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US3962593A Expired / Lapsed US ⏱️ 0.0 years remaining

Electromagnetic motor

Assignee: BDH Inc
•
Filing: 1975-04-01
•
Granted: 1976-06-08
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Expires: 1995-04-01
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Abstract

Abstract An electromagnetic impulse motor having a stator and a rotor arranged for rotation relative to the stator. Permanent magnets are mounted on either the rotor or stator, while electromagnets are mounted on the other of the rotor and stator in order to cooperate the permanent magnets. A variable speed motor actuates a timing disc to pulse the electromagnets as a function of the speed of the variable speed motor to control the speed of rotation of the rotor of the electromagnetic motor.

Inventors

  • 👤 James H. Bowen

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-02 11:35
CPC Classifications
H; H02; H02K; H02K25/00

Claims Analysis

Total Claims: 8
Claim 1
Independent Claim 227 words
An electromagnetic impulse motor, comprising, in combination: a stator; a rotor arranged for rotation relative to the stator and cooperating with the stator to form a stator-rotor assembly; a permanent magnet mounted on the rotor; electromagnet means mounted on the stator for impulsing the permanent magnet and causing rotation of the rotor; and variable speed timing means electrically connected to the electromagnet means for pulsing the latter as a function of the speed of the variable speed timing means and controlling the speed of rotation of the rotor, the stator including a framework constructed from a non-magnetic material, the rotor including a shaft rotatably mounted on the framework, a plurality of flywheels having peripheries and being mounted on the shaft for rotating same, the flywheels being constructed from a non-magnetic material, the permanent magnet being a plurality of permanent magnets mounted on the peripheries of the flywheels, each of the flywheels being a disc having a periphery provided with a plurality of notches equally spaced around the periphery of a groove at the apex of each notch, the notches forming seats for the permanent magnets with a portion of each permanent magnet being held in the groove associated with the respective notch, the permanent magnets and electromagnets being advantageously with opposite poles thereof adjacent one another for creating only attraction forces between the permanent magnets and electromagnets.
Claim 2
Dependent Claim 227 words
An electromagnetic impulse motor, comprising, in combination: a stator; a rotor arranged for rotation relative to the stator and cooperating with the stator to form a stator-rotor assembly; a permanent magnet mounted on the rotor; electromagnet means mounted on the stator for impulsing the permanent magnet and causing rotation of the rotor; and variable speed timing means electrically connected to the electromagnet means for pulsing the latter as a function of the speed of the variable speed timing means and controlling the speed of rotation of the rotor, the stator including a framework constructed from a non-magnetic material, the rotor including a shaft rotatably mounted on the framework, a plurality of flywheels having peripheries and being mounted on the shaft for rotating same, the flywheels being constructed from a non-magnetic material, the permanent magnet being a plurality of permanent magnets mounted on the peripheries of the flywheels, each of the flywheels being a disc having a periphery provided with a plurality of notches equally spaced around the periphery of a groove at the apex of each notch, the notches forming seats for the permanent magnets with a portion of each permanent magnet being held in the groove associated with the respective notch, the permanent magnets and electromagnets being advantageously with opposite poles thereof adjacent one another for creating only attraction forces between the permanent magnets and electromagnets.
Claim 3
Dependent Claim 63 words
A structure as defined in claim 1, wherein the electromagnet means includes a plurality of sets of electromagnets mounted on the frame adjacent the rotor, each one of the sets of electromagnets being associated with a respective one of the flywheels, and the number of electromagnets in each set being the same as the number of permanent magnets provided on the associated flywheel.
Claim 4
Dependent Claim 112 words
A structure as defined in claim 2, wherein the timing means includes, in combination: 1. an entirely separate variable speed motor having an output shaft; 2. a timing disc mounted on the output shaft of the variable speed motor and provided with a plurality of contact segments electrically connected to a source of electricity and equal in number to the sets of electromagnets; and 3. a plurality of brush means arranged for intermittently contacting the contact segments, each one of the brush means being electrically connected to an associated, respective one of the sets of electromagnets for energizing the electromagnets whenever the contact segments are wiped by one of the brush means.
Claim 5
Dependent Claim 228 words
An electromagnetic impulse motor, comprising, in combination: a. a stator; b. a rotor arranged for rotation relative to the stator and cooperating with the stator to form a stator-rotor assembly; c. a permanent magnet mounted on one of the stator and rotor; d. electromagnet means mounted on the other of the stator and rotor for impulsing the permanent magnet and causing rotation of the rotor; e. variable speed timing means electrically connected to the electromagnet means for pulsing the latter as a function of the speed of the variable speed timing means and controlling the speed of rotation of the rotor, and the electromagnet means includes a plurality of sets of electromagnets, the electromagnets of each set connected in series to one another, and the timing means includes, in combination: 1. an entirely separate variable speed motor having an output shaft; 2. a timing disc mounted on the output shaft of the variable speed motor and provided with a plurality of contact segments electrically connected to a source of electricity and equal in number to the sets of electromagnets; and 3. a plurality of brush means arranged for intermittently contacting the contact segments, each one of the brush means being electrically connected to an associated, respective one of the sets of electromagnets for energizing the electromagnets whenever the contact segments are wiped by one of the brush means.
Claim 6
Dependent Claim 228 words
An electromagnetic impulse motor, comprising, in combination: a. a stator; b. a rotor arranged for rotation relative to the stator and cooperating with the stator to form a stator-rotor assembly; c. a permanent magnet mounted on one of the stator and rotor; d. electromagnet means mounted on the other of the stator and rotor for impulsing the permanent magnet and causing rotation of the rotor; e. variable speed timing means electrically connected to the electromagnet means for pulsing the latter as a function of the speed of the variable speed timing means and controlling the speed of rotation of the rotor, and the electromagnet means includes a plurality of sets of electromagnets, the electromagnets of each set connected in series to one another, and the timing means includes, in combination: 1. an entirely separate variable speed motor having an output shaft; 2. a timing disc mounted on the output shaft of the variable speed motor and provided with a plurality of contact segments electrically connected to a source of electricity and equal in number to the sets of electromagnets; and 3. a plurality of brush means arranged for intermittently contacting the contact segments, each one of the brush means being electrically connected to an associated, respective one of the sets of electromagnets for energizing the electromagnets whenever the contact segments are wiped by one of the brush means.
Claim 7
Dependent Claim 43 words
A structure as defined in claim 4, wherein the said variable speed motor is connected to a direct current battery for the source of energization thereof which is entirely separate and distinct from the said source of electricity of the said contact segments.
Claim 8
Dependent Claim 18 words
A structure as defined in claim 5, wherein the said direct current battery is of the nickel-cadmium type.

References Cited (Backward Citations)

US411030A Cited
US1872313A Cited
US2347590A Cited
US2697192A Cited
US3751698A Cited
US3870914A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1979-06-08 1979-12-08 1980-06-08 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1983-06-08 1983-12-08 1984-06-08 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1987-06-08 1987-12-08 1988-06-08 $7700.00 Window Closed / Lapsed

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