US3254185A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure operated circuit breaker with arc extinguisher
Assignee: Sigma Instruments Inc
•
Filing: 1963-07-24
•
Granted: 1966-05-31
•
Expires: 1983-07-24
Abstract
No abstract record available.
Inventors
- 👤 Harold T Adkins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 08:24
CPC Classifications
H; H01; H01R; H01R35/00; H01R35/02; H01H; H01H33/00; H01H33/70; H01H33/80; H01H33/82; H01H33/83
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
108 words
A CIRCUIT BREAKER COMPRISING: TOW AXIALLY-ALIGNED HOLLOW CONDUCTORS HAVING AXIALLY-SPACED OPPOSING INNER ENDS; A DIELECTRIC PISTON ROD SLIDABLY MOUNTED IN ONE HOLLOW CONDUCTOR FOR RECIPROCATING MOVEMENT PARTLY OUT OF SAID ONE HOLLOW CONDUCTOR INTO THE OUTER HOLLOW CONDUCTOR, SAID PISTON ROD INCLUDING TWO SPACED-APART ENLARGED PORTIONS; AN ELECTRICALLY CONDUCTIVE ELEMENT SLIDABLY MOUNTED ON SAID PISTON ROD AND ADAPTED TO BE ENGAGED BY SAID ENLARGED PORTIONS OF SAID PISTON ROD DURING RECIPROCATING MOVEMENT OF SAID PISTON ROD TO SLIDE SAID CONDUCTIVE ELEMEMT INTO CONTACT WITH THE HOLLOW CONDUCTOR TOWARD WHICH SAID PISTON ROD IS MOVING; SAID FLEXIBLE CONDUCTOR MEANS CONNECTED BETWEEN SAID ONE HOLLOW CONDUCTOR AND SAID CONDUCTIVE ELEMENT.
Claim 2
Dependent Claim
108 words
A CIRCUIT BREAKER COMPRISING: TOW AXIALLY-ALIGNED HOLLOW CONDUCTORS HAVING AXIALLY-SPACED OPPOSING INNER ENDS; A DIELECTRIC PISTON ROD SLIDABLY MOUNTED IN ONE HOLLOW CONDUCTOR FOR RECIPROCATING MOVEMENT PARTLY OUT OF SAID ONE HOLLOW CONDUCTOR INTO THE OUTER HOLLOW CONDUCTOR, SAID PISTON ROD INCLUDING TWO SPACED-APART ENLARGED PORTIONS; AN ELECTRICALLY CONDUCTIVE ELEMENT SLIDABLY MOUNTED ON SAID PISTON ROD AND ADAPTED TO BE ENGAGED BY SAID ENLARGED PORTIONS OF SAID PISTON ROD DURING RECIPROCATING MOVEMENT OF SAID PISTON ROD TO SLIDE SAID CONDUCTIVE ELEMEMT INTO CONTACT WITH THE HOLLOW CONDUCTOR TOWARD WHICH SAID PISTON ROD IS MOVING; SAID FLEXIBLE CONDUCTOR MEANS CONNECTED BETWEEN SAID ONE HOLLOW CONDUCTOR AND SAID CONDUCTIVE ELEMENT.
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) | 1969-05-30 | 1969-11-29 | 1970-05-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-30 | 1973-11-29 | 1974-05-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-30 | 1977-11-29 | 1978-05-31 | $7700.00 | Window Closed / Lapsed |