Patent US3743872A successfully refreshed from Google Patents.
US3743872A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dynamoelectric machines and assembly of same with a control device
Assignee: General Electric Co
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Filing: 1972-02-07
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Granted: 1973-07-03
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Expires: 1992-02-07
Abstract
Abstract Assembly of a device such as a timer particularly adapted for controlling the defrost cycle of a refrigerator, and an electric motor that may be used, e.g., to drive an evaporator or condenser cooling fan. Control device and motor detachably secured and magnetically coupled to one another. Speed reducing gear train is mechanically driven from the control device input member and a switch actuator cam cyclically causes selective opening and closing of switch contacts. Control device may be enclosed to prevent the admission of foreign matter. Unit bearing type of motor includes a polarized magnetic body that forms part of the rotor assembly and is rotatable within a lubricant reservoir of the motor. Oil reservoir cover is formed of a non-ferromagnetic material. The polarized magnetic body establishes a magnetic field that extends beyond the confines of the motor and causes similar movement of a polarized magnetic body in the control device. The control device and motor are modular units and may be manufactured and transported as individually complete or assembled components.
Inventors
- 👤 R Dochterman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:27
CPC Classifications
H; H02; H02K; H02K7/00; H02K7/10; H02K7/11; F; F25; F25D; F25D21/00; F25D21/002; F25D21/004; H02K5/00; H02K5/04; H02K5/16; H02K5/167; H02K5/1675
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
158 words
A dynamoelectric machine and control device assembly; said dynamoelectric machine including a magnetic stator core, bearing means for supporting a rotor assembly for rotation relative to the magnetic stator core, a lubricant reservoir for supplying lubricant to at least part of the bearing means, and a rotor assembly including a first polarized body of magnetic material; said control device including a plurality of members having gear teeth and arranged in speed reducing relationship, and driven output means and driven input means coupled in a speed reducing arrangement by the plurality of members; said driven input means including at least one second polarized body of magnetic material magnetically coupled with the first polarized body of magnetic material so that movement of a magnetic field associated with the first polarized body of magnetic material causes corresponding movement of the at least one second polarized magnetic body whereby the control device is operated in response to operation of the dynamoelectric machine.
Claim 2
Dependent Claim
158 words
A dynamoelectric machine and control device assembly; said dynamoelectric machine including a magnetic stator core, bearing means for supporting a rotor assembly for rotation relative to the magnetic stator core, a lubricant reservoir for supplying lubricant to at least part of the bearing means, and a rotor assembly including a first polarized body of magnetic material; said control device including a plurality of members having gear teeth and arranged in speed reducing relationship, and driven output means and driven input means coupled in a speed reducing arrangement by the plurality of members; said driven input means including at least one second polarized body of magnetic material magnetically coupled with the first polarized body of magnetic material so that movement of a magnetic field associated with the first polarized body of magnetic material causes corresponding movement of the at least one second polarized magnetic body whereby the control device is operated in response to operation of the dynamoelectric machine.
Claim 3
Dependent Claim
184 words
A dynamoelectric machine and control device assembly; said dynamoelectric machine including a magnetic stator core, bearing means for supporting a rotor assembly for rotation relative to the magnetic stator core, a lubricant reservoir for supplying lubricant to at least part of the bearing means, and a rotor assembly including a first polarized body of magnetic material; said control device including driven output means and driven input means coupled in a speed reducing arrangement, said driven input means including at least one second polarized body of magnetic material magnetically coupled with the first polarized body of magnetic material so that movement of a magnetic field associated with the first polarized body of magnetic material causes corresponding movement of the at least one second polarized magnetic body whereby the control device is operated in response to operation of the dynamoelectric machine; and said assembly further comprising a lubricant loss preventing member disposed between the magnetically coupled first and second polarized bodies of magnetic material thereby to prevent loss of lubricant from the lubricant reservoir, and transfer of lubricant from the lubricant reservoir to the control device.
Claim 4
Dependent Claim
184 words
A dynamoelectric machine and control device assembly; said dynamoelectric machine including a magnetic stator core, bearing means for supporting a rotor assembly for rotation relative to the magnetic stator core, a lubricant reservoir for supplying lubricant to at least part of the bearing means, and a rotor assembly including a first polarized body of magnetic material; said control device including driven output means and driven input means coupled in a speed reducing arrangement, said driven input means including at least one second polarized body of magnetic material magnetically coupled with the first polarized body of magnetic material so that movement of a magnetic field associated with the first polarized body of magnetic material causes corresponding movement of the at least one second polarized magnetic body whereby the control device is operated in response to operation of the dynamoelectric machine; and said assembly further comprising a lubricant loss preventing member disposed between the magnetically coupled first and second polarized bodies of magnetic material thereby to prevent loss of lubricant from the lubricant reservoir, and transfer of lubricant from the lubricant reservoir to the control device.
Claim 5
Dependent Claim
168 words
An electric motor and control device assembly; said electric motor including a magnetic stator core, a rotor assembly including a shaft, bearing means for supporting the rotor assembly for rotation relative to the magnetic stator core, first power transfer means comprising a first portion of the shaft extending from the motor and second power transfer means including a first polarized body of magnetic material supported for movement relative to the stator core and driven by a second portion of the shaft so as to be movable in response to movement of the rotor assembly; said control device including gear means and driven input means interconnected with the gear means; said driven input means comprising at least one second polarized body of magnetic material magnetically coupled with the first polarized body of magnetic material so that movement of a magnetic field associated with the first polarized body of magnetic material causes corresponding movement of the at least one second polarized magnetic body and associated movement of said gear means.
Claim 6
Dependent Claim
168 words
An electric motor and control device assembly; said electric motor including a magnetic stator core, a rotor assembly including a shaft, bearing means for supporting the rotor assembly for rotation relative to the magnetic stator core, first power transfer means comprising a first portion of the shaft extending from the motor and second power transfer means including a first polarized body of magnetic material supported for movement relative to the stator core and driven by a second portion of the shaft so as to be movable in response to movement of the rotor assembly; said control device including gear means and driven input means interconnected with the gear means; said driven input means comprising at least one second polarized body of magnetic material magnetically coupled with the first polarized body of magnetic material so that movement of a magnetic field associated with the first polarized body of magnetic material causes corresponding movement of the at least one second polarized magnetic body and associated movement of said gear means.
Claim 7
Dependent Claim
162 words
An electric motor and control device assembly; said electric motor including a magnetic stator core, a rotor assembly, bearing means for supporting the rotor assembly adjacent at least one end thereof for rotation relative to the magnetic stator core, first power transfer means comprising a portion of a shaft extending from the motor and second power transfer means including a first polarized body of permanently magnetized material located outboard of the bearing means and supported for movement relative to the stator core and movable in response to movement of the rotor assembly, and a bearing lubricant loss preventing member positioned outboard of the first polarized body ; said control device including driven input means comprising at least one second polarized body of permanently magnetized material magnetically coupled with the first polarized body of magnetized material so that movement of a magnetic field associated with the first polarized body of magnetized material causes corresponding movement of the at least one second polarized body.
Claim 8
Dependent Claim
162 words
An electric motor and control device assembly; said electric motor including a magnetic stator core, a rotor assembly, bearing means for supporting the rotor assembly adjacent at least one end thereof for rotation relative to the magnetic stator core, first power transfer means comprising a portion of a shaft extending from the motor and second power transfer means including a first polarized body of permanently magnetized material located outboard of the bearing means and supported for movement relative to the stator core and movable in response to movement of the rotor assembly, and a bearing lubricant loss preventing member positioned outboard of the first polarized body ; said control device including driven input means comprising at least one second polarized body of permanently magnetized material magnetically coupled with the first polarized body of magnetized material so that movement of a magnetic field associated with the first polarized body of magnetized material causes corresponding movement of the at least one second polarized body.
Claim 9
Dependent Claim
17 words
The assembly of claim 4 wherein a ferromagnetic member is positioned adjacent to the first polarized body.
Claim 10
Dependent Claim
192 words
A dynamoelectric machine comprising a stator assembly; a rotor assembly including shaft means; bearing means supporting the rotor assembly for rotation relative to the stator assembly; a lubricant reservoir in communication with at least part of the bearing means; and a lubricant reservoir cover secured to the stator assembly to substantially prevent inadvertent loss of lubricant from the lubricant reservoir; said rotor assembly including at least two separate power transfer means; a first one of the power transfer means comprising a first portion of the shaft means accessible from the exterior of the stator assembly for connection with a first preselected power transmitting member; and a second one of the power transfer means comprising a polarized body of magnetic material located between the bearing means and the lubricant reservoir cover; at least a portion of the lubricant reservoir cover in proximity with the polarized body being formed of a nonmagnetic material whereby moving lines of magnetic flux associated with movement of the polarized body of magnetic material may be utilized for moving another polarized body of magnetic material associated with a control device supported in fixed relationship relative to the stator assembly.
Claim 11
Dependent Claim
192 words
A dynamoelectric machine comprising a stator assembly; a rotor assembly including shaft means; bearing means supporting the rotor assembly for rotation relative to the stator assembly; a lubricant reservoir in communication with at least part of the bearing means; and a lubricant reservoir cover secured to the stator assembly to substantially prevent inadvertent loss of lubricant from the lubricant reservoir; said rotor assembly including at least two separate power transfer means; a first one of the power transfer means comprising a first portion of the shaft means accessible from the exterior of the stator assembly for connection with a first preselected power transmitting member; and a second one of the power transfer means comprising a polarized body of magnetic material located between the bearing means and the lubricant reservoir cover; at least a portion of the lubricant reservoir cover in proximity with the polarized body being formed of a nonmagnetic material whereby moving lines of magnetic flux associated with movement of the polarized body of magnetic material may be utilized for moving another polarized body of magnetic material associated with a control device supported in fixed relationship relative to the stator assembly.
Claim 12
Dependent Claim
21 words
The dynamoelectric machine of claim 6 wherein a ferromagnetic member is positioned closely adjacent to the polarized body of magnetic material.
Claim 13
Dependent Claim
143 words
An electric motor including a stator assembly; bearing means supporting a rotor assembly for movement relative to the stator assembly; first movable power transfer means comprising at least a part of the rotor assembly accessible from the exterior of the stator assembly; and second movable power transfer means comprising a polarized body of magnetic material movable in predetermined relationship with the first movable power transfer means; said first power transfer means being adapted for mechanically coupling the rotor assembly and first driven means and said second power transfer means being movable concurrently with the first power transfer means whereby second driven means may be magnetically coupled therewith and driven thereby; said motor having at least one bearing and further including a protective cover that overlies the polarized body of magnetic material, said protective cover substantially preventing loss of bearing lubricant from the motor.
Claim 14
Dependent Claim
143 words
An electric motor including a stator assembly; bearing means supporting a rotor assembly for movement relative to the stator assembly; first movable power transfer means comprising at least a part of the rotor assembly accessible from the exterior of the stator assembly; and second movable power transfer means comprising a polarized body of magnetic material movable in predetermined relationship with the first movable power transfer means; said first power transfer means being adapted for mechanically coupling the rotor assembly and first driven means and said second power transfer means being movable concurrently with the first power transfer means whereby second driven means may be magnetically coupled therewith and driven thereby; said motor having at least one bearing and further including a protective cover that overlies the polarized body of magnetic material, said protective cover substantially preventing loss of bearing lubricant from the motor.
Claim 15
Dependent Claim
141 words
An electric motor of the unit bearing type, including a stator; bearing means supporting a rotor assembly for movement relative to the stator; first movable power transfer means comprising at least a part of the rotor assembly accessible from the exterior of the stator; and second movable power transfer means comprising a polarized body of magnetic material movable in predetermined relationship with the first movable power transfer means; said first power transfer means being adapted for mechanically coupling the rotor assembly and first driven means and said second power transfer means being movable concurrently with the first power transfer means whereby second driven means may be magnetically coupled therewith and driven thereby; the electric motor further including a protective cover that overlies the polarized body of magnetic material, said protective cover substantially preventing loss of bearing means lubricant from the motor.
Claim 16
Dependent Claim
141 words
An electric motor of the unit bearing type, including a stator; bearing means supporting a rotor assembly for movement relative to the stator; first movable power transfer means comprising at least a part of the rotor assembly accessible from the exterior of the stator; and second movable power transfer means comprising a polarized body of magnetic material movable in predetermined relationship with the first movable power transfer means; said first power transfer means being adapted for mechanically coupling the rotor assembly and first driven means and said second power transfer means being movable concurrently with the first power transfer means whereby second driven means may be magnetically coupled therewith and driven thereby; the electric motor further including a protective cover that overlies the polarized body of magnetic material, said protective cover substantially preventing loss of bearing means lubricant from the motor.
Claim 17
Dependent Claim
64 words
The structure of claim 8 wherein the first power transfer means comprises a portion of shaft adapted for connection with a fluid material moving element and the second power transfer meanS comprises at least one permanent magnet concealed within the motor whereby the motor may be used as a power module for concurrently moving a fluid material and driving a device magnetically coupled therewith.
Claim 18
Dependent Claim
142 words
A timing control device for use in controlling the initiation of at least one predetermined operational sequence of an appliance at least approximately in response to a cumulative number of revolutions of a fluid medium moving electric motor, said device including a housing; power input means including at least one polarized body of magnetic material; and power output means including an output shaft drivingly coupled with said power input means; said polarized body of magnetic material being movably supported and positioned within said housing to facilitate magnetic coupling between said polarized body of magnetic material and another polarized body of magnetic material driven by the fluid medium moving electric motor to thereby permit the use of a fluid medium moving motor for driving said device when the housing is supported in fixed operative relationship relative to the fluid medium moving electric motor.
Claim 19
Dependent Claim
142 words
A timing control device for use in controlling the initiation of at least one predetermined operational sequence of an appliance at least approximately in response to a cumulative number of revolutions of a fluid medium moving electric motor, said device including a housing; power input means including at least one polarized body of magnetic material; and power output means including an output shaft drivingly coupled with said power input means; said polarized body of magnetic material being movably supported and positioned within said housing to facilitate magnetic coupling between said polarized body of magnetic material and another polarized body of magnetic material driven by the fluid medium moving electric motor to thereby permit the use of a fluid medium moving motor for driving said device when the housing is supported in fixed operative relationship relative to the fluid medium moving electric motor.
Claim 20
Dependent Claim
30 words
The structure of claim 11 wherein the timing control device further includes a ferromagnetic member positioned closely adjacent to and fastened for movement with the at least one polarized body.
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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) | 1976-07-02 | 1977-01-01 | 1977-07-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-02 | 1981-01-01 | 1981-07-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-02 | 1985-01-01 | 1985-07-03 | $7700.00 | Window Closed / Lapsed |