Patent US5225845A successfully refreshed from Google Patents.
Patent US3187136A successfully refreshed from Google Patents.
US3187136A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multiple pressure switch construction
Assignee: Robertshaw Controls Co
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Filing: 1961-10-16
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Granted: 1965-06-01
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Expires: 1981-10-16
Abstract
No abstract record available.
Inventors
- 👤 Corder James Bernard
- 👤 Herrman Jack Ellsworth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 14:41
CPC Classifications
H; H01; H01H; H01H35/00; H01H35/24; H01H35/26; H01H35/2657; H01H35/2607; H01H35/2614
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
107 words
A COMBINATION COMPRISING: A CASING HAVING A FLUID PASSAGE OPENING; A FLEXIBLE DIAPHRAGM SECURED TO SAID CASING; A RIGID DISC HAVING A CENTRAL PART AND BEING ATTACHED TO ONE SIDE OF SAID DIAPHRAGM; A T-SHAPED FLEXIBLE BALANCE MEMBER HAVING A CROSS MEMBER AND A FOOT MEMBER, SAID CROSS MEMBER HAVING A CENTRAL FULCRUM PART AND OPPOSITE PUSHING SIDES, SAID FOOT MEMBER BEING SECURED TO SAID CASING; AN ACTUATING MEMBER SPACING AND FORMING ACTUATING MEANS BETWEEN SAID CENTRAL PART OF SAID DISC AND SAID CENTRAL FULCRUM PART OF SAID CROSS MEMBER; A FIRST PRESSURE CONNECTOR AND A SECOND PRESSURE CONNECTOR EACH HAVING ONE END ENGAGED AND ACTUATED RESPECTIVELY
Claim 2
Dependent Claim
107 words
A COMBINATION COMPRISING: A CASING HAVING A FLUID PASSAGE OPENING; A FLEXIBLE DIAPHRAGM SECURED TO SAID CASING; A RIGID DISC HAVING A CENTRAL PART AND BEING ATTACHED TO ONE SIDE OF SAID DIAPHRAGM; A T-SHAPED FLEXIBLE BALANCE MEMBER HAVING A CROSS MEMBER AND A FOOT MEMBER, SAID CROSS MEMBER HAVING A CENTRAL FULCRUM PART AND OPPOSITE PUSHING SIDES, SAID FOOT MEMBER BEING SECURED TO SAID CASING; AN ACTUATING MEMBER SPACING AND FORMING ACTUATING MEANS BETWEEN SAID CENTRAL PART OF SAID DISC AND SAID CENTRAL FULCRUM PART OF SAID CROSS MEMBER; A FIRST PRESSURE CONNECTOR AND A SECOND PRESSURE CONNECTOR EACH HAVING ONE END ENGAGED AND ACTUATED RESPECTIVELY
References Cited (Backward Citations)
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Cited
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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) | 1968-05-31 | 1968-11-30 | 1969-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-05-31 | 1972-11-30 | 1973-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-05-31 | 1976-11-30 | 1977-06-01 | $7700.00 | Window Closed / Lapsed |