Patent US3649532A successfully refreshed from Google Patents.
Patent US3117254A successfully refreshed from Google Patents.
US3117254A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Timing circuit consisting of a relay and of a parallel-connected capacitor
Assignee: International Standard Electric Corp
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Filing: 1959-03-09
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Granted: 1964-01-07
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Expires: 1979-03-09
Abstract
No abstract record available.
Inventors
- 👤 Luce Rudolf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:33
CPC Classifications
H; H01; H01H; H01H47/00; H01H47/02; H01H47/18; H03; H03K; H03K17/00; H03K17/28
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
138 words
IN A TIMING CIRCUIT, AN ELECTROMAGNETIC RELAY HAVING A FIRST WINDING AND A SECOND WINDING CONNECTED IN PARALLEL AND IN FLUX-OPPOSING RELATION, AN RC TIME-CONSTANT NETWORK CONNECTED IN PARALLEL WITH SAID WINDING, A FIRST POWER SOURCE AND MEANS FOR CONNECTING IT TO SAID WINDINGS AND SAID NETWORK, AN ADJUSTABLE FLUX SOURCE ASSOCIATED WITH SAID RELAY, SAID FLUX SOURCE BEING INDEPENDENT OF SAID FIRST POWER SOURCE, AND ARRANGED IN FLUX AIDING RELATION WITH THE SAID FIRST WINDING, MEANS FOR ADJUSTING THE MAGNETOMOTIVE FORCE OF SAID FLUX SOURCE EQUAL TO THE MAXIMUM MAGNETOMOTIVE FORCE WHICH PERMITS THE RELAY TO RELEASE, AND MEANS FOR ADJUSTING THE MAGNETOMOTIVE FORCE GENERATED BY SAID SECOND WINDING TO A VALUE EQUAL TO THE SAID MAXIMUM MAGNETOMOTIVE FORCE TO MAINTAIN THE RELEASE TIME CHARACTERISTICS OF SAID RELAY INDEPENDENT OF ANY VARIATIONS IN SAID FIRST POWER SOURCE.
Claim 2
Dependent Claim
138 words
IN A TIMING CIRCUIT, AN ELECTROMAGNETIC RELAY HAVING A FIRST WINDING AND A SECOND WINDING CONNECTED IN PARALLEL AND IN FLUX-OPPOSING RELATION, AN RC TIME-CONSTANT NETWORK CONNECTED IN PARALLEL WITH SAID WINDING, A FIRST POWER SOURCE AND MEANS FOR CONNECTING IT TO SAID WINDINGS AND SAID NETWORK, AN ADJUSTABLE FLUX SOURCE ASSOCIATED WITH SAID RELAY, SAID FLUX SOURCE BEING INDEPENDENT OF SAID FIRST POWER SOURCE, AND ARRANGED IN FLUX AIDING RELATION WITH THE SAID FIRST WINDING, MEANS FOR ADJUSTING THE MAGNETOMOTIVE FORCE OF SAID FLUX SOURCE EQUAL TO THE MAXIMUM MAGNETOMOTIVE FORCE WHICH PERMITS THE RELAY TO RELEASE, AND MEANS FOR ADJUSTING THE MAGNETOMOTIVE FORCE GENERATED BY SAID SECOND WINDING TO A VALUE EQUAL TO THE SAID MAXIMUM MAGNETOMOTIVE FORCE TO MAINTAIN THE RELEASE TIME CHARACTERISTICS OF SAID RELAY INDEPENDENT OF ANY VARIATIONS IN SAID FIRST POWER SOURCE.
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) | 1967-01-06 | 1967-07-08 | 1968-01-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-01-06 | 1971-07-08 | 1972-01-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-01-06 | 1975-07-08 | 1976-01-07 | $7700.00 | Window Closed / Lapsed |