US3141381A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Remote control apparatus
Assignee: National Castings Co
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Filing: 1960-06-20
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Granted: 1964-07-21
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Expires: 1980-06-20
Abstract
No abstract record available.
Inventors
- 👤 Macdonald Charles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 06:47
CPC Classifications
B; B65; B65G; B65G47/00; B65G47/74; B65G47/76; B65G47/766
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
178 words
CONTROL APPARATUS COMPRISING: A JACK HAVING AN EXTERNAL CONTROL MEMBER MOVABLE RELATIVE TO THE BODY OF THE JACK THROUGH ADVANCE AND RETURN MOVEMENTS ALONG A STRAIGHT PATH; DETENT MEANS MOUNTED ON SAID MEMBER PROJECTING THEREFROM IN A LATERAL DIRECTION RELATIVE TO THE PATH; A SECOND JACK MOUNTED IN FIXED RELATION WITH THE FIRST JACK AND HAVING AN EXTERNAL GATE MOVABLE IN A STRAIGHT PATH TOWARD AND AWAY FROM SAID PATH OF THE MEMBER, SAID GATE HAVING AN ABUTMENT SURFACE FACING IN A DIRECTION PARALLEL TO THE FIRST PATH AND IN REVERSE RELATION TO ADVANCE MOVEMENTS OF THE MEMBER; SAID SECOND JACK DISPOSED RELATIVE TO THE FIRST JACK FOR MOVEMENT OF THE GATE INTO AND OUT OF THE AMBIT OF THE DETENT MEANS FOR STOPPAGE OF THE MEMBER AT AN INTERMEDIATE POINT OF ITS TRAVEL; MEANS FOR ACTUATING SAID SECOND JACK TO NORMALLY MAINTAIN SAID GATE OUT OF SAID AMBIT; AND MEANS FOR SIMULTANEOUSLY ACTUATING THE FIRST JACK IN ADVANCE MOVEMENTS, AND ACTUATING THE SECOND JACK TO ADVANCE SAID GATE INTO POSITION FOR BEING ENGAGED BY THE DETENT MEANS.
Claim 2
Dependent Claim
178 words
CONTROL APPARATUS COMPRISING: A JACK HAVING AN EXTERNAL CONTROL MEMBER MOVABLE RELATIVE TO THE BODY OF THE JACK THROUGH ADVANCE AND RETURN MOVEMENTS ALONG A STRAIGHT PATH; DETENT MEANS MOUNTED ON SAID MEMBER PROJECTING THEREFROM IN A LATERAL DIRECTION RELATIVE TO THE PATH; A SECOND JACK MOUNTED IN FIXED RELATION WITH THE FIRST JACK AND HAVING AN EXTERNAL GATE MOVABLE IN A STRAIGHT PATH TOWARD AND AWAY FROM SAID PATH OF THE MEMBER, SAID GATE HAVING AN ABUTMENT SURFACE FACING IN A DIRECTION PARALLEL TO THE FIRST PATH AND IN REVERSE RELATION TO ADVANCE MOVEMENTS OF THE MEMBER; SAID SECOND JACK DISPOSED RELATIVE TO THE FIRST JACK FOR MOVEMENT OF THE GATE INTO AND OUT OF THE AMBIT OF THE DETENT MEANS FOR STOPPAGE OF THE MEMBER AT AN INTERMEDIATE POINT OF ITS TRAVEL; MEANS FOR ACTUATING SAID SECOND JACK TO NORMALLY MAINTAIN SAID GATE OUT OF SAID AMBIT; AND MEANS FOR SIMULTANEOUSLY ACTUATING THE FIRST JACK IN ADVANCE MOVEMENTS, AND ACTUATING THE SECOND JACK TO ADVANCE SAID GATE INTO POSITION FOR BEING ENGAGED BY THE DETENT MEANS.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-07-21 | 1968-01-20 | 1968-07-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-07-21 | 1972-01-20 | 1972-07-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-07-21 | 1976-01-20 | 1976-07-21 | $7700.00 | Window Closed / Lapsed |