALLY RECEIVING ONE END OF SAID COILED SPRING, AND A RELIEVED AREA ECCENTRIC TO AND COMMUNICATING WITH SAID CYLINDER AND WITH SAID FLUID PRESSURE INLET, A PORTION OF A WALL OF SAID RELIEVED AREA EXTENDING INTO THE PATH OF MOVEMENT OF THE PISTON TO LIMIT ITS MOVEMENT IN THE CYLINDER IN ONE DIRECTION.
Claim 2
Dependent Claim
177 words
A FLUID PRESSURE OPERATED CLAMP DEVICE COMPRISING A BODY, A FLUID PRESSURE CYLINDER FORMED IN THE BODY AND OPENING THROUGH ONE FACE OF THE BODY, A FLUID PRESSURE INLET COMMUNICATING WITH THE CYLINDER, AN OPENING THROUGH AN OPPOSITE FACE OF THE BODY COMMUNICATING WITH THE CYLINDER, A PISTON OPERABLE IN THE CYLINDER, AN END PLATE SECURED TO THE BODY AND OVERLYING THE OPEN END OF THE CYLINDER, A PISTON ROD EXTENDING THROUGH THE OPENING IN THE OPPOSITE FACE OF THE BODY, A COILED SPRING CONCENTRIC WITH THE AXIS OF THE PISTON ROD AND WITHIN THE CYLINDER TO NORMALLY EXERT A FORCE OF COMPRESSION ON SAID PISTON, A CLAMPING BLOCK CARRIED BY THE PISTON ROD, A BOSS PROJECTING INTO ONE END OF SAID CYLINDER AND TELESCOPICALLY RECEIVING ONE END OF SAID COILED SPRING, AND A RELIEVED AREA ECCENTRIC TO AND COMMUNICATING WITH SAID CYLINDER AND WITH SAID FLUID PRESSURE INLET, A PORTION OF A WALL OF SAID RELIEVED AREA EXTENDING INTO THE PATH OF MOVEMENT OF THE PISTON TO LIMIT ITS MOVEMENT IN THE CYLINDER IN ONE DIRECTION.
References Cited (Backward Citations)
US1412170A
Cited
US2533413A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-03-22 | 1968-09-21 | 1969-03-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-03-22 | 1972-09-21 | 1973-03-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-03-22 | 1976-09-21 | 1977-03-23 | $7700.00 | Window Closed / Lapsed |