US3260816A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure switch
Assignee: MURDOCK ASSOCIATES Inc
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Filing: 1963-09-25
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Granted: 1966-07-12
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Expires: 1983-09-25
Abstract
No abstract record available.
Inventors
- 👤 Charles A Schad
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:20
CPC Classifications
H; H01; H01H; H01H35/00; H01H35/24; H01H35/34
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
108 words
A PRESSURE SWITCH COMPRISING: A BODY MEMBER DIVIDED BY A PARTITION WALL INTO AN UPPER MEASURING CHAMBER AND A LOWER CHAMBER, SAID UPPER MEASURING CHAMBER HAVING A LEVEL INDICATING OPENING THEREIN; A DIAPHRAG, DIVIDING SAID LOWER CHAMBER INTO A LOWER PRESSURE RECEIVING CHAMBER AND AN UPPER DAMPENING CHAMBER, SAID BODY MEMBER HAVING A PRESSURE PASSAGE OPENING AT THE LOWER END THEREOF COMMUNICATING WITH SAID PRESSURE RECEIVING CHAMBER, SAID PARTITION WALL HAVING A SHAFT RECEIVING OPENING AND A DAMPENING FLUID PASSAGEWAY THEREIN COMMUNICATING SAID DAMPENING CHAMBER WITH SAID MEASURING CHAMBER; A SWITCH MEANS SUPPORT TO SAID UPPER CHAMBE; A SHAFT HAVING THE LOWER END THEREOF AFFIXED TO SAID DIA-
Claim 2
Dependent Claim
108 words
A PRESSURE SWITCH COMPRISING: A BODY MEMBER DIVIDED BY A PARTITION WALL INTO AN UPPER MEASURING CHAMBER AND A LOWER CHAMBER, SAID UPPER MEASURING CHAMBER HAVING A LEVEL INDICATING OPENING THEREIN; A DIAPHRAG, DIVIDING SAID LOWER CHAMBER INTO A LOWER PRESSURE RECEIVING CHAMBER AND AN UPPER DAMPENING CHAMBER, SAID BODY MEMBER HAVING A PRESSURE PASSAGE OPENING AT THE LOWER END THEREOF COMMUNICATING WITH SAID PRESSURE RECEIVING CHAMBER, SAID PARTITION WALL HAVING A SHAFT RECEIVING OPENING AND A DAMPENING FLUID PASSAGEWAY THEREIN COMMUNICATING SAID DAMPENING CHAMBER WITH SAID MEASURING CHAMBER; A SWITCH MEANS SUPPORT TO SAID UPPER CHAMBE; A SHAFT HAVING THE LOWER END THEREOF AFFIXED TO SAID DIA-
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) | 1969-07-11 | 1970-01-10 | 1970-07-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-07-11 | 1974-01-10 | 1974-07-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-07-11 | 1978-01-10 | 1978-07-12 | $7700.00 | Window Closed / Lapsed |