Patent US3122376A successfully refreshed from Google Patents.
US3122376A
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Assignee: A AND C ENGINEERING Co
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Filing: 1962-11-05
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Granted: 1964-02-25
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Expires: 1982-11-05
Abstract
No abstract record available.
Inventors
- 👤 Sr George L Atherholt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 17:36
CPC Classifications
B; B23; B23B; B23B31/00; B23B31/02; B23B31/24; B23B31/30; B23B31/305; Y; Y10; Y10S; Y10S285/00; Y10S285/92; Y10T; Y10T279/00; Y10T279/10; Y10T279/1021; Y10T279/1024; Y10T279/1029; Y10T279/12; Y10T279/1208
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
104 words
IN A PRESSURE HOLDING DEVICE OF THE TYPE UTILIZING A CIRCUMFERENTIAL WALL WHICH IS SHIFTED RADIALLY BY INTERNAL PRESSURE WHICH INCLUDES: A SUPPORTING BODY HAVING A CYLINDRICAL SURFACE, A MOVABLE SHELL FITTED TO SAID CYLINDRICAL SURFACE, AN ANNULAR CHAMBER FORMED BETWEEN ONE SURFACE OF SAID SHELL AND A CYLINDRICAL SURFACE OF SAID BODY, A PRESSURE CHAMBER IN SAID BODY, A PISTON MOVABLE IN SAID PRESSURE CHAMBER FOR DEVELOPING PRESSURE THEREIN ON A FLUID ENTRAPPED THEREIN, AND PASSAGEWAYS CONNECTING SAID PRESSURE CHAMBER AND SAID ANNULAR CHAMBER, THAT IMPROVEMENT WHICH COMPRISES: (A) A FLUID SUPPLY RESERVOIR IN SAID BODY INCLUDING A BORE FORMED IN SAID BODY,
Claim 2
Dependent Claim
104 words
IN A PRESSURE HOLDING DEVICE OF THE TYPE UTILIZING A CIRCUMFERENTIAL WALL WHICH IS SHIFTED RADIALLY BY INTERNAL PRESSURE WHICH INCLUDES: A SUPPORTING BODY HAVING A CYLINDRICAL SURFACE, A MOVABLE SHELL FITTED TO SAID CYLINDRICAL SURFACE, AN ANNULAR CHAMBER FORMED BETWEEN ONE SURFACE OF SAID SHELL AND A CYLINDRICAL SURFACE OF SAID BODY, A PRESSURE CHAMBER IN SAID BODY, A PISTON MOVABLE IN SAID PRESSURE CHAMBER FOR DEVELOPING PRESSURE THEREIN ON A FLUID ENTRAPPED THEREIN, AND PASSAGEWAYS CONNECTING SAID PRESSURE CHAMBER AND SAID ANNULAR CHAMBER, THAT IMPROVEMENT WHICH COMPRISES: (A) A FLUID SUPPLY RESERVOIR IN SAID BODY INCLUDING A BORE FORMED IN SAID BODY,
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) | 1967-02-24 | 1967-08-26 | 1968-02-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-02-24 | 1971-08-26 | 1972-02-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-02-24 | 1975-08-26 | 1976-02-25 | $7700.00 | Window Closed / Lapsed |