Patent US3102931A successfully refreshed from Google Patents.
US3102931A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic latching crossbar switch
Assignee: North Electric Co
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Filing: 1961-02-03
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Granted: 1963-09-03
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Expires: 1981-02-03
Abstract
No abstract record available.
Inventors
- 👤 Dorsey D Simmons
- 👤 Svala Carl Gunnar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 07:06
CPC Classifications
H; H01; H01H; H01H67/00; H01H67/22; H01H67/26
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
149 words
A MECHANICAL CROSSBAR SWITCH COMPRISING AT LEAST ONE SET OF HORIZONTAL CONTACTS AND AT LEAST ONE SET OF VERTICAL CONTACTS SUPPORTED IN SPACED ALIGNED RELATION WITH EACH OTHER, SELECTOR MEANS SUPPORTED ADJACENT SAID CONTACT SETS FOR COMPLETING A CIRCUIT CONNECTION OVER SAID CONTACT SETS, A MAGNETIC LATCHING MAGNET SUPPORTED ON SAID SWITCH COMPRISING AT LEAST ONE WINDING ON A CORE CONSISTING OF HIGH CARBON STEEL MATERIAL HAVING A HARDNESS IN THE RANGE OF AT LEAST 58 ROCKWELL "C" AND AN ARMATURE MEMBER SUPPORTED FOR MOVEMENT ADJACENT TO SAID CORE RESPONSIVE TO ENERGIZATION OF SAID WINDING, THE RESIDUAL MAGNETISM PROVIDED BY SAID CORE SUBSEQUENT TO REMOVAL OF THE ENERGIZING FORCE RETAINING THE ARMATURE IN SUCH POSITION, AND OPERATING MEANS CONNECTED TO SAID ARMATURE MEMBER OPERATIVE RESPONSIVE TO ENERGIZATION OF SAID MAGNET WINDING TO OPERATE SAID SELECTOR MEANS IN THE COMPLETION OF A CIRCUIT OVER SAID HORIZONTAL AND VERTICAL CONTACT SETS.
Claim 2
Dependent Claim
149 words
A MECHANICAL CROSSBAR SWITCH COMPRISING AT LEAST ONE SET OF HORIZONTAL CONTACTS AND AT LEAST ONE SET OF VERTICAL CONTACTS SUPPORTED IN SPACED ALIGNED RELATION WITH EACH OTHER, SELECTOR MEANS SUPPORTED ADJACENT SAID CONTACT SETS FOR COMPLETING A CIRCUIT CONNECTION OVER SAID CONTACT SETS, A MAGNETIC LATCHING MAGNET SUPPORTED ON SAID SWITCH COMPRISING AT LEAST ONE WINDING ON A CORE CONSISTING OF HIGH CARBON STEEL MATERIAL HAVING A HARDNESS IN THE RANGE OF AT LEAST 58 ROCKWELL "C" AND AN ARMATURE MEMBER SUPPORTED FOR MOVEMENT ADJACENT TO SAID CORE RESPONSIVE TO ENERGIZATION OF SAID WINDING, THE RESIDUAL MAGNETISM PROVIDED BY SAID CORE SUBSEQUENT TO REMOVAL OF THE ENERGIZING FORCE RETAINING THE ARMATURE IN SUCH POSITION, AND OPERATING MEANS CONNECTED TO SAID ARMATURE MEMBER OPERATIVE RESPONSIVE TO ENERGIZATION OF SAID MAGNET WINDING TO OPERATE SAID SELECTOR MEANS IN THE COMPLETION OF A CIRCUIT OVER SAID HORIZONTAL AND VERTICAL CONTACT SETS.
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) | 1966-09-02 | 1967-03-04 | 1967-09-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-09-02 | 1971-03-04 | 1971-09-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-09-02 | 1975-03-04 | 1975-09-03 | $7700.00 | Window Closed / Lapsed |