US3118987A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electromagnetic bistable relay
Assignee: Individual
•
Filing: 1960-06-10
•
Granted: 1964-01-21
•
Expires: 1980-06-10
Abstract
No abstract record available.
Inventors
- 👤 Warner W Clements
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:51
CPC Classifications
H; H01; H01H; H01H51/00; H01H51/28; H01H51/284; H01H51/285
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
138 words
AN ELECTROMAGNETIC DEVICE INCLUDING AT LEAST: A GENERALLY SOLENOIDAL COIL; TWO MAGNETIC MEMBERS EXTENDING FROM OPPOSITE DIRECTIONS INTO THE HOLE IN THE COIL, THE CENTRAL ENDS OF SAID MEMBERS BEING LATERALLY SPACED; AN ARMATURE MOUNTED BETWEEN THE CENTRAL ENDS OF THE MAGNETIC MEMBERS FOR SUBSTANTIALLY LATERAL LIMITED MOTION TOWARD ONE OR THE OTHER OF SAID ENDS, SAID ARMATURE BEING SO SHAPED FOR TANGENTIAL APPROACH TO SAID ENDS; A CONTROL ELEMENT INCLUDING MAGNETIC MATERIAL TO BE MOVABLE INTO POSITION AGAINST ONE OR THE OTHER OF SAID MAGNETIC MEMBERS FOR SELECTIVELY SHUNTING ONE OR THE OTHER OF THE GAPS BETWEEN SAID MAGNETIC MEMBERS AND SAID ARMATURE; AND RESILIENT MEANS FOR BIASING SAID ARMATURE TOWARD THE EXTREMES OF ITS TRAVEL AND FOR CONCURRENTLY BIASING SAID CONTROL ELEMENT TOWARD THAT ONE OF SAID MAGNETIC MEMBERS TO WHICH SAID ARMATURE IS CURRENTLY ADJACENT.
Claim 2
Dependent Claim
138 words
AN ELECTROMAGNETIC DEVICE INCLUDING AT LEAST: A GENERALLY SOLENOIDAL COIL; TWO MAGNETIC MEMBERS EXTENDING FROM OPPOSITE DIRECTIONS INTO THE HOLE IN THE COIL, THE CENTRAL ENDS OF SAID MEMBERS BEING LATERALLY SPACED; AN ARMATURE MOUNTED BETWEEN THE CENTRAL ENDS OF THE MAGNETIC MEMBERS FOR SUBSTANTIALLY LATERAL LIMITED MOTION TOWARD ONE OR THE OTHER OF SAID ENDS, SAID ARMATURE BEING SO SHAPED FOR TANGENTIAL APPROACH TO SAID ENDS; A CONTROL ELEMENT INCLUDING MAGNETIC MATERIAL TO BE MOVABLE INTO POSITION AGAINST ONE OR THE OTHER OF SAID MAGNETIC MEMBERS FOR SELECTIVELY SHUNTING ONE OR THE OTHER OF THE GAPS BETWEEN SAID MAGNETIC MEMBERS AND SAID ARMATURE; AND RESILIENT MEANS FOR BIASING SAID ARMATURE TOWARD THE EXTREMES OF ITS TRAVEL AND FOR CONCURRENTLY BIASING SAID CONTROL ELEMENT TOWARD THAT ONE OF SAID MAGNETIC MEMBERS TO WHICH SAID ARMATURE IS CURRENTLY ADJACENT.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-01-20 | 1967-07-22 | 1968-01-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-01-20 | 1971-07-22 | 1972-01-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-01-20 | 1975-07-22 | 1976-01-21 | $7700.00 | Window Closed / Lapsed |