Patent US3078679A successfully refreshed from Google Patents.
US3078679A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pneumatic operating device
Assignee: Dunlop Rubber Co Ltd
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Filing: 1961-01-23
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Granted: 1963-02-26
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Expires: 1981-01-23
Abstract
No abstract record available.
Inventors
- 👤 Mortimer Frank Radcliffe
- 👤 Cardoe Edward Alan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:25
CPC Classifications
F; F15; F15B; F15B7/00; F15B7/06; F15B7/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
156 words
A PNEUMATIC OPERATING DEVICE COMPRISING A DEFORMABLE, HOLLOW, OPERATING UNIT, A CONDUIT IN FREE COMMUNICATION WITH SAID UNIT TO RECEIVE AIR EXPELLED FROM SAID UNIT ON DEFORMATION AND TO RETURN AIR TO SAID UNIT ON RETURN OF SAID UNIT FROM DEFORMATION, SAID UNIT HAVING AN OPENING TO ATMOSPHERE FROM SAID UNIT AND CONDUIT AND MEANS ACTUATED BY SAID UNIT UPON INITIAL DEFORMATION TO CLOSE SAID OPENING FROM SAID UNIT AND CONDUIT AND TO RELEASE SAID OPENING UPON RETURN OF SAID UNIT FROM DEFORMATION, SAID OPERATING UNIT COMPRISING A BASE AND A DOME-SHAPED ENCLOSURE MOUNTED ON SAID BASE AND FORMED OF A MOLDED, RESILIENT, ELASTOMERIC MATERIAL SEALED FLUID-TIGHTLY ON SAID BASE AND IN WHICH SAID CONDUIT OPENS INTO SAID ENCLOSURE THROUGH SAID BASE AND SAID OPENING TO ATMOSPHERE IS POSITIONED IN SAID BASE ADJACENT TO SAID CONDUIT AND SAID MEANS TO CLOSE AND RELEASE SAID OPENING COMPRISES A VALVE BETWEEN SAID OPENING AND SAID ENCLOSURE AND CONDUIT.
Claim 2
Dependent Claim
156 words
A PNEUMATIC OPERATING DEVICE COMPRISING A DEFORMABLE, HOLLOW, OPERATING UNIT, A CONDUIT IN FREE COMMUNICATION WITH SAID UNIT TO RECEIVE AIR EXPELLED FROM SAID UNIT ON DEFORMATION AND TO RETURN AIR TO SAID UNIT ON RETURN OF SAID UNIT FROM DEFORMATION, SAID UNIT HAVING AN OPENING TO ATMOSPHERE FROM SAID UNIT AND CONDUIT AND MEANS ACTUATED BY SAID UNIT UPON INITIAL DEFORMATION TO CLOSE SAID OPENING FROM SAID UNIT AND CONDUIT AND TO RELEASE SAID OPENING UPON RETURN OF SAID UNIT FROM DEFORMATION, SAID OPERATING UNIT COMPRISING A BASE AND A DOME-SHAPED ENCLOSURE MOUNTED ON SAID BASE AND FORMED OF A MOLDED, RESILIENT, ELASTOMERIC MATERIAL SEALED FLUID-TIGHTLY ON SAID BASE AND IN WHICH SAID CONDUIT OPENS INTO SAID ENCLOSURE THROUGH SAID BASE AND SAID OPENING TO ATMOSPHERE IS POSITIONED IN SAID BASE ADJACENT TO SAID CONDUIT AND SAID MEANS TO CLOSE AND RELEASE SAID OPENING COMPRISES A VALVE BETWEEN SAID OPENING AND SAID ENCLOSURE AND CONDUIT.
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) | 1966-02-25 | 1966-08-27 | 1967-02-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-02-25 | 1970-08-27 | 1971-02-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-02-25 | 1974-08-27 | 1975-02-26 | $7700.00 | Window Closed / Lapsed |