US3142978A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Motion transmitting apparatus
Assignee: Pure Oil Co
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Filing: 1962-01-08
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Granted: 1964-08-04
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Expires: 1982-01-08
Abstract
No abstract record available.
Inventors
- 👤 Donald L Klass
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 06:21
CPC Classifications
G; G01; G01M; G01M99/00; G01M99/004; G01M7/00; G01M7/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
116 words
AN APPARATUS OF THE CHARACTER DESCRIBED COMPRISING: (A) A ROTATABLY SUPPORTED HOLLOW DRUM PROVIDED WITH FIRST AND SECOND ELECTRIC FIELD FLUID RESPONSIVE COUPLING SURFACES WHICH ARE SURFACES OF REVOLUTION; (B) MEANS WITHIN SAID DRUM FOR SUPPORTING MATERIAL TO BE OPERATED UPON; (C) FIRST AND SECOND ELECTRIC FIELD RESPONSIVE FLUID COUPLING MEMBERS ROTATABLY SUPPORTED IN CO-AXIAL RELATION WITH SAID DRUM AND HAVING SURFACES OF REVOLUTION SPACES FROM SAID FIRST AND SECOND COUPLING SURFACES, RESPECTIVELY, SAID DRUM, FIRST COUPLING MEMBER AND SECOND COUPLING MEMBER COOPERATING TO FORM TWO ELECTRIC FIELD-RESPONSIVE FLUID COUPLINGS; (D) MEANS FOR ROTATING AT LEAST ONE COUPLING MEMBER; (E) AND AUTOMATIC MEANS FOR ALTERNATELY ELECTRICALLY ENERGIZING ONE COUPLING SUBSTANTIALLY INSTANTANEOUSLY UPON DE-ENERGIZING THE OTHER COUPLING.
Claim 2
Independent Claim
116 words
AN APPARATUS OF THE CHARACTER DESCRIBED COMPRISING: (A) A ROTATABLY SUPPORTED HOLLOW DRUM PROVIDED WITH FIRST AND SECOND ELECTRIC FIELD FLUID RESPONSIVE COUPLING SURFACES WHICH ARE SURFACES OF REVOLUTION; (B) MEANS WITHIN SAID DRUM FOR SUPPORTING MATERIAL TO BE OPERATED UPON; (C) FIRST AND SECOND ELECTRIC FIELD RESPONSIVE FLUID COUPLING MEMBERS ROTATABLY SUPPORTED IN CO-AXIAL RELATION WITH SAID DRUM AND HAVING SURFACES OF REVOLUTION SPACES FROM SAID FIRST AND SECOND COUPLING SURFACES, RESPECTIVELY, SAID DRUM, FIRST COUPLING MEMBER AND SECOND COUPLING MEMBER COOPERATING TO FORM TWO ELECTRIC FIELD-RESPONSIVE FLUID COUPLINGS; (D) MEANS FOR ROTATING AT LEAST ONE COUPLING MEMBER; (E) AND AUTOMATIC MEANS FOR ALTERNATELY ELECTRICALLY ENERGIZING ONE COUPLING SUBSTANTIALLY INSTANTANEOUSLY UPON DE-ENERGIZING THE OTHER COUPLING.
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) | 1967-08-04 | 1968-02-03 | 1968-08-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-08-04 | 1972-02-03 | 1972-08-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-08-04 | 1976-02-03 | 1976-08-04 | $7700.00 | Window Closed / Lapsed |