Patent US4291248A successfully refreshed from Google Patents.
US4291248A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric motor
Assignee: RAINBOLT RES Inc
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Filing: 1978-12-26
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Granted: 1981-09-22
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Expires: 1998-12-26
Abstract
Abstract An electric motor having exceedingly high efficiencies includes three induction coils equally disposed about a circular path, a toroidally-shaped armature is disposed within the induction coils. The armature has a non-magnetic segment placed therein, thereby creating a pair of poles. Gear means are disposed within the armature and are operatively coupled thereto to provide mechanical output energy. The motor is driven by sequentially connecting a D.C. voltage to each of the three induction coils for a prescribed time.
Inventors
- 👤 Michael A. Rainbolt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:04
CPC Classifications
H; H02; H02K; H02K7/00; H02K7/10; H02K7/116; H02K25/00
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
118 words
An electromechanical energy conversion device comprising, in combination: (a) housing means; (b) three induction coils equally disposed about a circular path and affixed to said housing means forming a stator; (c) toroidally-shaped armature means disposed within said induction coils, said armature means including only one permanent magnet and a segment of non-magnetic material, said non-magnetic material comprising 60 degrees of said toroid with said permanent magnet comprising 300 degrees of said toroid; (d) gear means connected to said armature means by equally spaced rotatable members in contact therewith, said gear means including an output shaft operatively coupled thereto; and (e) timing and distribution means connected to each of said coils for a predetermined time period during each cycle.
Claim 2
Dependent Claim
118 words
An electromechanical energy conversion device comprising, in combination: (a) housing means; (b) three induction coils equally disposed about a circular path and affixed to said housing means forming a stator; (c) toroidally-shaped armature means disposed within said induction coils, said armature means including only one permanent magnet and a segment of non-magnetic material, said non-magnetic material comprising 60 degrees of said toroid with said permanent magnet comprising 300 degrees of said toroid; (d) gear means connected to said armature means by equally spaced rotatable members in contact therewith, said gear means including an output shaft operatively coupled thereto; and (e) timing and distribution means connected to each of said coils for a predetermined time period during each cycle.
Claim 3
Dependent Claim
40 words
An invention according to claim 1 wherein the inner circumferential surface of said armature means is provided with gear teeth adapted to intermesh with and drive said equally spaced rotatable members, said members being operatively coupled to said output shaft.
Claim 4
Dependent Claim
26 words
An invention according to claim 1 wherein said armature means frictionally engages said equally spaced rotatable members, said members being operatively coupled to said output shaft.
Claim 5
Dependent Claim
52 words
An invention according to claim 3 wherein said rotatable members are provided with adjustable V-shaped circumferential notches, said output shaft being provided with a circumferential flange comprising said gear means, said notches being adapted to engage said armature means and said output shaft circumferential flange for driving and centering said output shaft.
Claim 6
Dependent Claim
36 words
An invention according to claim 1 further including a plurality of said toroidally-shaped armature means and said induction coils mounted in tandem and operatively coupled to a common output shaft to increase the output power therefrom.
Claim 7
Dependent Claim
20 words
The invention according to claim 1 wherein said permanent magnet has poles which are oriented circumferentially of said armature means.
Claim 8
Dependent Claim
25 words
The invention according to claim 1 wherein said timing and distribution means includes sequential switching means for sequentially applying current to each of said coils.
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) | 1984-09-21 | 1985-03-23 | 1985-09-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-09-21 | 1989-03-23 | 1989-09-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-09-21 | 1993-03-23 | 1993-09-22 | $7700.00 | Window Closed / Lapsed |