US3331037A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spherical contact structure for sealed mercury switches
Assignee: Arris Technology Inc
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Filing: 1964-07-09
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Granted: 1967-07-11
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Expires: 1984-07-09
Abstract
No abstract record available.
Inventors
- 👤 Herman P Hempel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 08:19
CPC Classifications
H; H01; H01H; H01H51/00; H01H51/28; H01H51/287; H01H1/00; H01H1/06; H01H1/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
192 words
A SEALED NON-BRIDGING SWITCH COMPRISING A HOUSING, A PAIR OF MAGNETIC POLE PIECES SEALED IN ONE END OF THE HOUSING, AN ARMATURE DISPOSED IN THE HOUSING AND HAVING A GENERALLY UNIPLANAR END PORTION COATED WITH MERCURY ON BOTH SIDES AND DISPOSED BETWEEN THE POLE PIECES, A GENERALLY SPHERICAL CONTACT MEMBER SECURED TO EACH OF THE POLE PIECES IN A POSITION ADJACENT THE END PORTION OF THE ARMATURE, THE TWO CONTACT MEMBERS BEING DISPOSED GENERALLY OPPOSITE EACH OTHER, A GENERALLY FLAT SURFACE FORMED ON EACH OF THE SPHERICAL CONTACT MEMBERS ADJACENT THE ARMATURE END PORTION, EACH OF SAID FLAT SURFACES BEING WETTABLE WITH MERCURY AND CARRYING A LAYER OF MERCURY, AND A LAYER OF MATERIAL THAT IS NOT WETTABLE WITH MERCURY COVERING THE ADJACENT SURFACES OF THE POLE PIECES AND ALL OF THE EXPOSED SURFACES OF THE CONTACT MEMBERS EXCEPT THE FLAT SURFACES SO THAT THE MERCURY ON THE FLAT SURFACES AND THE END PORTION PROVIDE MERCURY WETTED CONTACTING MEANS, THE LAYERS OF MATERIAL AND THE SPHERICAL CONTACT MEMBERS PREVENTING THE ACCUMULATION OF SUFFICIENT MERCURY TO PERMIT THE BRIDGING OF THE TWO CONTACT MEMBERS WHEN THE ARMATURE IS TRANSFERRED BETWEEN THE CONTACT MEMBERS.
Claim 2
Dependent Claim
192 words
A SEALED NON-BRIDGING SWITCH COMPRISING A HOUSING, A PAIR OF MAGNETIC POLE PIECES SEALED IN ONE END OF THE HOUSING, AN ARMATURE DISPOSED IN THE HOUSING AND HAVING A GENERALLY UNIPLANAR END PORTION COATED WITH MERCURY ON BOTH SIDES AND DISPOSED BETWEEN THE POLE PIECES, A GENERALLY SPHERICAL CONTACT MEMBER SECURED TO EACH OF THE POLE PIECES IN A POSITION ADJACENT THE END PORTION OF THE ARMATURE, THE TWO CONTACT MEMBERS BEING DISPOSED GENERALLY OPPOSITE EACH OTHER, A GENERALLY FLAT SURFACE FORMED ON EACH OF THE SPHERICAL CONTACT MEMBERS ADJACENT THE ARMATURE END PORTION, EACH OF SAID FLAT SURFACES BEING WETTABLE WITH MERCURY AND CARRYING A LAYER OF MERCURY, AND A LAYER OF MATERIAL THAT IS NOT WETTABLE WITH MERCURY COVERING THE ADJACENT SURFACES OF THE POLE PIECES AND ALL OF THE EXPOSED SURFACES OF THE CONTACT MEMBERS EXCEPT THE FLAT SURFACES SO THAT THE MERCURY ON THE FLAT SURFACES AND THE END PORTION PROVIDE MERCURY WETTED CONTACTING MEANS, THE LAYERS OF MATERIAL AND THE SPHERICAL CONTACT MEMBERS PREVENTING THE ACCUMULATION OF SUFFICIENT MERCURY TO PERMIT THE BRIDGING OF THE TWO CONTACT MEMBERS WHEN THE ARMATURE IS TRANSFERRED BETWEEN THE CONTACT MEMBERS.
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) | 1970-07-10 | 1971-01-09 | 1971-07-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-10 | 1975-01-09 | 1975-07-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-10 | 1979-01-09 | 1979-07-11 | $7700.00 | Window Closed / Lapsed |