US3202886A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bistable solenoid
Assignee: Bulova Watch Co Inc
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Filing: 1962-01-11
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Granted: 1965-08-24
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Expires: 1982-01-11
Abstract
No abstract record available.
Inventors
- 👤 Nathan R Kramer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:35
CPC Classifications
H; H01; H01F; H01F7/00; H01F7/06; H01F7/08; H01F7/16; H01F7/1607; H01F7/1615; H01F7/132; H01F7/121; H01F7/122
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
92 words
A BISTABLE SOLENOID COMPRISING A POLARIZED ARMATURE MAGNETIC MEANS CONSISTING OF, FIRST AND SECOND FIXED ELECTROMAGNETS EACH HAVING A COIL AND A POLE PIECE ADJACENT ONE POLE OF SAID ARMATURE, SAID ARMATURE BEING AXIALLY RECIPROCABLE BETWEEN SAID POLE PIECES, AND MEANS TO ENERGIZE SAID ELECTROMAGNETS SIMULTANEOUSLY IN OPPOSITION WHEREBY SAID POLE PIECES HAVE A LIKE POLARIZATION AND SAID ARMATURE IS REPELLED BY ONE AND ATTRACTED BY THE OTHER TO PROVIDE A PUSH-PULL ACTION, SAID POLE PIECES HAVING SUFFICIENT RESIDUAL MAGNETISM SUCH THAT UPON DE-ENERGIZATION SAID ARMATURE IS MAINTAINED IN ITS ACTUATED POSITION.
Claim 2
Dependent Claim
92 words
A BISTABLE SOLENOID COMPRISING A POLARIZED ARMATURE MAGNETIC MEANS CONSISTING OF, FIRST AND SECOND FIXED ELECTROMAGNETS EACH HAVING A COIL AND A POLE PIECE ADJACENT ONE POLE OF SAID ARMATURE, SAID ARMATURE BEING AXIALLY RECIPROCABLE BETWEEN SAID POLE PIECES, AND MEANS TO ENERGIZE SAID ELECTROMAGNETS SIMULTANEOUSLY IN OPPOSITION WHEREBY SAID POLE PIECES HAVE A LIKE POLARIZATION AND SAID ARMATURE IS REPELLED BY ONE AND ATTRACTED BY THE OTHER TO PROVIDE A PUSH-PULL ACTION, SAID POLE PIECES HAVING SUFFICIENT RESIDUAL MAGNETISM SUCH THAT UPON DE-ENERGIZATION SAID ARMATURE IS MAINTAINED IN ITS ACTUATED POSITION.
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) | 1968-08-23 | 1969-02-22 | 1969-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-23 | 1973-02-22 | 1973-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-23 | 1977-02-22 | 1977-08-24 | $7700.00 | Window Closed / Lapsed |