Patent US3681550A successfully refreshed from Google Patents.
US3681550A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Motor switch arrangement
Assignee: Dutton Lainson Co
•
Filing: 1971-07-30
•
Granted: 1972-08-01
•
Expires: 1991-07-30
Abstract
Abstract A direct current motor is provided with a switch which may be rotated in opposite directions to control the direction of operation of the motor. Power is supplied to the split ring commutator of the motor by means of spring-biased brushes passing through openings in an insulating plate positioned between the commutator and the brushes. Rotation of the brushes over the surface of the insulating plate will effect a change in the position of the brushes through the openings in the plate and will thus effect a reversal in the operation of the motor.
Inventors
- 👤 Max W Perry
- 👤 Norman D Brockelsby
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 13:51
CPC Classifications
H; H02; H02K; H02K23/00; H02K23/02; H02K23/18; H01; H01H; H01H27/00; H01H27/04; H01R; H01R39/00; H01R39/02; H01R39/04; H01R39/06; H01R39/44
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
183 words
An improved means for reversing current supply to a split commutator ring of a direct current motor, said ring having a spin axis comprising, in combination, first contact means for connection to electric supply means of one polarity, second contact means for connection to electric supply means of another polarity, a rotatable mounting plate for said contact means, said plate being mounted for rotation about the spin axis of said commutator ring, said plate including means for mounting said contact means and means for maintaining said contact means in substantial contact with said ring, and an insulating plate positioned between said contact means and said ring, said insulating plate including openings for said contact means, said contact means fitting within and through said openings to be in contact with said ring, said openings being separated by contact paths to break the electric connection between said contact means and said ring by rotation of said mounting plate such that a reversing current supply is effected by rotating said contact means from an original position through said openings to a second position through said openings.
Claim 2
Dependent Claim
183 words
An improved means for reversing current supply to a split commutator ring of a direct current motor, said ring having a spin axis comprising, in combination, first contact means for connection to electric supply means of one polarity, second contact means for connection to electric supply means of another polarity, a rotatable mounting plate for said contact means, said plate being mounted for rotation about the spin axis of said commutator ring, said plate including means for mounting said contact means and means for maintaining said contact means in substantial contact with said ring, and an insulating plate positioned between said contact means and said ring, said insulating plate including openings for said contact means, said contact means fitting within and through said openings to be in contact with said ring, said openings being separated by contact paths to break the electric connection between said contact means and said ring by rotation of said mounting plate such that a reversing current supply is effected by rotating said contact means from an original position through said openings to a second position through said openings.
Claim 3
Dependent Claim
19 words
The improved device of claim 1 wherein said contact means comprise a plurality of brushes biased against said ring.
Claim 4
Dependent Claim
56 words
The improved device of claim 1 wherein said rotatable mounting plate is normally maintained by biasing means in a rotatable position with said contact means out of contact with said ring, said plate being rotated against the force of said biasing means whenever said contact means are brought into contact with said ring through said openings.
Claim 5
Dependent Claim
48 words
The device of claim 1 wherein said insulating plate includes four openings arranged at substantially 90* intervals at substantially the same radial distance from said spin axis and wherein said contact means comprise four contact means, each contact means adapted to fit through at least two adjacent openings.
Claim 6
Dependent Claim
26 words
The device of claim 1 wherein said contact paths of said insulating plate include inclined surfaces tapered from adjacent said ring outward away from said ring.
Claim 7
Dependent Claim
155 words
In an electrically powered device having means to provide electric power to said device to operate said device in either of two modes, said means to provide power including first and second contact means for contacting a rotating electrically driven means, the improvement comprising switch means for said contact means to switch said contact means from a first contact position with said driven means to a second contact position with said driven means to change the mode of operation of said device, said switch means including brush means mounted for rotation about an axis, said switch means also including plate means adjacent said brush means, said plate means including openings for said brush means through which said brush means extend for contact with said driven means in said first position, said brush means rotatable about said axis for transfer of said brush means to contact said driven means through said openings in said second position.
Claim 8
Dependent Claim
155 words
In an electrically powered device having means to provide electric power to said device to operate said device in either of two modes, said means to provide power including first and second contact means for contacting a rotating electrically driven means, the improvement comprising switch means for said contact means to switch said contact means from a first contact position with said driven means to a second contact position with said driven means to change the mode of operation of said device, said switch means including brush means mounted for rotation about an axis, said switch means also including plate means adjacent said brush means, said plate means including openings for said brush means through which said brush means extend for contact with said driven means in said first position, said brush means rotatable about said axis for transfer of said brush means to contact said driven means through said openings in said second position.
Claim 9
Dependent Claim
113 words
A motor switch arrangement for operating a motor in at least two modes comprising, in combination: a commutator for said motor, contact means for said commutator, means for providing current to said contact means, insulation means positioned intermediate said contact means and said commutator, said insulation means including apertures therethrough for said contact means to make electrical connection with said commutator in a first position for operation in one mode and apertures therethrough for said contact means to make electrical connection with said commutator in a second position to operate said motor in another mode, and means for positioning said contact means through said apertures for said one mode or said another mode.
Claim 10
Dependent Claim
113 words
A motor switch arrangement for operating a motor in at least two modes comprising, in combination: a commutator for said motor, contact means for said commutator, means for providing current to said contact means, insulation means positioned intermediate said contact means and said commutator, said insulation means including apertures therethrough for said contact means to make electrical connection with said commutator in a first position for operation in one mode and apertures therethrough for said contact means to make electrical connection with said commutator in a second position to operate said motor in another mode, and means for positioning said contact means through said apertures for said one mode or said another mode.
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) | 1975-08-01 | 1976-01-31 | 1976-08-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-01 | 1980-01-31 | 1980-08-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-01 | 1984-01-31 | 1984-08-01 | $7700.00 | Window Closed / Lapsed |