US3293390A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bimetal operated coolant level switch
Assignee: Motors Liquidation Co
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Filing: 1965-01-26
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Granted: 1966-12-20
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Expires: 1985-01-26
Abstract
No abstract record available.
Inventors
- 👤 Willard C Shaw
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:29
CPC Classifications
H; H01; H01H; H01H35/00; H01H35/18; H01H35/183
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
154 words
A TEMPERATURE SENSITIVE SWITCH COMPRISING: A SWITCH BODY HAVING A THREADED BODY ADAPTED TO BE THREADED INTO A WALL OF A FLUID CONTAINER; A FIRST TERMINAL CARRIED BY SAID SWITCH BODY AND ADAPTED TO CONDUCTIVELY ENGAGE A LEAD TO A POWER SOURCE; A SECOND TERMINAL CARRIED BY SAID SWITCH BODY AND ADAPTED TO CONDUCTIVELY ENGAGE AN INDICATING LAMP; A BIMETALLIC ELEMENT CARRIED BY SAID SWITH BODY AND HAVING A PORTION ARRANGED TO BE SUSPENDED INTO A FLUID PASSAGE, SAID BIMETALLIC ELEMENT BEING DEFLECTABLE SUBSTANTIALLY ALONG ITS LONGITUDINAL AXIS IN RESPONSE TO TEMPERATURE CHANGES OF FLUID IN THE FLUID PASSAGE; FIRST MOVABLE CONTACT MEANS CARRIED BY SAID BIMETALLIC ELEMENT AND BEING DRIVABLE INTO ENGAGEMENT WITH SAID FIRST TERMINAL; SECOND CONTACT MEANS CARRIED BY SAID SWITCH BODY AND BEING GROUNDED THERETHROUGH; AND RESILIENT MEANS ENGAGING SAID BIMETALLIC ELEMENT INSULATING AN AREA OF SAID SWITCH BODY IN WHICH THE SWITCHING TAKES PLACE AND ADAPTED TO BE DRIVEN
Claim 2
Dependent Claim
154 words
A TEMPERATURE SENSITIVE SWITCH COMPRISING: A SWITCH BODY HAVING A THREADED BODY ADAPTED TO BE THREADED INTO A WALL OF A FLUID CONTAINER; A FIRST TERMINAL CARRIED BY SAID SWITCH BODY AND ADAPTED TO CONDUCTIVELY ENGAGE A LEAD TO A POWER SOURCE; A SECOND TERMINAL CARRIED BY SAID SWITCH BODY AND ADAPTED TO CONDUCTIVELY ENGAGE AN INDICATING LAMP; A BIMETALLIC ELEMENT CARRIED BY SAID SWITH BODY AND HAVING A PORTION ARRANGED TO BE SUSPENDED INTO A FLUID PASSAGE, SAID BIMETALLIC ELEMENT BEING DEFLECTABLE SUBSTANTIALLY ALONG ITS LONGITUDINAL AXIS IN RESPONSE TO TEMPERATURE CHANGES OF FLUID IN THE FLUID PASSAGE; FIRST MOVABLE CONTACT MEANS CARRIED BY SAID BIMETALLIC ELEMENT AND BEING DRIVABLE INTO ENGAGEMENT WITH SAID FIRST TERMINAL; SECOND CONTACT MEANS CARRIED BY SAID SWITCH BODY AND BEING GROUNDED THERETHROUGH; AND RESILIENT MEANS ENGAGING SAID BIMETALLIC ELEMENT INSULATING AN AREA OF SAID SWITCH BODY IN WHICH THE SWITCHING TAKES PLACE AND ADAPTED TO BE DRIVEN
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) | 1969-12-19 | 1970-06-20 | 1970-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-19 | 1974-06-20 | 1974-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-19 | 1978-06-20 | 1978-12-20 | $7700.00 | Window Closed / Lapsed |