Patent US3604965A successfully refreshed from Google Patents.
US3604965A
Expired / Lapsed
US
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Double magnetic alternate path signal generator
Assignee: Motors Liquidation Co
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Filing: 1970-03-13
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Granted: 1971-09-14
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Expires: 1990-03-13
Abstract
Abstract A signal generator having a stator and a rotor in which either the stator or the rotor is comprised of two members each having teeth around its periphery. The two members are positioned such that the teeth on the two members are out of phase with each other. Two permanent magnets are provided wherein each one is associated with one of the toothed members. The remaining stator or rotor has teeth confronting the teeth on the two members such that when the rotor is rotated, alternate magnetic paths are provided for each of the magnets. A coil is associated with the two members such that when the rotor is rotated, changing flux which results from the providing of alternate paths for the flux output of the permanent magnets induces a voltage in the coil corresponding to the changing flux and, therefore, the rotation of the rotor.
Inventors
- 👤 Richard S Stroud
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:59
CPC Classifications
H; H02; H02K; H02K21/00; H02K21/38; H02K21/44
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
139 words
A signal generator comprising, in combination, a coil, a first magnetic flux source, a flux path for the first magnetic flux source including a first variable reluctance flux path in parallel with the series combination of the coil and a second variable reluctance flux path, a second magnetic flux source, a flux path for the second magnetic flux source including the second variable reluctance flux path in parallel with the series combination of the coil and the first variable reluctance flux path, the direction of the magnetic flux through the coil from the first and second magnetic flux sources being in an opposing relationship, and means for cyclically varying the reluctance of the first and second variable reluctance flux paths in an inverse relationship for cyclically varying the magnetic flux through the coil to induce a corresponding voltage therein.
Claim 2
Dependent Claim
139 words
A signal generator comprising, in combination, a coil, a first magnetic flux source, a flux path for the first magnetic flux source including a first variable reluctance flux path in parallel with the series combination of the coil and a second variable reluctance flux path, a second magnetic flux source, a flux path for the second magnetic flux source including the second variable reluctance flux path in parallel with the series combination of the coil and the first variable reluctance flux path, the direction of the magnetic flux through the coil from the first and second magnetic flux sources being in an opposing relationship, and means for cyclically varying the reluctance of the first and second variable reluctance flux paths in an inverse relationship for cyclically varying the magnetic flux through the coil to induce a corresponding voltage therein.
Claim 3
Dependent Claim
205 words
A signal generator comprising, in combination, a coil; a first magnetic flux source; a second magnetic flux source; a first variable reluctance flux path including a firsT circular member having teeth space on a surface thereof and a second circular member having teeth confronting the teeth on the first circular member; a second variable flux path including a third circular member having teeth spaced on a surface thereof and the second circular member having its teeth confronting the teeth on the third circular member; a flux path for the first magnetic flux source including the first variable reluctance flux path in parallel with the series combination of the coil and the second variable reluctance flux path; a flux path for the second magnetic flux source including the second variable reluctance flux path in parallel with the series combination of the coil and the first variable reluctance flux path, the direction of the magnetic flux through the coil from the first and second magnetic flux sources being in an opposing relationship; and means for cyclically varying the reluctance of the first and second variable reluctance flux paths in an inverse relationship for cyclically varying the magnetic flux through the coil to induce a corresponding voltage therein.
Claim 4
Dependent Claim
205 words
A signal generator comprising, in combination, a coil; a first magnetic flux source; a second magnetic flux source; a first variable reluctance flux path including a firsT circular member having teeth space on a surface thereof and a second circular member having teeth confronting the teeth on the first circular member; a second variable flux path including a third circular member having teeth spaced on a surface thereof and the second circular member having its teeth confronting the teeth on the third circular member; a flux path for the first magnetic flux source including the first variable reluctance flux path in parallel with the series combination of the coil and the second variable reluctance flux path; a flux path for the second magnetic flux source including the second variable reluctance flux path in parallel with the series combination of the coil and the first variable reluctance flux path, the direction of the magnetic flux through the coil from the first and second magnetic flux sources being in an opposing relationship; and means for cyclically varying the reluctance of the first and second variable reluctance flux paths in an inverse relationship for cyclically varying the magnetic flux through the coil to induce a corresponding voltage therein.
Claim 5
Dependent Claim
28 words
The signal generator as claimed in claim 2 wherein the teeth on the first circular member are out of phase with the teeth on the third circular member.
Claim 6
Dependent Claim
94 words
The signal general as claimed in claim 3 wherein the first and third circular members are stationary with respect to one another, the first and third circular members and the second circular member are mounted for relative rotation, and the means for cyclically varying the reluctance of the first and second variable reluctance flux paths in an inverse relationship includes means for producing relative rotation between the first and third circular members to cause the teeth on the first and third circular members to alternately cooperate with the teeth on the second circular member.
Claim 7
Dependent Claim
73 words
A signal generator comprising, in combination, means defining a first magnetic flux path including two opposed balance magnetic flux sources and a coil through which the flux path extends, means defining two shunt flux paths each connected across a respective flux source and bypassing the coil and means for cyclically inversely varying the reluctance of the shunt paths to cyclically vary the magnetic flux through the coil and induce an alternating voltage therein.
Claim 8
Dependent Claim
73 words
A signal generator comprising, in combination, means defining a first magnetic flux path including two opposed balance magnetic flux sources and a coil through which the flux path extends, means defining two shunt flux paths each connected across a respective flux source and bypassing the coil and means for cyclically inversely varying the reluctance of the shunt paths to cyclically vary the magnetic flux through the coil and induce an alternating voltage therein.
References Cited (Backward Citations)
US3469133A
Cited
US3283190A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-09-13 | 1975-03-15 | 1975-09-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-13 | 1979-03-15 | 1979-09-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-13 | 1983-03-15 | 1983-09-14 | $7700.00 | Window Closed / Lapsed |