US3372254A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Snap-acting switch means
Assignee: LYNDON WALKUP BURCH
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Filing: 1966-09-22
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Granted: 1968-03-05
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Expires: 1986-09-22
Abstract
No abstract record available.
Inventors
- 👤 Burch Hadley Keys
- 👤 Burch Lyndon Walkup
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 17:24
CPC Classifications
H; H01; H01H; H01H5/00; H01H5/04; H01H5/18; H01H36/00; H01H50/00; H01H50/16; H01H50/18; H01H50/30; H01H50/54; H01H50/56; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18888; Y10T74/18896
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
172 words
A SNAP-ACTING BLADE FORMED OF THIN RESILIENT MATERIAL AND COMPRISING A CENTRAL LEG, TWO TENSION LEGS EACH HAVING MEANS THEREON FORMING A MOUNTING POINT FOR A STRESS PRODUCING ELEMENT, AND TWO AMPLIFIER LEGS, ONE OF SAID TENSION LEGS CONNECTED TO ONE SIDE, NEAR ONE END OF THE CENTRAL LEG, THE OTHER TENSION LEG CONNECTED TO THE OTHER SIDE AND NEAR THE OTHER END OF THE CENTRAL LEG, THE MOUNTING POINTS OF SAID TENSION LEGS SO LOCATED WITH RESPECT TO SAID BLADE AS TO PERMIT THE APPLICATION OF TENSIONAL STRESS TO SAID BLADE TO CAUSE IT TO WARP, EACH AMPLIFIER LEG CONNECTED TO THE BLADE IN A LOCATION TO PERMIT AMPLIFICATION OF THE WARPAGE OF SAID BLADE, AND SO CONNECTED THAT WHEN ONE AMPLIFIER LEG IS WARPED TO ONE SIDE OF THE BLADE, THE OTHER LEG IS WARPED TO THE OTHER SIDE, AND VICE VERSA, SAID TENSION LEGS AND SAID AMPLIFIER LEGS SUBSTANTIALLY DISPOSED WITHIN A CIRCLE CENTERED ON THE MIDDLE OF SAID CENTRAL LEG, PROJECTED THROUGH THE ENDS OF SAID CENTRAL LEG.
Claim 2
Dependent Claim
172 words
A SNAP-ACTING BLADE FORMED OF THIN RESILIENT MATERIAL AND COMPRISING A CENTRAL LEG, TWO TENSION LEGS EACH HAVING MEANS THEREON FORMING A MOUNTING POINT FOR A STRESS PRODUCING ELEMENT, AND TWO AMPLIFIER LEGS, ONE OF SAID TENSION LEGS CONNECTED TO ONE SIDE, NEAR ONE END OF THE CENTRAL LEG, THE OTHER TENSION LEG CONNECTED TO THE OTHER SIDE AND NEAR THE OTHER END OF THE CENTRAL LEG, THE MOUNTING POINTS OF SAID TENSION LEGS SO LOCATED WITH RESPECT TO SAID BLADE AS TO PERMIT THE APPLICATION OF TENSIONAL STRESS TO SAID BLADE TO CAUSE IT TO WARP, EACH AMPLIFIER LEG CONNECTED TO THE BLADE IN A LOCATION TO PERMIT AMPLIFICATION OF THE WARPAGE OF SAID BLADE, AND SO CONNECTED THAT WHEN ONE AMPLIFIER LEG IS WARPED TO ONE SIDE OF THE BLADE, THE OTHER LEG IS WARPED TO THE OTHER SIDE, AND VICE VERSA, SAID TENSION LEGS AND SAID AMPLIFIER LEGS SUBSTANTIALLY DISPOSED WITHIN A CIRCLE CENTERED ON THE MIDDLE OF SAID CENTRAL LEG, PROJECTED THROUGH THE ENDS OF SAID CENTRAL LEG.
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) | 1971-03-05 | 1971-09-04 | 1972-03-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-03-05 | 1975-09-04 | 1976-03-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-03-05 | 1979-09-04 | 1980-03-05 | $7700.00 | Window Closed / Lapsed |