US3131558A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve testing and fixture therefor
Assignee: Ohio Brass Co
•
Filing: 1960-08-22
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Granted: 1964-05-05
•
Expires: 1980-08-22
Abstract
No abstract record available.
Inventors
- 👤 Charles A Davis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 16:29
CPC Classifications
G; G01; G01M; G01M3/00; G01M3/02; G01M3/26; G01M3/28; G01M3/2876
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
128 words
FLUID PRESSURE TESTING APPARATUS HAVING A FIXED JAW AND A COMPRESSIBLY YIELDABLE JAW WITH MEANS FOR MOVING THE YIELDABLE JAW TOWARDS THE FIXED JAW FOR CLOSELY CONTACTING OPPOSITE SIDES OF A HOLLOW OBJECT TO BE HELD, MEANS FOR LOCKING THE YIELDABLE JAW AGAINST COMPRESSION THEREOF FOR FIRMLY SECURING THE OBJECT WITHOUT APPLYING SUBSTANTIAL MECHANICAL PRESSURE THERETO AND TEST PRESSURE MEANS SEPARATE FROM EITHER OF THE FOREGOING MEANS FOR SUBJECTING THE INTERIOR OF THE HOLLOW OBJECT TO FLUID PRESSURE WHILE THE OBJECT IS SO SECURED, SAID LOCKING MEANS COMPRISING HYDRAULIC CYLINDER AND PISTON MEANS CONTAINING AN INCOMPRESSIBLE LIQUID WITH A LIQUID SUPPLY AND ESCAPE CONDUIT AND MEANS COACTING WITH THE TEST PRESSURE MEANS FOR CLOSING THE SUPPLY AND ESCAPE CONDUIT RESPONSIVE TO FLUID PRESSURE OF THE TEST PRESSURE MEANS.
Claim 2
Dependent Claim
128 words
FLUID PRESSURE TESTING APPARATUS HAVING A FIXED JAW AND A COMPRESSIBLY YIELDABLE JAW WITH MEANS FOR MOVING THE YIELDABLE JAW TOWARDS THE FIXED JAW FOR CLOSELY CONTACTING OPPOSITE SIDES OF A HOLLOW OBJECT TO BE HELD, MEANS FOR LOCKING THE YIELDABLE JAW AGAINST COMPRESSION THEREOF FOR FIRMLY SECURING THE OBJECT WITHOUT APPLYING SUBSTANTIAL MECHANICAL PRESSURE THERETO AND TEST PRESSURE MEANS SEPARATE FROM EITHER OF THE FOREGOING MEANS FOR SUBJECTING THE INTERIOR OF THE HOLLOW OBJECT TO FLUID PRESSURE WHILE THE OBJECT IS SO SECURED, SAID LOCKING MEANS COMPRISING HYDRAULIC CYLINDER AND PISTON MEANS CONTAINING AN INCOMPRESSIBLE LIQUID WITH A LIQUID SUPPLY AND ESCAPE CONDUIT AND MEANS COACTING WITH THE TEST PRESSURE MEANS FOR CLOSING THE SUPPLY AND ESCAPE CONDUIT RESPONSIVE TO FLUID PRESSURE OF THE TEST PRESSURE MEANS.
References Cited (Backward Citations)
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US2426406A
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US2522927A
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US2565086A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-05-05 | 1967-11-04 | 1968-05-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-05-05 | 1971-11-04 | 1972-05-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-05-05 | 1975-11-04 | 1976-05-05 | $7700.00 | Window Closed / Lapsed |