US3393285A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Contact arrangements in oil circuit interrupter
Assignee: Allis Chalmers Corp
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Filing: 1965-12-30
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Granted: 1968-07-16
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Expires: 1985-12-30
Abstract
No abstract record available.
Inventors
- 👤 William E Harper
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 12:41
CPC Classifications
H; H01; H01H; H01H33/00; H01H33/70; H01H33/72; H01H33/75; H01H33/02; H01H33/04; H01H33/06; H01H33/14; H01H33/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
134 words
IN A CIRCUIT INTERRUPTER, A MAIN INTERRUPTER HAVING A STATIONARY MAIN CONTACT THEREIN, AN AUXILIARY INTERRUPTER HAVING A STATIONARY AUXILIARY CONTACT AND AN ELECTRICALLY CONDUCTIVE PROBE THEREIN, SAID STATIONARY CONTACTS BEING ELECTRICALLY CONNECTED TO EACH OTHER, A SHUNT RESISTOR HAVING ONE END ELECTRICALLY CONNECTED TO SAID STATIONARY CONTACTS AND HAVING ITS OTHER END ELECTRICALLY CONNECTED TO SAID PROBE, A MOVABLE MAIN CONTACT FOR COOPERATION WITH SAID STATIONARY MAIN CONTACT, AND A MOVABLE AUXILIARY CONTACT FOR COOPERATING WITH SAID PROBE AND SAID STATIONARY AUXILIARY CONTACT, SAID MOVABLE MAIN AND MOVABLE AUXILIARY CONTACTS BEING ELECTRICALLY CONNECTED AND BEING ADATPED SO THAT UPON MOVEMENT THEREOF TO CLOSED POSITION, SAID MOVABLE AUXILIARY CONTACT FIRST ENGAGES SAID PROBE, THEN SAID MOVABLE MAIN CONTACT ENGAGES SAID STATIONARY MAIN CONTACT, AND THEN SAID MOVABLE AUXILIARY CONTACT ENGAGES SAID STAIONARY AUXILIARY CONTACT.
Claim 2
Dependent Claim
134 words
IN A CIRCUIT INTERRUPTER, A MAIN INTERRUPTER HAVING A STATIONARY MAIN CONTACT THEREIN, AN AUXILIARY INTERRUPTER HAVING A STATIONARY AUXILIARY CONTACT AND AN ELECTRICALLY CONDUCTIVE PROBE THEREIN, SAID STATIONARY CONTACTS BEING ELECTRICALLY CONNECTED TO EACH OTHER, A SHUNT RESISTOR HAVING ONE END ELECTRICALLY CONNECTED TO SAID STATIONARY CONTACTS AND HAVING ITS OTHER END ELECTRICALLY CONNECTED TO SAID PROBE, A MOVABLE MAIN CONTACT FOR COOPERATION WITH SAID STATIONARY MAIN CONTACT, AND A MOVABLE AUXILIARY CONTACT FOR COOPERATING WITH SAID PROBE AND SAID STATIONARY AUXILIARY CONTACT, SAID MOVABLE MAIN AND MOVABLE AUXILIARY CONTACTS BEING ELECTRICALLY CONNECTED AND BEING ADATPED SO THAT UPON MOVEMENT THEREOF TO CLOSED POSITION, SAID MOVABLE AUXILIARY CONTACT FIRST ENGAGES SAID PROBE, THEN SAID MOVABLE MAIN CONTACT ENGAGES SAID STATIONARY MAIN CONTACT, AND THEN SAID MOVABLE AUXILIARY CONTACT ENGAGES SAID STAIONARY AUXILIARY CONTACT.
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) | 1971-07-16 | 1972-01-15 | 1972-07-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-07-16 | 1976-01-15 | 1976-07-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-07-16 | 1980-01-15 | 1980-07-16 | $7700.00 | Window Closed / Lapsed |