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US3208471A Expired / Lapsed US ⏱️ 0.0 years remaining

Fluid level control valve

Assignee: Culligan Inc
•
Filing: 1963-06-26
•
Granted: 1965-09-28
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Expires: 1983-06-26
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Abstract

No abstract record available.

Inventors

  • 👤 Poul J Olsen

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-06 00:44
CPC Classifications
F; F22; F22B; F22B37/00; F22B37/02; F22B37/42; F22B37/425; Y; Y10; Y10T; Y10T137/00; Y10T137/7287; Y10T137/7303; Y10T137/7313; Y10T137/7323; Y10T137/7358; Y10T137/7368; Y10T137/7371; Y10T137/7374

Claims Analysis

Total Claims: 2
Claim 1
Independent Claim 179 words
A FLUID LEVEL CONTROL VALVE COMPRISING A VALVE BODY HAVING UPPER AND LOWER CHAMBERS, SAID UPPER CHAMBER COMMUNICATING WITH A SOURCE OF ALTERNATE LIQUID PRESSURE AND VACUUM AND WITH THE LOWER CHAMBER, AND SAID LOWER CHAMBER COMMUNICATING WITH A FLOAT CHAMBER WITHIN A TANK, A DIAPHRAGM CHAMBER INTERPOSED BETWEEN SAID UPPER AND LOWER CHAMBERS AND HOUSING A FLEXIBLE DIAPHRAGM RECIPROCATING BETWEEN OPEN AND CLOSED POSITIONS TO CONTROL FLUID FLOW BETWEEN THE CHAMBERS, A GUIDE HOUSING DEPENDING BELOW THE DIAPHRAGM, A FLOAT ROD POSITIONED BELOW THE DIAPHRAGM AND EXTERIORLY OF THE VALVE BODY, A FLOAT ON SAID FLOAT ROD ADJACENT ONE END THEREOF, A GUIDE MEMBER SECURED TO THE OPPOSITE END OF THE FLOAT ROD ENCOMPASSING THE GUIDE HOUSING AND RECIPROCATING RELATIVE THERETO, A MAGNETIC ARMATURE MOUNTED FOR RECIPROCATION IN SAID GUIDE HOUSING TO ACTUATE SAID DIAPHRAGM, AN ARMATURE SPRING YIELDABLY BIASING SAID ARMATURE UPWARDLY, A MAGNET ENCOMPASSING AND SUPPORTED ON SAID GUIDE MEMBER ACTUATING SAID ARMATURE UPON RECIPROCATION OF THE GUIDE MEMBER RELATIVE TO SAID GUIDE HOUSING, AND A LOAD SPRING YIELDABLY BIASING SAID MAGNET AND GUIDE MEMBER DOWNWARDLY.
Claim 2
Dependent Claim 179 words
A FLUID LEVEL CONTROL VALVE COMPRISING A VALVE BODY HAVING UPPER AND LOWER CHAMBERS, SAID UPPER CHAMBER COMMUNICATING WITH A SOURCE OF ALTERNATE LIQUID PRESSURE AND VACUUM AND WITH THE LOWER CHAMBER, AND SAID LOWER CHAMBER COMMUNICATING WITH A FLOAT CHAMBER WITHIN A TANK, A DIAPHRAGM CHAMBER INTERPOSED BETWEEN SAID UPPER AND LOWER CHAMBERS AND HOUSING A FLEXIBLE DIAPHRAGM RECIPROCATING BETWEEN OPEN AND CLOSED POSITIONS TO CONTROL FLUID FLOW BETWEEN THE CHAMBERS, A GUIDE HOUSING DEPENDING BELOW THE DIAPHRAGM, A FLOAT ROD POSITIONED BELOW THE DIAPHRAGM AND EXTERIORLY OF THE VALVE BODY, A FLOAT ON SAID FLOAT ROD ADJACENT ONE END THEREOF, A GUIDE MEMBER SECURED TO THE OPPOSITE END OF THE FLOAT ROD ENCOMPASSING THE GUIDE HOUSING AND RECIPROCATING RELATIVE THERETO, A MAGNETIC ARMATURE MOUNTED FOR RECIPROCATION IN SAID GUIDE HOUSING TO ACTUATE SAID DIAPHRAGM, AN ARMATURE SPRING YIELDABLY BIASING SAID ARMATURE UPWARDLY, A MAGNET ENCOMPASSING AND SUPPORTED ON SAID GUIDE MEMBER ACTUATING SAID ARMATURE UPON RECIPROCATION OF THE GUIDE MEMBER RELATIVE TO SAID GUIDE HOUSING, AND A LOAD SPRING YIELDABLY BIASING SAID MAGNET AND GUIDE MEMBER DOWNWARDLY.

References Cited (Backward Citations)

US2752936A Cited
US2906285A Cited
US3062186A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1968-09-27 1969-03-29 1969-09-28 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1972-09-27 1973-03-29 1973-09-28 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1976-09-27 1977-03-29 1977-09-28 $7700.00 Window Closed / Lapsed

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