US3109079A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Three-way mercury switch
Assignee: General Electric Co
•
Filing: 1961-04-04
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Granted: 1963-10-29
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Expires: 1981-04-04
Abstract
No abstract record available.
Inventors
- 👤 Luther M Sheldon
- 👤 Gustaf R Lawson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 20:00
CPC Classifications
H; H01; H01H; H01H29/00; H01H29/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
165 words
A MERCURY BUTTON SWITCH COMPRISING A HOUSING OF INSULATING MATERIAL WITH A BUTTON WALL AND OPPOSED SIDE AND END WALLS, THE HOUSING HAVING AN OPEN TOP PORTION, TWO OF THE OPPOSING WALLS DEFINING VERTICAL GROOVES FOR SUPPORTING THE ENDS OF A PARALLEL PAIR OF BOWED SPRING CONTACTS, A SPRING CONTACT POSITIONED IN SAID HOUSING BY EACH PAIR OF VERTICAL GROOVES, THE CENTRAL PORTION OF EACH CONTACT HAVING AN EMBOSSMENT IN THE SHAPE OF A SPHERICAL SEGMENT EXTENDING TOWARD THE OTHER, A CENTER CONTACT POSITIONED MIDWAY BETWEEN SAID PARALLEL CONTACTS, SAID CENTER CONTACT HAVING EMBOSSMENTS IN THE SHAPE OF OPPOSITELY DISPOSED QUARTER-CIRCLE LANCED SPHERICAL SEGMENTS EXTENDING FROM EACH SIDE THEREOF COAXIAL WITH THE EMBOSSMENTS MAINTAINED IN ROTATABLE POSITION BY THE SPHERICAL EMBOSSMENTS, EACH SPHERICAL EMBOSSMENT MATING WITH A CONCAVITY IN THE SIDE OF A MERCURY BUTTON AND BEING OF A SIZE TO ALLOW MOVEMENT OF SAID BUTTONS WITH REFERENCE TO SAID EMBOSSMENTS, A SWITCH TRIGGER HAVING MEANS FOR ROTATABLY ENGAGING SAID BUTTONS, AND A MOUNTING STRAP
Claim 2
Dependent Claim
165 words
A MERCURY BUTTON SWITCH COMPRISING A HOUSING OF INSULATING MATERIAL WITH A BUTTON WALL AND OPPOSED SIDE AND END WALLS, THE HOUSING HAVING AN OPEN TOP PORTION, TWO OF THE OPPOSING WALLS DEFINING VERTICAL GROOVES FOR SUPPORTING THE ENDS OF A PARALLEL PAIR OF BOWED SPRING CONTACTS, A SPRING CONTACT POSITIONED IN SAID HOUSING BY EACH PAIR OF VERTICAL GROOVES, THE CENTRAL PORTION OF EACH CONTACT HAVING AN EMBOSSMENT IN THE SHAPE OF A SPHERICAL SEGMENT EXTENDING TOWARD THE OTHER, A CENTER CONTACT POSITIONED MIDWAY BETWEEN SAID PARALLEL CONTACTS, SAID CENTER CONTACT HAVING EMBOSSMENTS IN THE SHAPE OF OPPOSITELY DISPOSED QUARTER-CIRCLE LANCED SPHERICAL SEGMENTS EXTENDING FROM EACH SIDE THEREOF COAXIAL WITH THE EMBOSSMENTS MAINTAINED IN ROTATABLE POSITION BY THE SPHERICAL EMBOSSMENTS, EACH SPHERICAL EMBOSSMENT MATING WITH A CONCAVITY IN THE SIDE OF A MERCURY BUTTON AND BEING OF A SIZE TO ALLOW MOVEMENT OF SAID BUTTONS WITH REFERENCE TO SAID EMBOSSMENTS, A SWITCH TRIGGER HAVING MEANS FOR ROTATABLY ENGAGING SAID BUTTONS, AND A MOUNTING STRAP
References Cited (Backward Citations)
US2749413A
Cited
US2917610A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-10-28 | 1967-04-29 | 1967-10-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-10-28 | 1971-04-29 | 1971-10-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-10-28 | 1975-04-29 | 1975-10-29 | $7700.00 | Window Closed / Lapsed |