Patent US3582697A successfully refreshed from Google Patents.
US3582697A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combination motor-clutch apparatus
Assignee: General Electric Co
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Filing: 1970-01-28
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Granted: 1971-06-01
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Expires: 1990-01-28
Abstract
Abstract A combination motor-clutch apparatus in which an electrically operated clutch is arranged in an integral assembly with a driving motor. The control member of the clutch comprises an electromagnetic coil which induces a magnetic field for bringing the clutching surfaces into operative engagement. The coil is mounted on an end shield of the motor by means of tabs which are pierced out of the end shield. The tabs additionally serve as a flux path for passing the magnetic field of the coil to the movable clutch means, while the openings in the end shield created by the formation of the tabs provide a means for cooling airflow to pass through the clutch and the motor.
Inventors
- 👤 John Bochan
- 👤 Robert M Fey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 08:13
CPC Classifications
H; H02; H02K; H02K7/00; H02K7/10; H02K7/108; H02K7/1085
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
257 words
A combination motor-clutch assembly comprising: a. an electric motor having a rotor, a stator, a rotatable shaft mounting said rotor, and at least one end shield carrying bearing means for said shaft; b. an electric clutch having a clutch input member driven from said shaft, a clutch output member mounted around said shaft and rotatable with respect to said shaft, and an electromagnetic coil for inducing a magnetic field to bring said input member and said output member into operative engagement, at least one of said clutch members being axially movable to effect such engagement; c. said clutch being positioned around said shaft adjacent said end shield of said motor, and said end shield having coil mounting means formed integrally therewith for supporting said electromagnetic coil of said clutch; and d. said coil mounting means comprising a plurality of upstanding tabs formed on the outer surface of said one end shield and projecting toward said clutch members, said tabs being arranged in two radially spaced annular rows to form an interrupted recess accommodating said coil and including transversely extending outer tips aiding in the magnetic coupling to the axially movable clutch member so that said coil mounting means also serves as a flux path for the magnetic field produced by said coil to pass said flux to the axially movable clutch member; e. whereby an integral assembly is provided in which said one end shield acts as a magnetic path in the electric clutch as well as a structural part of both the motor and the clutch.
Claim 2
Dependent Claim
257 words
A combination motor-clutch assembly comprising: a. an electric motor having a rotor, a stator, a rotatable shaft mounting said rotor, and at least one end shield carrying bearing means for said shaft; b. an electric clutch having a clutch input member driven from said shaft, a clutch output member mounted around said shaft and rotatable with respect to said shaft, and an electromagnetic coil for inducing a magnetic field to bring said input member and said output member into operative engagement, at least one of said clutch members being axially movable to effect such engagement; c. said clutch being positioned around said shaft adjacent said end shield of said motor, and said end shield having coil mounting means formed integrally therewith for supporting said electromagnetic coil of said clutch; and d. said coil mounting means comprising a plurality of upstanding tabs formed on the outer surface of said one end shield and projecting toward said clutch members, said tabs being arranged in two radially spaced annular rows to form an interrupted recess accommodating said coil and including transversely extending outer tips aiding in the magnetic coupling to the axially movable clutch member so that said coil mounting means also serves as a flux path for the magnetic field produced by said coil to pass said flux to the axially movable clutch member; e. whereby an integral assembly is provided in which said one end shield acts as a magnetic path in the electric clutch as well as a structural part of both the motor and the clutch.
Claim 3
Dependent Claim
42 words
The motor clutch assembly of claim 1 in which at least a portion of said tabs are located on the radially inward side of said coil and are formed out of said end shield to provide airflow openings through said end shield.
Claim 4
Dependent Claim
244 words
A combination motor-clutch assembly comprising: a. an electric motor having a rotor, a stator a rotatable shaft mounting said rotor, and at least one end shield carrying bearing means for said shaft; b. an electric clutch having a clutch input member driven from said shaft, a clutch output member moUnted around said shaft and rotatable with respect to said shaft, and an electromagnetic coil for inducing a magnetic field to bring said input member and said output member into operative engagement, said clutch output member being axially movable relative to said clutch input member for engagement therewith, said output member being operatively connected to a driven member, said driven member being rotatably mounted on said rotatable shaft for free rotation with respect to said shaft and comprising an output pulley, said clutch output member being mounted on said pulley by a plurality of leaf springs; c. said clutch being positioned around said shaft adjacent said end shield of said motor, and said end shield having coil mounting means formed integrally therewith for supporting said electromagnetic coil of said clutch; and d. said coil mounting means also serving as a flux path for the magnetic field produced by said coil to pass said flux to the axially movable clutch member; e. whereby an integral assembly is provided in which said one end shield acts as a magnetic path in the electric clutch as well as a structural part of both the motor and the clutch.
Claim 5
Dependent Claim
244 words
A combination motor-clutch assembly comprising: a. an electric motor having a rotor, a stator a rotatable shaft mounting said rotor, and at least one end shield carrying bearing means for said shaft; b. an electric clutch having a clutch input member driven from said shaft, a clutch output member moUnted around said shaft and rotatable with respect to said shaft, and an electromagnetic coil for inducing a magnetic field to bring said input member and said output member into operative engagement, said clutch output member being axially movable relative to said clutch input member for engagement therewith, said output member being operatively connected to a driven member, said driven member being rotatably mounted on said rotatable shaft for free rotation with respect to said shaft and comprising an output pulley, said clutch output member being mounted on said pulley by a plurality of leaf springs; c. said clutch being positioned around said shaft adjacent said end shield of said motor, and said end shield having coil mounting means formed integrally therewith for supporting said electromagnetic coil of said clutch; and d. said coil mounting means also serving as a flux path for the magnetic field produced by said coil to pass said flux to the axially movable clutch member; e. whereby an integral assembly is provided in which said one end shield acts as a magnetic path in the electric clutch as well as a structural part of both the motor and the clutch.
Claim 6
Dependent Claim
102 words
In a motor-clutch assembly including an electric driving motor, and an electrically controlled driven clutch having an axially movable clutch element and an electromagnetic operating coil, means for mounting said coil integrally with said motor comprising: a plurality of tabs formed on one end shield of said motor, said tabs being arranged in two radially spaced rows to form an annular recess for receiving and holding said coil, and said tabs being pierced out of said end shield to form airflow openings therethrough and extending toward said movable clutch element to form a flux path between said coil and said clutch element.
Claim 7
Dependent Claim
102 words
In a motor-clutch assembly including an electric driving motor, and an electrically controlled driven clutch having an axially movable clutch element and an electromagnetic operating coil, means for mounting said coil integrally with said motor comprising: a plurality of tabs formed on one end shield of said motor, said tabs being arranged in two radially spaced rows to form an annular recess for receiving and holding said coil, and said tabs being pierced out of said end shield to form airflow openings therethrough and extending toward said movable clutch element to form a flux path between said coil and said clutch element.
Claim 8
Dependent Claim
30 words
The apparatus of claim 4 in which said tabs include transversely extending tips at their outer ends to aid in the magnetic effect of said coil on said clutch member.
References Cited (Backward Citations)
US1459358A
Cited
US3448308A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-05-31 | 1974-11-30 | 1975-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-31 | 1978-11-30 | 1979-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-31 | 1982-11-30 | 1983-06-01 | $7700.00 | Window Closed / Lapsed |