US3879622A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Permanent magnet motion conversion device
Assignee: Individual
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Filing: 1974-03-29
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Granted: 1975-04-22
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Expires: 1994-03-29
Abstract
Abstract A permanent magnet motor in one embodiment utilizes a springbiased reciprocating magnetizable member positioned between two permanent magnets. Magnetic shields in the form of rotatable shutters are located between each permanent magnet and the reciprocating member to alternately shield and expose the member to the magnetic field thereby producing reciprocating motion. A second embodiment utilizes a pair of reciprocating spring-biased permanent magnets with adjacent like magnetic poles separated by a magnetic shield which alternately exposes and shields the like poles from the repelling forces of their magnetic fields.
Inventors
- 👤 John W Ecklin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 19:44
CPC Classifications
H; H02; H02K; H02K53/00
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
129 words
A permanent magnet motor comprising a pair of permanent magnets positioned in spaced relationship, a reciprocating magnetizable member positioned between said permanent magnets, power-take-off means coupled to said reciprocating member, spring means biasing said reciprocating member between said permanent magnets, a pair of magnetic shields positioned on either side of said reciprocating member and between said permanent magnets to shield said reciprocating member from the magnetic fields of said permanent magnets, and means to move said shields in and out between said reciprocating member and said permanent magnets to alternately shield and expose said member to the magnetic fields of said permanent magnets, whereby the actions of the magnetic fields of the permanent magnets and the spring means cause the reciprocating magnetizable member to reciprocate between the permanent magnets.
Claim 2
Dependent Claim
129 words
A permanent magnet motor comprising a pair of permanent magnets positioned in spaced relationship, a reciprocating magnetizable member positioned between said permanent magnets, power-take-off means coupled to said reciprocating member, spring means biasing said reciprocating member between said permanent magnets, a pair of magnetic shields positioned on either side of said reciprocating member and between said permanent magnets to shield said reciprocating member from the magnetic fields of said permanent magnets, and means to move said shields in and out between said reciprocating member and said permanent magnets to alternately shield and expose said member to the magnetic fields of said permanent magnets, whereby the actions of the magnetic fields of the permanent magnets and the spring means cause the reciprocating magnetizable member to reciprocate between the permanent magnets.
Claim 3
Dependent Claim
129 words
A permanent magnet motor comprising A pair of permanent magnets positioned in spaced relationship, a reciprocating magnetizable member positioned between said permanent magnets, power-take-off means coupled to said reciprocating member, spring means biasing said reciprocating member between said permanent magnets, a pair of magnetic shields positioned on either side of said reciprocating member and between said permanent magnets to shield said reciprocating member from the magnetic fields of said permanent magnets, and means to move said shields in and out between said reciprocating member and said permanent magnets to alternately shield and expose said member to the magnetic fields of said permanent magnets, whereby the actions of the magnetic fields of the permanent magnets and the spring means cause the reciprocating magnetizable member to reciprocate between the permanent magnets.
Claim 4
Dependent Claim
129 words
A permanent magnet motor comprising A pair of permanent magnets positioned in spaced relationship, a reciprocating magnetizable member positioned between said permanent magnets, power-take-off means coupled to said reciprocating member, spring means biasing said reciprocating member between said permanent magnets, a pair of magnetic shields positioned on either side of said reciprocating member and between said permanent magnets to shield said reciprocating member from the magnetic fields of said permanent magnets, and means to move said shields in and out between said reciprocating member and said permanent magnets to alternately shield and expose said member to the magnetic fields of said permanent magnets, whereby the actions of the magnetic fields of the permanent magnets and the spring means cause the reciprocating magnetizable member to reciprocate between the permanent magnets.
Claim 5
Dependent Claim
30 words
The combination according to claim 1 wherein said magnetic shields comprise rotatable shutters positioned to be inserted and removed at right angles to the magnetic fields of the permanent magnets.
Claim 6
Dependent Claim
52 words
The combination according to claim 1 wherein said spring means comprise a spring connected to either side of said reciprocating member whereby motion of said reciprocating member in one direction will elongate one spring and compress the other to provide restorative forces to the reciprocating member at each end of its travel.
Claim 7
Dependent Claim
15 words
the combination according to claim 1 wherein said reciprocating magnetizable member is a permanent magnet.
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) | 1978-04-21 | 1978-10-21 | 1979-04-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-04-21 | 1982-10-21 | 1983-04-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-04-21 | 1986-10-21 | 1987-04-22 | $7700.00 | Window Closed / Lapsed |