US3173345A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Piston
Assignee: Individual
•
Filing: 1963-02-12
•
Granted: 1965-03-16
•
Expires: 1983-02-12
Abstract
No abstract record available.
Inventors
- 👤 Thompson Marion Lee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:37
CPC Classifications
F; F02; F02F; F02F3/00; F02F3/0076
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
105 words
A PISTON WHICH COMPRISES: A HEAD; A CYLINDRICAL SKIRT INTEGRAL WITH SAID HEAD; OPPOSED MEANS INTEGRALLY FORMED ON THE INTERNAL SIDE OF SAID PISTON ADAPTED TO RECEIVE STRUCTURE TO SUPPORT SAID PISTON WITHIN A CYLINDER; AND A PLURALITY OF CONTINUOUS WEBS FORMED WITHIN THE PISTON AND DISPOSED BETWEEN SAID SUPPORT MEANS IN SPACED RELATIONSHIP TO SAID SUPPORT MEANS AND SUBSTANTIALLY PARALLE TO EACH OTHER, ONE OF SAID WEBS BEING GENERALLY CENTRALLY LOCATED, AND ALL OF SAID WEBS BEING INTEGRAL WITH SAID HEAD AND SKIRT SO AS TO PROVIDE STABILITY THERETO AND TO RESIST COMPRESSION FORCES WHICH OCCUR WITHIN A CYLINDER AND SUR ROUND THE PISTON.
Claim 2
Dependent Claim
105 words
A PISTON WHICH COMPRISES: A HEAD; A CYLINDRICAL SKIRT INTEGRAL WITH SAID HEAD; OPPOSED MEANS INTEGRALLY FORMED ON THE INTERNAL SIDE OF SAID PISTON ADAPTED TO RECEIVE STRUCTURE TO SUPPORT SAID PISTON WITHIN A CYLINDER; AND A PLURALITY OF CONTINUOUS WEBS FORMED WITHIN THE PISTON AND DISPOSED BETWEEN SAID SUPPORT MEANS IN SPACED RELATIONSHIP TO SAID SUPPORT MEANS AND SUBSTANTIALLY PARALLE TO EACH OTHER, ONE OF SAID WEBS BEING GENERALLY CENTRALLY LOCATED, AND ALL OF SAID WEBS BEING INTEGRAL WITH SAID HEAD AND SKIRT SO AS TO PROVIDE STABILITY THERETO AND TO RESIST COMPRESSION FORCES WHICH OCCUR WITHIN A CYLINDER AND SUR ROUND THE PISTON.
References Cited (Backward Citations)
US1358364A
Cited
US2195552A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-03-15 | 1968-09-14 | 1969-03-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-03-15 | 1972-09-14 | 1973-03-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-03-15 | 1976-09-14 | 1977-03-16 | $7700.00 | Window Closed / Lapsed |