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US3287516A
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Explosion resistant limit switch
Assignee: Schneider Electric USA Inc
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Filing: 1964-08-21
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Granted: 1966-11-22
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Expires: 1984-08-21
Abstract
No abstract record available.
Inventors
- 👤 Erik J Nielsen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:02
CPC Classifications
H; H01; H01H; H01H9/00; H01H9/02; H01H9/04; H01H9/042; H01H21/00; H01H21/02; H01H21/18; H01H21/22; H01H21/24; H01H21/28; H01H21/285; H01H2021/287
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
113 words
IN AN EXPLOSION RESISTANT LIMIT SWITCH, THE COMBINATION COMPRISING: A HOUSING HAVING AN INTERNAL CAVITY CONTAINING SWITCHING UNITS FOR THE LIMIT SWITCH, AN ADAPTER NONROTATABLY MOUNTED ON AN END OF THE HOUSING, A SELECTED ONE OF A PLURALITY OF DIFFERENT TYPE EXTERNAL OPERATORS NONROTATABLY MOUNTED ON THE ADAPTER IN ANY ONE OF A PLURALITY OF ANGULAR POSITIONS RELATIVE TO SAID END OF THE HOUSING, EACH OF SAID OPERATORS HAVING AN EXTERNALLY OPERATED MEMBER, AND MEANS INCLUDING A PLURALITY OF SPACED BORES IN THE ADAPTER AND A PLUNGER CARRIED BY THE HOUSING AND HAVING A FLANGED END ALIGNED WITH THE BORES FOR TRANSMITTING MOVEMENT OF THE MEMBER TO THE SWITCHING UNITS IN THE CAVITY.
References Cited (Backward Citations)
GB731036A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-11-21 | 1970-05-23 | 1970-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-21 | 1974-05-23 | 1974-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-21 | 1978-05-23 | 1978-11-22 | $7700.00 | Window Closed / Lapsed |