US3320822A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary actuator
Assignee: Ledex Inc
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Filing: 1965-04-12
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Granted: 1967-05-23
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Expires: 1985-04-12
Abstract
No abstract record available.
Inventors
- 👤 James W Tatom
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 17:11
CPC Classifications
H; H02; H02K; H02K7/00; H02K7/06; H02K7/065; F; F16; F16H; F16H25/00; F16H25/08; F16H25/12; F16H25/125; F16K; F16K31/00; F16K31/02; F16K31/06; H01; H01F; H01F7/00; H01F7/06; H01F7/08; H01F7/14; H01F7/145; H01H; H01H51/00; H01H51/02; H01H51/04; H01H51/06; H01H51/08; H01H51/082; H01H51/084; F16H2025/127; Y; Y10; Y10T; Y10T74/00; Y10T74/15; Y10T74/1526
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
324 words
A ROTARY ACTUATOR FOR IMPARTING ROTARY MOVEMENT TO A LOAD INCLUDING HOLDING MEANS TO NORMALLY RESIST ROTARY MOVEMENT OF SAID LOAD EXCEPT BY SAID CATURATOR COMPRISING, IN COMBINATION, A PRIMARY AXIAL TO LIMITED ROTARY MOTION CONVERSION MECHANISM INCLUDING FIRST AND SECOND MEMBERS RELATIVELY ROTATABLE ABOUT A ROTARY AXIS, SAID MEMBERS HAVING RELATIVE MOVEMENT ALONG SAID AXIS AND HAVING AXIALLY FACING SURFACES, MEANS INCLUDING SAID AXIALLY FACING SURFACES TO ROTATE ONE OF SAID MEMBERS RELATIVE TO THE OTHER THROUGH A LIMITED PRIMARY STROKE UPON APPLICATION OF AN AXIAL COMPRESSIVE THRUST TO SAID MEMBERS, AND YIELDING MEANS FIXED WITH RESPECT TO ONE OF SAID MEMBERS AND ENGAGING THE OTHER OF SAID MEMBERS TO YIELDINGLY RESIST SAID RELATIVE ROTATION AND AFTER SAID RELATIVE ROTATION TO BIAS SAID MEMBERS TO AN INITIAL POSITION OF RELATIVE ROTATION, THE BIAS EXERTED BY SAID YIELDING MEANS BEING INEFFECTIVE TO OVERCOME THE RESISTANCE OF SAID HOLDING MEANS, A SECONDARY AXIAL TO LIMIT ROTARY MOTION CONVERSION MEANS INCLUDING A THIRD MEMBER NORMALLY SPACED AXIALLY FROM SAID SECOND MEMBER, AND MEANS INCLUDING COOPERATING AXIALLY FACING PORTIONS OF SAID SECOND AND THIRD MEMBERS OPERABLE UPON APPLICATION OF AN AXIAL COMPRESSIVE OPERABLE UPON APPLICATION THIRD MEMBERS TO ROTATE ONE OF SAID SECOND AND THIRD MEMBERS RELATIVE TO ANOTHER THROUGH A SECONDARY ROTARY STROKE ABOUT SAID ROTARY AXIS, MEANS TO ATTACH SAID LOAD TO ONE OF SAID FIRST AND THIRD MEMBERS, MEANS TO ENGAGE SAID HOLDING MEANS WITH THE OTHER OF SAID FIRST AND THIRD MEMBERS, AND MOTIVE MEANS TO APPLY AN AXIAL COMPRESSIVE THRUST SIMULTANEOUSLY TO SAID PRIMARY AND SECONDARY CONVERSION MEANS AND EFFECTIVE TO OVERPOWER SAID HOLDING MEANS TO PRODUCE A NET RELATIVE ROTATION BETWEEN SAID FIRST AND THIRD MEMBERS EQUAL TO THE ALGEBRAIC SUM OF SAID PRIMARY AND SECONDARY STROKES, SAID YIELDING MEANS ACTING UPON RELAXATION OF SAIS AXIAL THRUST TO RETURN SAID ONE OF SAID FIRST AND SECOND MEMBERS TO SAID INITIAL POSITION RELATIVE TO THE OTHER OF SAID FIRST AND SECOND MEMBERS.
Claim 2
Dependent Claim
324 words
A ROTARY ACTUATOR FOR IMPARTING ROTARY MOVEMENT TO A LOAD INCLUDING HOLDING MEANS TO NORMALLY RESIST ROTARY MOVEMENT OF SAID LOAD EXCEPT BY SAID CATURATOR COMPRISING, IN COMBINATION, A PRIMARY AXIAL TO LIMITED ROTARY MOTION CONVERSION MECHANISM INCLUDING FIRST AND SECOND MEMBERS RELATIVELY ROTATABLE ABOUT A ROTARY AXIS, SAID MEMBERS HAVING RELATIVE MOVEMENT ALONG SAID AXIS AND HAVING AXIALLY FACING SURFACES, MEANS INCLUDING SAID AXIALLY FACING SURFACES TO ROTATE ONE OF SAID MEMBERS RELATIVE TO THE OTHER THROUGH A LIMITED PRIMARY STROKE UPON APPLICATION OF AN AXIAL COMPRESSIVE THRUST TO SAID MEMBERS, AND YIELDING MEANS FIXED WITH RESPECT TO ONE OF SAID MEMBERS AND ENGAGING THE OTHER OF SAID MEMBERS TO YIELDINGLY RESIST SAID RELATIVE ROTATION AND AFTER SAID RELATIVE ROTATION TO BIAS SAID MEMBERS TO AN INITIAL POSITION OF RELATIVE ROTATION, THE BIAS EXERTED BY SAID YIELDING MEANS BEING INEFFECTIVE TO OVERCOME THE RESISTANCE OF SAID HOLDING MEANS, A SECONDARY AXIAL TO LIMIT ROTARY MOTION CONVERSION MEANS INCLUDING A THIRD MEMBER NORMALLY SPACED AXIALLY FROM SAID SECOND MEMBER, AND MEANS INCLUDING COOPERATING AXIALLY FACING PORTIONS OF SAID SECOND AND THIRD MEMBERS OPERABLE UPON APPLICATION OF AN AXIAL COMPRESSIVE OPERABLE UPON APPLICATION THIRD MEMBERS TO ROTATE ONE OF SAID SECOND AND THIRD MEMBERS RELATIVE TO ANOTHER THROUGH A SECONDARY ROTARY STROKE ABOUT SAID ROTARY AXIS, MEANS TO ATTACH SAID LOAD TO ONE OF SAID FIRST AND THIRD MEMBERS, MEANS TO ENGAGE SAID HOLDING MEANS WITH THE OTHER OF SAID FIRST AND THIRD MEMBERS, AND MOTIVE MEANS TO APPLY AN AXIAL COMPRESSIVE THRUST SIMULTANEOUSLY TO SAID PRIMARY AND SECONDARY CONVERSION MEANS AND EFFECTIVE TO OVERPOWER SAID HOLDING MEANS TO PRODUCE A NET RELATIVE ROTATION BETWEEN SAID FIRST AND THIRD MEMBERS EQUAL TO THE ALGEBRAIC SUM OF SAID PRIMARY AND SECONDARY STROKES, SAID YIELDING MEANS ACTING UPON RELAXATION OF SAIS AXIAL THRUST TO RETURN SAID ONE OF SAID FIRST AND SECOND MEMBERS TO SAID INITIAL POSITION RELATIVE TO THE OTHER OF SAID FIRST AND SECOND MEMBERS.
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) | 1970-05-22 | 1970-11-21 | 1971-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-05-22 | 1974-11-21 | 1975-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-05-22 | 1978-11-21 | 1979-05-23 | $7700.00 | Window Closed / Lapsed |