Patent US3448303A successfully refreshed from Google Patents.
US3448303A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Linear motor structure
Assignee: Westinghouse Electric Corp
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Filing: 1965-02-08
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Granted: 1969-06-03
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Expires: 1985-02-08
Abstract
No abstract record available.
Inventors
- 👤 John P Thorel
- 👤 Chia Huan Lee
- 👤 Donald G Sherwood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:22
CPC Classifications
H; H02; H02K; H02K7/00; H02K7/06; H02K7/065; G; G21; G21C; G21C7/00; G21C7/06; G21C7/08; G21C7/12; H01; H01F; H01F7/00; H01F7/06; H01F7/08; H01F7/16; H01F7/1607; H01F7/1615; H01F7/18; H01F7/121; H01F7/122; Y; Y02; Y02E; Y02E30/00; Y02E30/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
116 words
A MOTIVE DEVICE COMPRISING, A DRIVEN MEMBER MOUNTED FOR RECIPROCAL MOVEMENT, AND ACTUATING MEMBER ALSO MOUNTED FOR RECIPROCAL MOVEMENT ADJACENT SAID DRIVEN MEMBER, SPACED FIXED ABUTMENTS MOUNTED FOR LIMITING PATH OF MOVEMENT OF SAID ACTUATING MEMBER FOR LIMITING MOVEMENT THEREOF, MEANS FOR FRICTIONALLY COUPLING SAID ACTUATING AND DRIVEN MEMBERS FOR LIMITED MOVEMENT TOGETHER, BIASING MEANS FOR NORMALLY MAINTAINING SAID ACTUATING MEMBER AT ONE POSITION SPACED FROM AT LEAST ONE OF SAID ABUTMENTS, AND MEANS FOR INTERMITTENTLY DRIVING SAID ACTUATING DEVICE IN A DIRECTION TOWARD SAID ONE ABUTMENT WITH A FORCE SUCH THAT A PREDETERMINED OVERTRAVEL TO SAID DRIVEN MEMBER OCCURS DUE TO ITS KINETIC INERTIA BEYOND THE POINT WHERE SAID ACTUATING MEMBER ENGAGES SAID ONE ABUTMENT.
Claim 2
Dependent Claim
116 words
A MOTIVE DEVICE COMPRISING, A DRIVEN MEMBER MOUNTED FOR RECIPROCAL MOVEMENT, AND ACTUATING MEMBER ALSO MOUNTED FOR RECIPROCAL MOVEMENT ADJACENT SAID DRIVEN MEMBER, SPACED FIXED ABUTMENTS MOUNTED FOR LIMITING PATH OF MOVEMENT OF SAID ACTUATING MEMBER FOR LIMITING MOVEMENT THEREOF, MEANS FOR FRICTIONALLY COUPLING SAID ACTUATING AND DRIVEN MEMBERS FOR LIMITED MOVEMENT TOGETHER, BIASING MEANS FOR NORMALLY MAINTAINING SAID ACTUATING MEMBER AT ONE POSITION SPACED FROM AT LEAST ONE OF SAID ABUTMENTS, AND MEANS FOR INTERMITTENTLY DRIVING SAID ACTUATING DEVICE IN A DIRECTION TOWARD SAID ONE ABUTMENT WITH A FORCE SUCH THAT A PREDETERMINED OVERTRAVEL TO SAID DRIVEN MEMBER OCCURS DUE TO ITS KINETIC INERTIA BEYOND THE POINT WHERE SAID ACTUATING MEMBER ENGAGES SAID ONE ABUTMENT.
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) | 1972-06-02 | 1972-12-02 | 1973-06-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-06-02 | 1976-12-02 | 1977-06-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-06-02 | 1980-12-02 | 1981-06-03 | $7700.00 | Window Closed / Lapsed |