US4486675A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Direct current magnetic motor
Assignee: Individual
•
Filing: 1982-02-16
•
Granted: 1984-12-04
•
Expires: 2002-02-16
Abstract
Abstract A DC magnetic motor includes first and second stator plates each equipped with first and second commutating rings and four ferromagnetic bodies (e.g. steel) or permanent magnets positioned in quadrature with angularly adjacent permanent magnets having opposite polarities. A pair of rotor plates are fixedly coupled to a central shaft which is mounted for rotation in the stator plates. The rotor plates house a plurality of electromagnets which are energized by a plurality of pairs of brushes which are coupled to the rotor plates and slide along the commutating rings. The segments of the commutating rings are energized and organized such that each electromagnet will be attracted to the next ferromagnetic body. The magnetic field in the electromagnets is collapsed by gaps between segments of the rings during the time in which each electromagnet is rotating by the ferromagnetic body to which it was attracted after which the magnetic field in the electromagnet is reversed.
Inventors
- 👤 Kenneth J. Albert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 11:14
CPC Classifications
H; H02; H02K; H02K25/00
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
197 words
A direct current magnetic motor comprising: (A) a pair of stator plates disposed parallel to and aligned with one another; (B) a plurality of permanent magnets mounted on inside faces of each of said stator plates such that diametrically opposed permanent magnets on each stator plate are of the same polarity, circumferentially adjacent permanent magnets on each stator plate are of opposite polarity, and facing magnets are of opposite polarity; (C) a rotor assembly including: 1. a pair of rotor plates; 2. a central shaft fixedly coupled to said pair of rotor plates and mounted for rotation in said pair of stator plates; and 3. a plurality of electromagnets mounted proximate the periphery of said pair of rotor plates; (D) a concentric pair of segmented commutator rings mounted on each of said stator plates, each of said segments in each of said pair of commutator rings being separated from circumferentially adjacent segments by a non-conductive gap; (E) at least one pair of electrically conductive brush means carried by said rotor plates, each brush means of said pair slideably engaging one of said segmented commutator rings; (F) said brush means being coupled to said plurality of electromagnets for:
Claim 2
Dependent Claim
197 words
A direct current magnetic motor comprising: (A) a pair of stator plates disposed parallel to and aligned with one another; (B) a plurality of permanent magnets mounted on inside faces of each of said stator plates such that diametrically opposed permanent magnets on each stator plate are of the same polarity, circumferentially adjacent permanent magnets on each stator plate are of opposite polarity, and facing magnets are of opposite polarity; (C) a rotor assembly including: 1. a pair of rotor plates; 2. a central shaft fixedly coupled to said pair of rotor plates and mounted for rotation in said pair of stator plates; and 3. a plurality of electromagnets mounted proximate the periphery of said pair of rotor plates; (D) a concentric pair of segmented commutator rings mounted on each of said stator plates, each of said segments in each of said pair of commutator rings being separated from circumferentially adjacent segments by a non-conductive gap; (E) at least one pair of electrically conductive brush means carried by said rotor plates, each brush means of said pair slideably engaging one of said segmented commutator rings; (F) said brush means being coupled to said plurality of electromagnets for:
Claim 3
Dependent Claim
62 words
first, energizing at least one of said plurality of electromagnets to be attracted to one facing pair of said plurality of permanent magnets; 2. second, collapsing the magnetic field of said at least one of said plurality of electromagnets as it rotates by said one facing pair of magnets and as said brush means impinges non-conductive gaps in said commutator rings; and
Claim 4
Dependent Claim
62 words
first, energizing at least one of said plurality of electromagnets to be attracted to one facing pair of said plurality of permanent magnets; 2. second, collapsing the magnetic field of said at least one of said plurality of electromagnets as it rotates by said one facing pair of magnets and as said brush means impinges non-conductive gaps in said commutator rings; and
Claim 5
Dependent Claim
25 words
third, energizing said at least one of said plurality of electromagnets to be repulsed from said one facing pair of said plurality of permanent magnets.
Claim 6
Dependent Claim
25 words
third, energizing said at least one of said plurality of electromagnets to be repulsed from said one facing pair of said plurality of permanent magnets.
Claim 7
Dependent Claim
30 words
The direct current motor of claim 1 in which said plurality of permanent magnets comprises four permanent magnets positioned in quadrature on each of said pair of said stator plates.
Claim 8
Dependent Claim
35 words
The direct current motor of claim 1 in which said plurality of electromagnets comprises sixteen electromagnets mounted on said pair of rotor plates, said electromagnets being selectively coupled to four pairs of said brush means.
Claim 9
Dependent Claim
22 words
The direct current motor of claim 3 wherein each of said segments comprises a conductive ramp portion and a non-conductive step portion.
Claim 10
Dependent Claim
28 words
The direct current motor of claim 4 in which each of said electrically conductive brushes comprises a plunger which is resiliently mounted within one of said rotor plates.
Claim 11
Dependent Claim
18 words
The direct current motor of claim 1 in which each rotor plate is made of a non-ferromagnetic material.
Claim 12
Dependent Claim
26 words
The direct current motor of claim 1 in which each rotor plate comprises a first layer of ferromagnetic material and a second layer of non-ferromagnetic material.
References Cited (Backward Citations)
US1863294A
Cited
US2066343A
Cited
US2164250A
Cited
US2812454A
Cited
US3331973A
Cited
US3751698A
Cited
US3665227A
Cited
US3832581A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-12-04 | 1988-06-04 | 1988-12-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-12-04 | 1992-06-04 | 1992-12-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-12-04 | 1996-06-04 | 1996-12-04 | $7700.00 | Window Closed / Lapsed |