Patent US2667435A successfully refreshed from Google Patents.
Patent US3594741A successfully refreshed from Google Patents.
US3594741A
Expired / Lapsed
US
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Electromechanical transducer
Assignee: Bendix Corp
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Filing: 1968-05-29
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Granted: 1971-07-20
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Expires: 1988-05-29
Abstract
Abstract An electromechanical transducer comprising a sealed error sensor and followup device having two concentric separately rotatable assemblies constructed to generate an electrical output signal only when one assembly is rotated relative to the other from a predetermined null or neutral position by a wind vane or comparable means. A servomotor is energized in response to the output signal and drives said other assembly through a gear train to cause it to followup and duplicate said relative movement to thus reestablish the null position relationship of the two assemblies. The servomotor may also drive potentiometers, synchros or the like an amount proportional to the movement of said assemblies from a predetermined reference position.
Inventors
- 👤 Victor D Ellison
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 06:22
CPC Classifications
B; B64; B64D; B64D43/00; B64D43/02; G; G01; G01P; G01P13/00; G01P13/02; G01P13/025; G05; G05D; G05D3/00; G05D3/12; G05D3/14; G05D3/1418
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
148 words
An electromechanical transducer comprising rotatably mounted first means, second means rotatably mounted on said first means and having a predetermined null position relative thereto, a servomotor, means drivably connecting said motor and said first means, means responsive to angular movement of one of said first and second means relative to the other from said null position to energize said motor for rotatably driving said first means relative to said second means toward said null position, whereby said first means is caused to follow the angular movements of said second means, and cooperating means on said first and second means for limiting to a few degrees the extent of angular movement of said second means from said null position in either direction relative to said first means, said motor being operative to thus drive said first means whenever said first and second means are out of null position relation.
Claim 2
Dependent Claim
148 words
An electromechanical transducer comprising rotatably mounted first means, second means rotatably mounted on said first means and having a predetermined null position relative thereto, a servomotor, means drivably connecting said motor and said first means, means responsive to angular movement of one of said first and second means relative to the other from said null position to energize said motor for rotatably driving said first means relative to said second means toward said null position, whereby said first means is caused to follow the angular movements of said second means, and cooperating means on said first and second means for limiting to a few degrees the extent of angular movement of said second means from said null position in either direction relative to said first means, said motor being operative to thus drive said first means whenever said first and second means are out of null position relation.
Claim 3
Dependent Claim
36 words
A transducer as defined in claim 1 wherein said means responsive to angular movement of said second means from said null position comprises electromechanical means including coils on only one of said first and second means.
Claim 4
Dependent Claim
148 words
An electromechanical transducer comprising rotatably mounted first means, second means rotatably mounted on said first means and having a predetermined null position relative thereto, a servomotor, means drivably connecting said motor and said first means, means responsive to angular movement of one of said first and second means relative to the other from said null position to energize said motor for rotatably driving said first means relative to said second means toward said null position, whereby said first means is caused to follow the angular movements of said second means, and an annular seal between said first and second means, said seal comprising a ring of impermeable flexible material having its inner and outer peripheral edge portions each secured to one of said first and second means, whereby to form an annular barrier and permit limited relative angular movement of said first and second means in either direction.
Claim 5
Dependent Claim
148 words
An electromechanical transducer comprising rotatably mounted first means, second means rotatably mounted on said first means and having a predetermined null position relative thereto, a servomotor, means drivably connecting said motor and said first means, means responsive to angular movement of one of said first and second means relative to the other from said null position to energize said motor for rotatably driving said first means relative to said second means toward said null position, whereby said first means is caused to follow the angular movements of said second means, and an annular seal between said first and second means, said seal comprising a ring of impermeable flexible material having its inner and outer peripheral edge portions each secured to one of said first and second means, whereby to form an annular barrier and permit limited relative angular movement of said first and second means in either direction.
Claim 6
Dependent Claim
15 words
A transducer as defined in claim 1 wherein the material of said ring is elastomeric.
Claim 7
Dependent Claim
28 words
A transducer as defined in claim 3 comprising cooperating means on said first and second means for positively limiting relative angular movement of said first and second means.
Claim 8
Dependent Claim
91 words
A transducer as defined in claim 1 wherein one of said first and second means includes a magnetic metal core having a plurality of circumferentially spaced poles and windings on said poles connected in series across an AC source of electrical energy and the other of said first and second means is constituted by a magnetic flux conducting member constructed to vary the distribution of magnetic flux through said poles whereby the output of said windings is varied upon angular dIsplacement of said first or second means from said null position.
Claim 9
Dependent Claim
42 words
A transducer as defined in claim 6 comprising secondary windings on said poles connected in series opposition so as to nullify the induction of current therein by said first named windings when said first and second means are in said null position.
Claim 10
Dependent Claim
122 words
Motion-transmitting apparatus comprising a rotatable first assembly, a second assembly rotatable on and having a predetermined registry position relative to said first assembly, means for limiting relative angular movement of said assemblies, said assemblies comprising cooperable electromagnetic means for generating an electrical output signal when one of said assemblies moves angularly out of said registry position with the other said assembly, means responsive to said output signal for causing said other assembly to follow the angular movements of said one assembly to restore said registry position of the assemblies, and impermeable means forming an annular seal across the annular clearance space between said assemblies, said impermeable means having an annular portion thereof secured to each of said assemblies for angular movement therewith.
Claim 11
Dependent Claim
122 words
Motion-transmitting apparatus comprising a rotatable first assembly, a second assembly rotatable on and having a predetermined registry position relative to said first assembly, means for limiting relative angular movement of said assemblies, said assemblies comprising cooperable electromagnetic means for generating an electrical output signal when one of said assemblies moves angularly out of said registry position with the other said assembly, means responsive to said output signal for causing said other assembly to follow the angular movements of said one assembly to restore said registry position of the assemblies, and impermeable means forming an annular seal across the annular clearance space between said assemblies, said impermeable means having an annular portion thereof secured to each of said assemblies for angular movement therewith.
Claim 12
Dependent Claim
31 words
Apparatus as defined in claim 8 wherein said impermeable means is a ring of sheetlike elastomeric material having the inner and outer peripheral margins thereof each annularly cemented to said assembly.
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) | 1974-07-19 | 1975-01-18 | 1975-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-19 | 1979-01-18 | 1979-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-19 | 1983-01-18 | 1983-07-20 | $7700.00 | Window Closed / Lapsed |