US3186702A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid spring
Assignee: Tayco Developments Inc
•
Filing: 1962-02-23
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Granted: 1965-06-01
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Expires: 1982-02-23
Abstract
No abstract record available.
Inventors
- 👤 Taylor Paul Hollis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 04:30
CPC Classifications
F; F16; F16F; F16F5/00; Y; Y10; Y10S; Y10S277/00; Y10S277/934
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
118 words
IN A LIQUID SPRING INCLUDING A CYLINDER MEMBER AND AN INTERNAL MEMEBR WITHIN THE CYLINDER MEMBER COOPERATING TO DEFINE A CHAMBER CONTAINING LIQUID MEANS, THE SPRING RELAYING UPON COMPRESSIBILITY OF LIQUID FOR ITS RESILIENCE, AN IMPROVEMENT COMPRISING: A GROOVE FORMED IN ONE OF SAID MEMBERS, BETWEEN SAID ONE MEMBER AND THE OTHER OF SAID MEMBERS, AND SEAL MEANS FORMED OF EXPANDABLE MATERIAL SEATED IN SAID GROOVE, SAID LIQUID MEANS INCLUDING AT LEAST ONE LIQUID WHICH IS EFFECTIVE UPON SAID EXPANDABLE MATERIAL TO CAUSE SAID SEAL MEANS TO INCREASE IN VOLUME AND EXERT A PREDETERMINED SEAL PRESSURE BETWEEN SAID MEMBERS IN EXCESS OF THE PRESSURE EXERTED UPON SAID LIQUID MEANS BY COMPRESSION DURING NORMAL OPERATION OF THE LIQUID SPRING.
Claim 2
Dependent Claim
118 words
IN A LIQUID SPRING INCLUDING A CYLINDER MEMBER AND AN INTERNAL MEMEBR WITHIN THE CYLINDER MEMBER COOPERATING TO DEFINE A CHAMBER CONTAINING LIQUID MEANS, THE SPRING RELAYING UPON COMPRESSIBILITY OF LIQUID FOR ITS RESILIENCE, AN IMPROVEMENT COMPRISING: A GROOVE FORMED IN ONE OF SAID MEMBERS, BETWEEN SAID ONE MEMBER AND THE OTHER OF SAID MEMBERS, AND SEAL MEANS FORMED OF EXPANDABLE MATERIAL SEATED IN SAID GROOVE, SAID LIQUID MEANS INCLUDING AT LEAST ONE LIQUID WHICH IS EFFECTIVE UPON SAID EXPANDABLE MATERIAL TO CAUSE SAID SEAL MEANS TO INCREASE IN VOLUME AND EXERT A PREDETERMINED SEAL PRESSURE BETWEEN SAID MEMBERS IN EXCESS OF THE PRESSURE EXERTED UPON SAID LIQUID MEANS BY COMPRESSION DURING NORMAL OPERATION OF THE LIQUID SPRING.
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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) | 1968-05-31 | 1968-11-30 | 1969-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-05-31 | 1972-11-30 | 1973-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-05-31 | 1976-11-30 | 1977-06-01 | $7700.00 | Window Closed / Lapsed |