Patent US3149455A successfully refreshed from Google Patents.
US3149455A
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Condition responsive power elements
Assignee: Robertshaw US Holding Corp
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Filing: 1963-11-06
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Granted: 1964-09-22
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Expires: 1983-11-06
Abstract
No abstract record available.
Inventors
- 👤 James U Daly
- 👤 George P Saliaris
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:21
CPC Classifications
G; G01; G01K; G01K5/00; G01K5/32; G01K5/44; F; F16; F16F; F16F7/00; H; H01; H01H; H01H35/00; H01H35/24; H01H35/245; Y; Y10; Y10S; Y10S236/00; Y10S236/05; Y10S33/00; Y10S33/19
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
119 words
A CONDITION RESPONSIVE POWER ELEMENT COMPRISING: (A) MEANS DEFINING AN HYDRAULIC COMPRESSION CHAMBER, (B) AN ELONGATED HOLLOW SOCK OF ELASTOMERIC MATERIAL HAVING A CYLINDRICAL WALL PORTION DEFINING A CENTRAL BORE OF A FIRST PREDETERMINED DIAMETER WHEN SAID SOCK IS RELAXED, SAID SOCK BEING DISPOSED IN SAID HYDRAULIC COMPRESSION CHAMBER, (C) A ROD EXTENDING INTO SAID BORE AND RECIPROCABLE THEREIN, SAID ROD HAVING A SMOOTH CYLINDRICAL SURFACE OF A SECOND PREDETERMINED DIAMETER, AND (D) LUBRICANT BETWEEN SAID ROD AND SAID SOCK, (E) SAID FIRST PREDETERMINED DIAMETER BEING GREATER THAN SAID SECOND PREDETERMINED DIAMETER BY SUCH AN AMOUNT THAT UPON CIRCUMFERENTIAL COMPRESSION OF SAID SOCK WALL PORTION TO REDUCE SAID BORE TO SAID SECOND DIAMETER, COLLAPSE OF SAID SOCK IS IMMINENT.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-09-22 | 1968-03-23 | 1968-09-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-09-22 | 1972-03-23 | 1972-09-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-09-22 | 1976-03-23 | 1976-09-22 | $7700.00 | Window Closed / Lapsed |