Patent US3356948A successfully refreshed from Google Patents.
US3356948A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical switching unit, controlled through permanent magnets with a reed contact, having a freely movable armature
Assignee: International Standard Electric Corp
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Filing: 1966-07-06
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Granted: 1967-12-05
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Expires: 1986-07-06
Abstract
No abstract record available.
Inventors
- 👤 Andreas Zerfass
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 09:03
CPC Classifications
H; H01; H01H; H01H51/00; H01H51/28; H01H51/288; H01H1/00; H01H1/12; H01H1/14; H01H1/16; H01H1/64; H01H1/66; H01H36/00; H01H36/0006; H01H36/0013; H01H36/008; H01H50/00; H01H50/54; H01H50/60; H01H9/00; H01H9/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
140 words
AN ELECTRIC SWITCHING UNIT COMPRISING A PAIR OF REED CONTACTS, A FREELY BORNE ARMATURE CAPABLE OF CLOSING AN ELECTRIC CIRCUIT THROUGH SAID REED CONTRACTS, AN ANNULAR PERMANENT MAGNET PRODUCING FLUX, A FIRST PART OF FLUX LINKING WITH SAID REED CONTACTS AND SAID FREELY BORNE ARMATURE TO ENABLE SAID ANNULAR MAGNET TO MOVE SAID ARMATURE INTO AND OUT OF CONTACT WITH SAID REED CONTACTS A SECOND PART OF SAID FLUX LINKING WITH SAID REED CONTACTS AND SAID FREELY BORNE ARMATURE TENDING TO OPPOSE MOTION OF SAID ARMATURE OUT OF CONTACT WITH SAID REED CONTACTS, AND A PAIR OF PERMANENT MAGNETS MAGNETICALLY COUPLED TO SAID ANNULAR PERMANENT MAGNET, SAID PAIR OF PERMANENT MAGNETS PROVIDING ADDITIONAL FLUS COMPENSATING FOR THE SECOND PART OF SAID FLUX AND THUS PROVIDING IMPROVED PERFORMANCE DURING PERIODS WHEN THE ARMATURE SWITCHES OUT OF CONTACT WITH THE REED CONTACTS.
Claim 2
Dependent Claim
140 words
AN ELECTRIC SWITCHING UNIT COMPRISING A PAIR OF REED CONTACTS, A FREELY BORNE ARMATURE CAPABLE OF CLOSING AN ELECTRIC CIRCUIT THROUGH SAID REED CONTRACTS, AN ANNULAR PERMANENT MAGNET PRODUCING FLUX, A FIRST PART OF FLUX LINKING WITH SAID REED CONTACTS AND SAID FREELY BORNE ARMATURE TO ENABLE SAID ANNULAR MAGNET TO MOVE SAID ARMATURE INTO AND OUT OF CONTACT WITH SAID REED CONTACTS A SECOND PART OF SAID FLUX LINKING WITH SAID REED CONTACTS AND SAID FREELY BORNE ARMATURE TENDING TO OPPOSE MOTION OF SAID ARMATURE OUT OF CONTACT WITH SAID REED CONTACTS, AND A PAIR OF PERMANENT MAGNETS MAGNETICALLY COUPLED TO SAID ANNULAR PERMANENT MAGNET, SAID PAIR OF PERMANENT MAGNETS PROVIDING ADDITIONAL FLUS COMPENSATING FOR THE SECOND PART OF SAID FLUX AND THUS PROVIDING IMPROVED PERFORMANCE DURING PERIODS WHEN THE ARMATURE SWITCHES OUT OF CONTACT WITH THE REED CONTACTS.
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) | 1970-12-04 | 1971-06-05 | 1971-12-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-12-04 | 1975-06-05 | 1975-12-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-12-04 | 1979-06-05 | 1979-12-05 | $7700.00 | Window Closed / Lapsed |