Patent US3277253A successfully refreshed from Google Patents.
US3277253A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Safety interlock mechanism for an electric switch and receptacle unit
Assignee: Individual
•
Filing: 1964-05-25
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Granted: 1966-10-04
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Expires: 1984-05-25
Abstract
No abstract record available.
Inventors
- 👤 Robert M Bacon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 09:46
CPC Classifications
H; H01; H01R; H01R13/00; H01R13/66; H01R13/70; H01R13/707
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
106 words
AN ELECTRICAL SWITCH AND RECEPTACLE UNIT COMPRISING A CASING, A RECEPTACLE WITHIN THE CASING, SAID CASING HAVING A RECEPTACLE ACCESS OPENING, SAID CASING HAVING A RECEPTACLE ACCESS DOOR FOR SAID OPENING, A SWITCH WITHIN THE CASING, A SWITCH ACTUATING MEMBER CONNECTED TO THE SWITCH TO OPEN AND CLOSE THE SWITCH, SAID SWITCH ACTUATING MEMBER INCLUDING MEANS FOR OPERATION THEREOF EXTERIOR OF THE CASING, AND AN INTERLOCK STRUCTURE WITHIN THE CASING OPERATIVELY CONNECTED TO THE SWITCH ACTUATING MEMBER TO LOCK ONE OF A PLUG CONNECTED TO THE RECEPTACLE AND THE CLOSED RECEPTACLE ACCESS DOOR IN PLACE WHEN THE SWITCH ACTUATING MEMBER IS POSITIONED TO CLOSE THE SWITCH.
References Cited (Backward Citations)
GB191515427A
Cited
US2439708A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-10-03 | 1970-04-04 | 1970-10-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-03 | 1974-04-04 | 1974-10-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-03 | 1978-04-04 | 1978-10-04 | $7700.00 | Window Closed / Lapsed |