US3262564A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dual valve, dual filter element, constant flow filter assembly
Assignee: Pall Corp
•
Filing: 1963-05-24
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Granted: 1966-07-26
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Expires: 1983-05-24
Abstract
No abstract record available.
Inventors
- 👤 David B Pall
- 👤 Bernard F Silverwater
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 09:39
CPC Classifications
B; B01; B01D; B01D29/00; B01D29/11; B01D29/13; B01D29/15; B01D29/21; B01D29/50; B01D29/56; B01D29/58; B01D29/60; B01D29/606; B01D29/88; B01D29/90; B01D35/00; B01D35/14; B01D35/143; B01D35/147; B01D35/157; B01D2201/00; B01D2201/20; B01D2201/204; B01D2201/208; Y; Y10; Y10S; Y10S210/00; Y10S210/13; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2559; Y10T137/2574; Y10T137/2579
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
158 words
A FLOW CONTROL VALVE ASSEMBLY FOR MOUNTING IN A HOUSING HAVING A FIRST LINE AND A SECOND LINE TO CONTROL FLOW IN BOTH RESPECTIVE TO CHANGES IN FLOW VOLUME COMPRISING, IN COMBINATION, A SPRING DISC VALVE AND ASSOCIATED SEALING MEANS AND A VENTURI, THE SPRING DISC BEING RECIPROCABLE, AND BIASED AGAINST A VALVE SEAT, THE VENTURI PERMITTING FLUID FLOW IN THE FIRST LINE THROUGH THE VENTURI AT ALL TIMES, AND THE SPRING DISC VALVE BEING ADAPTED TO FLEX BETWEEN OPEN AND CLOSED POSITIONS TO OPEN AND CLOSE OFF FLOW TO THE SECOND LINE, A PRESSURE CHAMBER CLOSED OFF BY THE DISC AND SAID SEALING MEANS AND COMMUNICATING ONLY WITH THE VENTURI, THE VENTURI BEING DIMENSIONED TO INCREASE THE VELOCITY OF FLOW THERETHROUGH FROM THE ONE SIDE OF THE OTHER SIDE THEREOF, AND THEREBY REDUCE THE STATIC PRESSURE AT THE VENTURI AND IN THE PRESSURE CHAMBER, AND THE SPRING DISC BEING FLEXED TO AN OPEN POSITION WHENEVER UPON IN-
Claim 2
Dependent Claim
158 words
A FLOW CONTROL VALVE ASSEMBLY FOR MOUNTING IN A HOUSING HAVING A FIRST LINE AND A SECOND LINE TO CONTROL FLOW IN BOTH RESPECTIVE TO CHANGES IN FLOW VOLUME COMPRISING, IN COMBINATION, A SPRING DISC VALVE AND ASSOCIATED SEALING MEANS AND A VENTURI, THE SPRING DISC BEING RECIPROCABLE, AND BIASED AGAINST A VALVE SEAT, THE VENTURI PERMITTING FLUID FLOW IN THE FIRST LINE THROUGH THE VENTURI AT ALL TIMES, AND THE SPRING DISC VALVE BEING ADAPTED TO FLEX BETWEEN OPEN AND CLOSED POSITIONS TO OPEN AND CLOSE OFF FLOW TO THE SECOND LINE, A PRESSURE CHAMBER CLOSED OFF BY THE DISC AND SAID SEALING MEANS AND COMMUNICATING ONLY WITH THE VENTURI, THE VENTURI BEING DIMENSIONED TO INCREASE THE VELOCITY OF FLOW THERETHROUGH FROM THE ONE SIDE OF THE OTHER SIDE THEREOF, AND THEREBY REDUCE THE STATIC PRESSURE AT THE VENTURI AND IN THE PRESSURE CHAMBER, AND THE SPRING DISC BEING FLEXED TO AN OPEN POSITION WHENEVER UPON IN-
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) | 1969-07-25 | 1970-01-24 | 1970-07-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-07-25 | 1974-01-24 | 1974-07-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-07-25 | 1978-01-24 | 1978-07-26 | $7700.00 | Window Closed / Lapsed |