US3344378A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic detent
Assignee: Individual
•
Filing: 1965-07-30
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Granted: 1967-09-26
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Expires: 1985-07-30
Abstract
No abstract record available.
Inventors
- 👤 Donald A Wilhelmson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 11:54
CPC Classifications
H; H01; H01H; H01H5/00; H01H5/02; H02; H02K; H02K49/00; H01H3/00; H01H3/32; H01H3/50; H01H2003/506
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
109 words
A MAGNETIC DETENT COMPRISING A SHAFT WHICH IS TO EXHIBIT A GIVEN NUMBER OF DETENT POSITIONS; STATOR MEANS HAVING A FIRST PLURALITY OF STATOR POLES EQUAL IN NUMBER TO SAID DETENT POSITIONS AND A SECOND PLURALITY OF STATOR POLES WHICH ARE GREATER IN NUMBER THAN SAID FIRST PLURALITY OF POLES; AND ROTOR MEANS HAVING TWO SETS OF POLES WHICH ARE EQUAL IN NUMBER TO SAID FIRST AND SECOND PLURALITY OF STATOR POLES RESPECTIVELY, SAID ROTOR AND STATOR POLES BEING POSITIONED SO THAT SAID GIVEN NUMBER OF DETENT POSITIONS EXIST WHERE BOTH SAID FIRST AND SECOND PLURALITY OF ROTOR AND STATOR POLES ARE ALIGNED WITH A SMALL AIR GAP THEREBETWEEN.
Claim 2
Dependent Claim
109 words
A MAGNETIC DETENT COMPRISING A SHAFT WHICH IS TO EXHIBIT A GIVEN NUMBER OF DETENT POSITIONS; STATOR MEANS HAVING A FIRST PLURALITY OF STATOR POLES EQUAL IN NUMBER TO SAID DETENT POSITIONS AND A SECOND PLURALITY OF STATOR POLES WHICH ARE GREATER IN NUMBER THAN SAID FIRST PLURALITY OF POLES; AND ROTOR MEANS HAVING TWO SETS OF POLES WHICH ARE EQUAL IN NUMBER TO SAID FIRST AND SECOND PLURALITY OF STATOR POLES RESPECTIVELY, SAID ROTOR AND STATOR POLES BEING POSITIONED SO THAT SAID GIVEN NUMBER OF DETENT POSITIONS EXIST WHERE BOTH SAID FIRST AND SECOND PLURALITY OF ROTOR AND STATOR POLES ARE ALIGNED WITH A SMALL AIR GAP THEREBETWEEN.
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) | 1970-09-25 | 1971-03-27 | 1971-09-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-25 | 1975-03-27 | 1975-09-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-25 | 1979-03-27 | 1979-09-26 | $7700.00 | Window Closed / Lapsed |