Patent US3332045A successfully refreshed from Google Patents.
US3332045A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Permanent magnet and electromagnetic actuator
Assignee: Parker Hannifin Corp
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Filing: 1966-03-11
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Granted: 1967-07-18
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Expires: 1986-03-11
Abstract
No abstract record available.
Inventors
- 👤 Keith S Rodaway
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 01:06
CPC Classifications
H; H01; H01F; H01F7/00; H01F7/06; H01F7/08; H01F7/16; H01F7/1638; H01F7/1646; H01F7/121; H01F7/122; H01F7/124
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
200 words
A POLARIZED ELECTROMAGNETIC ACTUATOR COMPRISING A PAIR OF OPPOSED ELECTROMAGNETS, AXIALLY ALIGNED AND EACH A PAIR OF OPPOSITE POLARITY POLE FACES THEREON FACING AXIALLY IN THE SAME DIRECTION, THE PAIRS FACING IN OPPOSITE DIRECTIONS TOWARDS EACH OTHER; AN ARMATURE MOUNTED BETWEEN SAID ELECTROMAGNETS FOR AXIAL MOVEMENT TOWARD AND AWAY FROM THE ELECTROMAGNETS; PAIRS OF PERMANENT MAGNET POLE FACES ON SAID ARMATURE WITH THE POLE FACES IN EACH PAIR BEING OF OPPOSITE POLARITY AND FACING IN THE SAME DIRECTION AND WITH THE PAIR FACING IN OPPOSITE DIRECTIONS AWAY FROM EACH OTHER AND TOWARD THEIR RESPECTIVE ELECTROMAGNETS SO THAT A PAIR OF PERMANENT MAGNET POLE FACES COOPERATES WITH THE PAIR OF POLE FACES ON ITS ADJACENT ELECTROMAGNET TO LATCH ALTERNATE ONE OF SAID PAIRS OF PERMANENT MAGNET POLE FACES TO ALTERNATE ELECTROMAGNET IN THE OPPOSITE EXTREME POSITIONS OF THE ARMATURE AND PRESENTING AN AIR-GAP BETWEEN THE OTHER PAIR OF PERMANENT MAGNET POLE FACES AND THE NON-LATCHED TO ELECTROMAGNET; AND MEANS MAGNETIZING BOTH OF SAID ELECTROMAGNETS AT THE SAME TIME TO MOVE SAID ARMATURE, THE PAIR OF POLE FACES OF LATCHED-TO ELECTROMAGNET BEING POLARIZED THE SAME AS THE PAIR OF PERMANENT MAGNET POLE FACES ASSOCIATED THEREWITH AND THE AIR-GAP ELECTROMAGNET BEING REVERSELY POLARIZED.
Claim 2
Dependent Claim
200 words
A POLARIZED ELECTROMAGNETIC ACTUATOR COMPRISING A PAIR OF OPPOSED ELECTROMAGNETS, AXIALLY ALIGNED AND EACH A PAIR OF OPPOSITE POLARITY POLE FACES THEREON FACING AXIALLY IN THE SAME DIRECTION, THE PAIRS FACING IN OPPOSITE DIRECTIONS TOWARDS EACH OTHER; AN ARMATURE MOUNTED BETWEEN SAID ELECTROMAGNETS FOR AXIAL MOVEMENT TOWARD AND AWAY FROM THE ELECTROMAGNETS; PAIRS OF PERMANENT MAGNET POLE FACES ON SAID ARMATURE WITH THE POLE FACES IN EACH PAIR BEING OF OPPOSITE POLARITY AND FACING IN THE SAME DIRECTION AND WITH THE PAIR FACING IN OPPOSITE DIRECTIONS AWAY FROM EACH OTHER AND TOWARD THEIR RESPECTIVE ELECTROMAGNETS SO THAT A PAIR OF PERMANENT MAGNET POLE FACES COOPERATES WITH THE PAIR OF POLE FACES ON ITS ADJACENT ELECTROMAGNET TO LATCH ALTERNATE ONE OF SAID PAIRS OF PERMANENT MAGNET POLE FACES TO ALTERNATE ELECTROMAGNET IN THE OPPOSITE EXTREME POSITIONS OF THE ARMATURE AND PRESENTING AN AIR-GAP BETWEEN THE OTHER PAIR OF PERMANENT MAGNET POLE FACES AND THE NON-LATCHED TO ELECTROMAGNET; AND MEANS MAGNETIZING BOTH OF SAID ELECTROMAGNETS AT THE SAME TIME TO MOVE SAID ARMATURE, THE PAIR OF POLE FACES OF LATCHED-TO ELECTROMAGNET BEING POLARIZED THE SAME AS THE PAIR OF PERMANENT MAGNET POLE FACES ASSOCIATED THEREWITH AND THE AIR-GAP ELECTROMAGNET BEING REVERSELY POLARIZED.
References Cited (Backward Citations)
US3040146A
Cited
US3176097A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-07-17 | 1971-01-16 | 1971-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-17 | 1975-01-16 | 1975-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-17 | 1979-01-16 | 1979-07-18 | $7700.00 | Window Closed / Lapsed |