US3270153A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Humidity actuated switch
Assignee: Individual
•
Filing: 1963-07-25
•
Granted: 1966-08-30
•
Expires: 1983-07-25
Abstract
No abstract record available.
Inventors
- 👤 John D Buchanan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 10:50
CPC Classifications
H; H01; H01H; H01H35/00; H01H35/42
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
133 words
AN ELECTRICAL SWITCH UNIT INCLUDING A RESILIENT CONTACT STRIP PROVIDED WITH AN ELECTRICAL CONTACT ON ONE SIDE THEREOF; A STATIONARY ELECTRICAL CONTACT FOR COOPERATING WITH THE ELECTRICAL CONTACT ON SAID RESILIENT CONTACT STRIP; SAID RESILIENT CONTACT STRIP BEING PRESTRESSED SUFFICIENTLY TO CAUSE ITS ELECTRICAL CONTACT TO NORMALLY ENGAGE SAID STATIONARY ELECTRICAL CONTACT; A PRESTRESED SPRING STRIP ANCHORED AT ONE END; SAID PRESTRESSED SPRING STRIP BEING CAPABLE OF SNAP ACTION TO STRIKE SAID RESILIENT CONTACT STRIP AND DRIVE IT OUT OF ITS AFOREMENTIONED NORMAL POSITION; AND MEANS FOR ENGAGING SAID PRESTRESSED SPRING STRIP AND MOVING IT INTO SNAP ACTION; SAID PRESTRESSED SPRING STRIP UNDERLYING SAID RESILIENT CONTACT STRIP AND PROVIDED WITH AN INTEGRALLY-FORMED DOWNWARDLY-BOWED TONGUE; AND TONGUE BEING PRESTRESSED AND WITH ITS OUTER END SECURED AGAINST MOVEMENT WITH RESPECT TO SAID PRESTRESSED SPRING STRIP.
Claim 2
Dependent Claim
133 words
AN ELECTRICAL SWITCH UNIT INCLUDING A RESILIENT CONTACT STRIP PROVIDED WITH AN ELECTRICAL CONTACT ON ONE SIDE THEREOF; A STATIONARY ELECTRICAL CONTACT FOR COOPERATING WITH THE ELECTRICAL CONTACT ON SAID RESILIENT CONTACT STRIP; SAID RESILIENT CONTACT STRIP BEING PRESTRESSED SUFFICIENTLY TO CAUSE ITS ELECTRICAL CONTACT TO NORMALLY ENGAGE SAID STATIONARY ELECTRICAL CONTACT; A PRESTRESED SPRING STRIP ANCHORED AT ONE END; SAID PRESTRESSED SPRING STRIP BEING CAPABLE OF SNAP ACTION TO STRIKE SAID RESILIENT CONTACT STRIP AND DRIVE IT OUT OF ITS AFOREMENTIONED NORMAL POSITION; AND MEANS FOR ENGAGING SAID PRESTRESSED SPRING STRIP AND MOVING IT INTO SNAP ACTION; SAID PRESTRESSED SPRING STRIP UNDERLYING SAID RESILIENT CONTACT STRIP AND PROVIDED WITH AN INTEGRALLY-FORMED DOWNWARDLY-BOWED TONGUE; AND TONGUE BEING PRESTRESSED AND WITH ITS OUTER END SECURED AGAINST MOVEMENT WITH RESPECT TO SAID PRESTRESSED SPRING STRIP.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-08-29 | 1970-02-28 | 1970-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-29 | 1974-02-28 | 1974-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-29 | 1978-02-28 | 1978-08-30 | $7700.00 | Window Closed / Lapsed |