US3207265A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Elevator control system
Assignee: Westinghouse Electric Corp
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Filing: 1961-12-27
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Granted: 1965-09-21
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Expires: 1981-12-27
Abstract
No abstract record available.
Inventors
- 👤 Alvin O Lund
- 👤 William M Ostrander
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 21:30
CPC Classifications
B; B66; B66B; B66B1/00; B66B1/34; B66B1/36; B66B1/40; B66B1/24; B66B1/26
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
131 words
A LOAD-TRANSPORTING SYSTEM COMPRISING A STRUCTURE, A LOAD-TRANSPORTING DEVICE MOVABLE RELATIVE TO THE STRUCTURE, A CONTROL UNIT FOR CONTROLLING MOVEMENT OF THE LOADTRANSPORTING DEVICE, SAID UNIT HAVING A GENERALLY HOURGLASS-SHAPED CONFIGURATION AND COMPRISING A PAIR OF ADJACENT SIMILAR TAPERED CONTROL PORTIONS, A RADIANT ENERGYFIELD-PRODUCING TRANSDUCER MEANS MOUNTED FOR MOVEMENT RELATIVE TO SAID CONTROL UNIT IN THE DIRECTION OF THE AXIS OF SAID HOURGLASS-SHAPED CONFIGURATION IN ACCORDANCE WITH MOVEMENT OF SAID LOAD-TRANSPORTING DEVICE RELATIVE TO THE STRUCTURE, SAID CONTROL UNIT BEING POSITIONED TO PASS THROUGH THE FIELD OF SAID TRANSDUCER MEANS DURING RELATIVE MOVEMENT THEREBETWEEN, SAID TRANSDUCER MEANS INCLUDING MEANS FOR PRODUCING AN ELECTRIC QUANTITY DEPENDENT ON THE RELATIVE POSITIONS OF SAID TRANSDUCER MEANS AND THE CONTROL UNIT, AND MEANS RESPONSIVE TO SAID ELECTRIC QUANTITY FOR CONTROLLING MOVEMENT OF THE LOAD-TRANSPORTING DEVICE.
Claim 2
Dependent Claim
131 words
A LOAD-TRANSPORTING SYSTEM COMPRISING A STRUCTURE, A LOAD-TRANSPORTING DEVICE MOVABLE RELATIVE TO THE STRUCTURE, A CONTROL UNIT FOR CONTROLLING MOVEMENT OF THE LOADTRANSPORTING DEVICE, SAID UNIT HAVING A GENERALLY HOURGLASS-SHAPED CONFIGURATION AND COMPRISING A PAIR OF ADJACENT SIMILAR TAPERED CONTROL PORTIONS, A RADIANT ENERGYFIELD-PRODUCING TRANSDUCER MEANS MOUNTED FOR MOVEMENT RELATIVE TO SAID CONTROL UNIT IN THE DIRECTION OF THE AXIS OF SAID HOURGLASS-SHAPED CONFIGURATION IN ACCORDANCE WITH MOVEMENT OF SAID LOAD-TRANSPORTING DEVICE RELATIVE TO THE STRUCTURE, SAID CONTROL UNIT BEING POSITIONED TO PASS THROUGH THE FIELD OF SAID TRANSDUCER MEANS DURING RELATIVE MOVEMENT THEREBETWEEN, SAID TRANSDUCER MEANS INCLUDING MEANS FOR PRODUCING AN ELECTRIC QUANTITY DEPENDENT ON THE RELATIVE POSITIONS OF SAID TRANSDUCER MEANS AND THE CONTROL UNIT, AND MEANS RESPONSIVE TO SAID ELECTRIC QUANTITY FOR CONTROLLING MOVEMENT OF THE LOAD-TRANSPORTING DEVICE.
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) | 1968-09-20 | 1969-03-22 | 1969-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-20 | 1973-03-22 | 1973-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-20 | 1977-03-22 | 1977-09-21 | $7700.00 | Window Closed / Lapsed |