US3202059A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Piston assembly
Assignee: US Industries Inc
•
Filing: 1962-08-13
•
Granted: 1965-08-24
•
Expires: 1982-08-13
Abstract
No abstract record available.
Inventors
- 👤 Jack B Ottestad
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:46
CPC Classifications
B; B21; B21J; B21J7/00; B21J7/20; B21J7/22; B21J7/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
121 words
IN A POWER UNIT EMBODYING A SUPPORTING MEMBER HAVING A PRESSURE CHAMBER THEREIN, MEANS FOR FEEDING WORKING FLUID UNDER PRESSURE INTO SAID CHAMBER, AND A CYLINDER HAVING ONE END IN COMMUNICATION WITH SAID CHAMBER, (A) A PISTON RECIPROCABLE IN SAID CYLINDER THROUGH A PREDETERMINED STROKE, (B) SAID PISTON HAVING TWO END FACES, AND (C) SEALING MEANS MOUNTED ON SAID SUPPORTING MEMBER FOR SEALING ONE END FACE OF SAID PISTON AGAINST FLUID PRESSURE IN SAID CHAMBER, (D) SAID SEALING MEANS COMPRISING (1) A RETAINER RING MOUNTED ON SAID SUPPORTING MEMBER, AND (2) AN ANNULAR SEAT HELD ON SAID SUPPORTING MEMBER BY SAID RETAINER RING IN POSITION TO ENGAGE SAID PISTON, (E) SAID ANNULAR SEAT BEING TRANSVERSELY MOVABLE RELATIVE TO SAID RETAINER RING.
Claim 2
Dependent Claim
121 words
IN A POWER UNIT EMBODYING A SUPPORTING MEMBER HAVING A PRESSURE CHAMBER THEREIN, MEANS FOR FEEDING WORKING FLUID UNDER PRESSURE INTO SAID CHAMBER, AND A CYLINDER HAVING ONE END IN COMMUNICATION WITH SAID CHAMBER, (A) A PISTON RECIPROCABLE IN SAID CYLINDER THROUGH A PREDETERMINED STROKE, (B) SAID PISTON HAVING TWO END FACES, AND (C) SEALING MEANS MOUNTED ON SAID SUPPORTING MEMBER FOR SEALING ONE END FACE OF SAID PISTON AGAINST FLUID PRESSURE IN SAID CHAMBER, (D) SAID SEALING MEANS COMPRISING (1) A RETAINER RING MOUNTED ON SAID SUPPORTING MEMBER, AND (2) AN ANNULAR SEAT HELD ON SAID SUPPORTING MEMBER BY SAID RETAINER RING IN POSITION TO ENGAGE SAID PISTON, (E) SAID ANNULAR SEAT BEING TRANSVERSELY MOVABLE RELATIVE TO SAID RETAINER RING.
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) | 1968-08-23 | 1969-02-22 | 1969-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-23 | 1973-02-22 | 1973-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-23 | 1977-02-22 | 1977-08-24 | $7700.00 | Window Closed / Lapsed |