Patent US3935487A successfully refreshed from Google Patents.
US3935487A
Expired / Lapsed
US
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Permanent magnet motor
Assignee: Individual
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Filing: 1974-05-06
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Granted: 1976-01-27
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Expires: 1994-05-06
Abstract
Abstract A permanent magnet motor which generates mechanical output power by the repulsion forces between a movable permanent magnet and a fixed permanent magnet. A movable magnetic shield is interposed between the magnets when they are adjacent one another and then the shield is moved to expose the fixed magnet as the movable magnet passes by. A second fixed magnet can be added to increase the output power by attracting the movable magnet as it approaches. The movable magnetic shield is interposed between the movable magnet and the second fixed magnet when they are adjacent one another.
Inventors
- 👤 Leonard C. Czerniak
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 19:35
CPC Classifications
H; H02; H02K; H02K99/00; H02K99/20
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
120 words
A permanent magnet motor comprising: a supporting frame; an output shaft rotatably attached to said frame; a first permanent magnet means fixedly attached to said frame; a second permanent magnet means in driving relationship with said shaft and rotatably attached to said frame for movement along a predetermined circular path whereby said permanent magnet means repel each other to generate movement in opposite directions along a first portion of said predetermined path; and a magnetic shield coupled to said shaft and rotatably attached to said frame wherein said shield is driven between said first and second permanent magnet means when said first and second permanent magnet means are substantially adjacent each other along a second portion of said predetermined path.
Claim 2
Dependent Claim
120 words
A permanent magnet motor comprising: a supporting frame; an output shaft rotatably attached to said frame; a first permanent magnet means fixedly attached to said frame; a second permanent magnet means in driving relationship with said shaft and rotatably attached to said frame for movement along a predetermined circular path whereby said permanent magnet means repel each other to generate movement in opposite directions along a first portion of said predetermined path; and a magnetic shield coupled to said shaft and rotatably attached to said frame wherein said shield is driven between said first and second permanent magnet means when said first and second permanent magnet means are substantially adjacent each other along a second portion of said predetermined path.
Claim 3
Dependent Claim
32 words
A motor as described in claim 1 wherein said first and second permanent magnet means attract each other to generate movement toward each other along a third portion of said predetermined path.
Claim 4
Dependent Claim
22 words
A motor as described in claim 1 wherein said magnetic shield and said first and second permanent magnet means attract each other.
Claim 5
Dependent Claim
44 words
A motor as described in claim 1 wherein said magnetic shield includes electromagnet means having means to energize selectively said electromagnet whereby during travel beyond said second portion of said predetermined path said first permanent magnet means and said magnetic shield repel each other.
Claim 6
Dependent Claim
169 words
An electromagnetic machine, comprising: a supporting frame; an output shaft rotatably attached to said frame; a first plurality of permanent magnet means fixedly attached to said frame; a second plurality of permanent magnet means in driving relationship with said shaft and rotatably attached to said frame for movement along predetermined circular paths whereby at least one of said first plurality of permanent magnet means and at least one of said second plurality of permanent magnet means repel each other to generate movement in opposite directions along a first portion of each of said predetermined paths; and at least one magnet shield coupled to said shaft wherein said shield moves between said one of said first plurality of permanent magnet means and said one of said second plurality of permanent magnet means when said one of said first plurality and said one of said second plurality are substantially adjacent each other along a second portion of the predetermined path of said one of said second plurality of permanent magnet means.
Claim 7
Dependent Claim
169 words
An electromagnetic machine, comprising: a supporting frame; an output shaft rotatably attached to said frame; a first plurality of permanent magnet means fixedly attached to said frame; a second plurality of permanent magnet means in driving relationship with said shaft and rotatably attached to said frame for movement along predetermined circular paths whereby at least one of said first plurality of permanent magnet means and at least one of said second plurality of permanent magnet means repel each other to generate movement in opposite directions along a first portion of each of said predetermined paths; and at least one magnet shield coupled to said shaft wherein said shield moves between said one of said first plurality of permanent magnet means and said one of said second plurality of permanent magnet means when said one of said first plurality and said one of said second plurality are substantially adjacent each other along a second portion of the predetermined path of said one of said second plurality of permanent magnet means.
Claim 8
Dependent Claim
54 words
An electromagnetic machine as described in claim 5 wherein said one of said first plurality of permanent magnet means and said one of said second plurality of permanent magnet means attract each other to generate movement toward each other along a third portion of the predetermined path of said one of said second plurality.
Claim 9
Dependent Claim
18 words
An electromagnetic machine as described in claim 5 wherein said magnetic shield is fixedly attached to said shaft.
Claim 10
Dependent Claim
29 words
An electromagnetic machine as described in claim 5 including a fixed magnetic shield attached to said frame between at least two of said second plurality of permanent magnet means.
Claim 11
Dependent Claim
45 words
An electromagnetic machine as described in claim 7 wherein said fixed magnetic shield includes electromagnet means and means to energize selectively said electromagnet means whereby during travel beyond said fixed magnetic shield said two permanent magnet means and said fixed magnetic shield repel each other.
Claim 12
Dependent Claim
40 words
An electromagnetic machine as described in claim 6 wherein said one of said first plurality of permanent magnet means includes a first pair of magnetic poles of one polarity and a second pair of magnetic poles of the opposite polarity.
Claim 13
Dependent Claim
75 words
An electromagnetic machine as described in claim 10 wherein said one of said second plurality of permanent magnet means includes a first magnetic pole of said one polarity which is repelled by said first pair of magnetic poles and attracted by said second pair of magnetic poles and a second magnetic pole of said opposite polarity which is attracted by said first pair of magnetic poles and repelled by said second pair of magnetic poles.
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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) | 1979-01-26 | 1979-07-28 | 1980-01-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-01-26 | 1983-07-28 | 1984-01-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-01-26 | 1987-07-28 | 1988-01-27 | $7700.00 | Window Closed / Lapsed |