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US3264530A
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US
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Rotary actuator
Assignee: Ledex Inc
•
Filing: 1962-01-05
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Granted: 1966-08-02
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Expires: 1982-01-05
Abstract
No abstract record available.
Inventors
- 👤 Gerald H Leland
- 👤 John L Cahill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 17:54
CPC Classifications
H; H02; H02K; H02K7/00; H02K7/06; H02K7/065; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18888
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
145 words
IN A ROTARY ACTUATOR, THE COMBINATION COMPRISING: A FIXED ASSEMBLY INCLUDING A CASING AND AN ELECTROMAGNET; A MOVABLE ASSEMBLY INCLUDING AN ARMATURE MOUNTED FOR AXIAL AND ROTARY MOVEMENT RELATIVE TO SAID FIXED ASSEMBLY AND A PLATE ATTACHED TO SAID ARMATURE FOR MOVEMENT THEREWITH; A ROTATABLE ELEMENT MOUNTED BETWEEN SAID PLATE AND A SURFACE PORTION OF SAID FIXED ASSEMBLY, ONE OF SAID PLATE AND SAID SURFCE PORTION HAVING AN ARCUATE INCLINED RECESS THEREIN WITHIN WHICH SAID ROTATABLE ELEMENT ROLLS, SAID ARMATURE BEING ATTRACTED AXIALLY TOWARD SAID ELECTROMAGNET UPON ENERGIZATION THEREOF WHEREUPON SAID ARMATURE AND SAID PLATE UNDERGO BOTH AXIAL AND ROTARY MOVEMENT RELATIVE TO SAID FIXED ASSEMBLY, SAID ROTARY MOVEMENT BEING LIMITED BY THE ARCUATE LENGTH OF SAID RECESS; AND LOW FRICTION BEARER MEANS INTERPOSED BETWEEN SAID FIXED ASSEMBLY AND SAID MOVABLE ASSEMBLY LIMITING AXIAL MOVEMENT OF SAID MOVABLE ASSEMBLY WITHOUT SUBSTANTIALLY RESTRICTING ITS ROTARY MOVEMENT.
Claim 2
Dependent Claim
145 words
IN A ROTARY ACTUATOR, THE COMBINATION COMPRISING: A FIXED ASSEMBLY INCLUDING A CASING AND AN ELECTROMAGNET; A MOVABLE ASSEMBLY INCLUDING AN ARMATURE MOUNTED FOR AXIAL AND ROTARY MOVEMENT RELATIVE TO SAID FIXED ASSEMBLY AND A PLATE ATTACHED TO SAID ARMATURE FOR MOVEMENT THEREWITH; A ROTATABLE ELEMENT MOUNTED BETWEEN SAID PLATE AND A SURFACE PORTION OF SAID FIXED ASSEMBLY, ONE OF SAID PLATE AND SAID SURFCE PORTION HAVING AN ARCUATE INCLINED RECESS THEREIN WITHIN WHICH SAID ROTATABLE ELEMENT ROLLS, SAID ARMATURE BEING ATTRACTED AXIALLY TOWARD SAID ELECTROMAGNET UPON ENERGIZATION THEREOF WHEREUPON SAID ARMATURE AND SAID PLATE UNDERGO BOTH AXIAL AND ROTARY MOVEMENT RELATIVE TO SAID FIXED ASSEMBLY, SAID ROTARY MOVEMENT BEING LIMITED BY THE ARCUATE LENGTH OF SAID RECESS; AND LOW FRICTION BEARER MEANS INTERPOSED BETWEEN SAID FIXED ASSEMBLY AND SAID MOVABLE ASSEMBLY LIMITING AXIAL MOVEMENT OF SAID MOVABLE ASSEMBLY WITHOUT SUBSTANTIALLY RESTRICTING ITS ROTARY MOVEMENT.
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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) | 1969-08-01 | 1970-01-31 | 1970-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-01 | 1974-01-31 | 1974-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-01 | 1978-01-31 | 1978-08-02 | $7700.00 | Window Closed / Lapsed |