US3445688A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Linear motion device
Assignee: Westinghouse Electric Corp
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Filing: 1964-12-22
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Granted: 1969-05-20
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Expires: 1984-12-22
Abstract
No abstract record available.
Inventors
- 👤 John P Thorel
- 👤 Donald G Sherwood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 20:56
CPC Classifications
H; H02; H02K; H02K33/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
151 words
IN A LINEAR MOTION DEVICE, THE COMBINATION OF A LINEAR ELEMENT, A CYLINDRICAL LINEAR ACTUATING DEVICE SURROUNDING SAID LINEAR ELEMENT AND MOVABLE RECIPROCALLY ALONG THE AXIS OF THE LINEAR ELEMENT BETWEN STATIONARY ABUTMENTS, A STATIONARY CYLINDRICAL GRIPPING MEMBER SURROUNDING THE LINEAR ELEMENT AND SPACED FROM SAID ACTUATING DEVICE ALONG THE AXIS OF THE LINEAR ELEMENT, SAID STATIONARY GRIPPING MEMBER FORMING ONE OF SAID ABUTMENTS, MEANS FOR EFFECTING FRICTIONAL ENGAGEMENT BETWEEN THE LINEAR ELEMENT AND THE INNER PERIPHERY OF SAID ACTUATING DEVICE, MEANS FOR EFFECTING FRICTIONAL ENGAGEMENT BETWEEN THE LINEAR ELEMENT AND THE INNER PERIPHERY OF THE STATIONARY GRIPPING MEMBER, ELECTROMAGNETIC COIL MEANS ADAPTED WHEN ENERGIZED TO URGE SAID ACTUATING DEVICE INTO ENGAGEMENT WITH SAID ONE ABUTMENT, AND RESILIENT MEANS POSITIONED ADJACENT THAT END OF SAID ACTUATING DEVICE REMOTE FROM SAID ONE ABUTMENT FOR MOVING THE ACTUATING DEVICE INTO ENGAGEMENT WITH THE OTHER OF THE ABUTMENTS INDEPENDENTLY OF ANY MAGNETIC ACTUATING DEVICE.
Claim 2
Dependent Claim
151 words
IN A LINEAR MOTION DEVICE, THE COMBINATION OF A LINEAR ELEMENT, A CYLINDRICAL LINEAR ACTUATING DEVICE SURROUNDING SAID LINEAR ELEMENT AND MOVABLE RECIPROCALLY ALONG THE AXIS OF THE LINEAR ELEMENT BETWEN STATIONARY ABUTMENTS, A STATIONARY CYLINDRICAL GRIPPING MEMBER SURROUNDING THE LINEAR ELEMENT AND SPACED FROM SAID ACTUATING DEVICE ALONG THE AXIS OF THE LINEAR ELEMENT, SAID STATIONARY GRIPPING MEMBER FORMING ONE OF SAID ABUTMENTS, MEANS FOR EFFECTING FRICTIONAL ENGAGEMENT BETWEEN THE LINEAR ELEMENT AND THE INNER PERIPHERY OF SAID ACTUATING DEVICE, MEANS FOR EFFECTING FRICTIONAL ENGAGEMENT BETWEEN THE LINEAR ELEMENT AND THE INNER PERIPHERY OF THE STATIONARY GRIPPING MEMBER, ELECTROMAGNETIC COIL MEANS ADAPTED WHEN ENERGIZED TO URGE SAID ACTUATING DEVICE INTO ENGAGEMENT WITH SAID ONE ABUTMENT, AND RESILIENT MEANS POSITIONED ADJACENT THAT END OF SAID ACTUATING DEVICE REMOTE FROM SAID ONE ABUTMENT FOR MOVING THE ACTUATING DEVICE INTO ENGAGEMENT WITH THE OTHER OF THE ABUTMENTS INDEPENDENTLY OF ANY MAGNETIC ACTUATING DEVICE.
References Cited (Backward Citations)
SU155217A1
Cited
US2803761A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-05-19 | 1972-11-18 | 1973-05-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-05-19 | 1976-11-18 | 1977-05-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-05-19 | 1980-11-18 | 1981-05-20 | $7700.00 | Window Closed / Lapsed |