US3256005A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Low-cost liquid spring
Assignee: Tayco Developments Inc
•
Filing: 1963-05-13
•
Granted: 1966-06-14
•
Expires: 1983-05-13
Abstract
No abstract record available.
Inventors
- 👤 Taylor Paul Hollis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 21:43
CPC Classifications
F; F16; F16F; F16F5/00; F16F9/00; F16F9/32; F16F9/36; F16F9/362; F16J; F16J15/00; F16J15/16; F16J15/32; Y; Y10; Y10S; Y10S277/00; Y10S277/907
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
106 words
A LIQUID SPRING INCLUDING A CYLINDER, A CYLINDER END CLOSURE FIXED TO SAID CYLINDER AND HAVING A PISTON CLEARING BORE THERETHROUGH AND AN INTERNAL CONICAL PRESSURE ANGLE, A PLASTIC SEAL MEMBER IN INTERFERENCE SEAL FIT WITH SAID CYLINDER AND HAVING A BORE CO-AXIAL WITH SAID END CLOSURE, SAID SEAL MEMBER BORE HAVING A LESSER DIAMETER THAN THE BORE OF SAID CYLINDER END CLOSURE, SAID SEAL MEMBER HAVING A CONICAL COMPLEMENTING PRESSURE ANGLE IN JUXTAPOSITION TO SAID END CLOSURE, AND A PISTON MEMBER EXTENDING THROUGH SAID BORES HAVING A CLEARANCE FIT TO SAID CYLINDER END CLOSURE BORE AND AN INTERFERENCE FIT TO SAID PLASTIC SEAL MEMBER BORE.
Claim 2
Dependent Claim
106 words
A LIQUID SPRING INCLUDING A CYLINDER, A CYLINDER END CLOSURE FIXED TO SAID CYLINDER AND HAVING A PISTON CLEARING BORE THERETHROUGH AND AN INTERNAL CONICAL PRESSURE ANGLE, A PLASTIC SEAL MEMBER IN INTERFERENCE SEAL FIT WITH SAID CYLINDER AND HAVING A BORE CO-AXIAL WITH SAID END CLOSURE, SAID SEAL MEMBER BORE HAVING A LESSER DIAMETER THAN THE BORE OF SAID CYLINDER END CLOSURE, SAID SEAL MEMBER HAVING A CONICAL COMPLEMENTING PRESSURE ANGLE IN JUXTAPOSITION TO SAID END CLOSURE, AND A PISTON MEMBER EXTENDING THROUGH SAID BORES HAVING A CLEARANCE FIT TO SAID CYLINDER END CLOSURE BORE AND AN INTERFERENCE FIT TO SAID PLASTIC SEAL MEMBER BORE.
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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) | 1969-06-13 | 1969-12-13 | 1970-06-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-06-13 | 1973-12-13 | 1974-06-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-06-13 | 1977-12-13 | 1978-06-14 | $7700.00 | Window Closed / Lapsed |