US3200715A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Piston assemblies
Assignee: US Industries Inc
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Filing: 1964-04-13
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Granted: 1965-08-17
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Expires: 1984-04-13
Abstract
No abstract record available.
Inventors
- 👤 Jack B Ottestad
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:30
CPC Classifications
B; B21; B21J; B21J7/00; B21J7/20; B21J7/22; B21J7/24; B30; B30B; B30B15/00; B30B15/0052; F; F16; F16J; F16J15/00; F16J15/02; F16J15/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
80 words
IN A POWER UNIT (A) A CYLINDER (B) A PISTON RECIPROCABLE IN SAID CYLINDER THROUGH A PREDETERMINED STROKE, (C) SAID PISTON HAVING TWO END PORTIONS (D) AN ANNULAR SEALING RING IN ONE END OF SAID CYLINDER, AND (E) ABUTMENT MEANS WITHIN SAID RING, (F) ONE OF SAID END PORTIONS BEING MOVABLE INTO SEALING ENGAGEMENT WITH SAID SEALING RING AND THEN MOVABLE FURTHER RELATIVE TO SAID SEALING RING INTO ABUTTING ENGAGEMENT WITH SAID ABUTMENT MEANS AST ONE END OF SAID STROKE.
Claim 2
Dependent Claim
80 words
IN A POWER UNIT (A) A CYLINDER (B) A PISTON RECIPROCABLE IN SAID CYLINDER THROUGH A PREDETERMINED STROKE, (C) SAID PISTON HAVING TWO END PORTIONS (D) AN ANNULAR SEALING RING IN ONE END OF SAID CYLINDER, AND (E) ABUTMENT MEANS WITHIN SAID RING, (F) ONE OF SAID END PORTIONS BEING MOVABLE INTO SEALING ENGAGEMENT WITH SAID SEALING RING AND THEN MOVABLE FURTHER RELATIVE TO SAID SEALING RING INTO ABUTTING ENGAGEMENT WITH SAID ABUTMENT MEANS AST ONE END OF SAID STROKE.
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) | 1968-08-16 | 1969-02-15 | 1969-08-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-16 | 1973-02-15 | 1973-08-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-16 | 1977-02-15 | 1977-08-17 | $7700.00 | Window Closed / Lapsed |