US3907688A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve for a filter
Assignee: Unifrax I LLC
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Filing: 1973-08-03
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Granted: 1975-09-23
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Expires: 1993-08-03
Abstract
Abstract In a valve for a filter, a valve body includes an opening and a pair of conduits communicating therewith. A gate which is rotatably mounted within the opening is provided with a by-pass passage for the flow of fluid between the conduits when the gate is in a by-pass position and an inner chamber and an outer chamber for the flow of fluid through a filter chamber when the gate is in a filtering position.
Inventors
- 👤 Sam Close
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 12:04
CPC Classifications
F; F16; F16K; F16K11/00; F16K11/02; F16K11/08; F16K11/083; B; B01; B01D; B01D35/00; B01D35/02; B01D35/04; B01D35/043; B01D35/14; B01D35/147; B01D2201/00; B01D2201/30; B01D2201/301; B01D2201/302; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86493; Y10T137/86863; Y10T137/86871
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
228 words
A VALVE FOR USE WITH A FILTER, SAID VALVE COMPRISING A VALVE BODY HAVING A GENERALLY FRUSTOCONICAL OPENING FORMED THEREIN AND CONVERGING TOWARD THE TOP THEREOF, A PAIR OF CONDUCTS OPENING INTO SAID VALVE BODY AND IN FLUID COMMUNICATION WITH SAID OPENING AND DEFINING AN INLET PORT AND AN OUTLET PORT IN SAID VALVE BODY, A GATE HAVING A GENERALLY FRUSTO-CONICAL OUTER WALL CONVERGING TOWARD THE TOP THEREOF AND BEING DISPOSED IN SAID OPENING AND INTERFITTING WITH SAID VALVE BODY FOR TOTATION THEREIN, SAID GATE INCLUDING A GENERALLY TUBULAR INNER WALL DISPOSED CENTRALLY OF SAID GATE AND COAXIAL WITH THE AXIS ABOUT WHICH SAID GATE ROTATES WITHIN SAID VALVE BODY, AN INLET CHANNEL ALIGNABLE WITH SAID INLET PORT AND ADAPTED TO BE IN FLUID COMMUNICATION WITH SAID FILTER, AND AN OUTLET CHANNEL IN SAID INNER WALL INTERMEDIATE THE ENDS THEREOF AND ALIGNABLE WITH SAID OUTLET PORT, SAID INNER WALL HAVING ITS LOWER END UPON AND ADAPTED TO BE IN FLUID COMMUNICATION WITH SAID FILTER AND ITS UPPER END CLOSED BY A TOP PORTION FORMING IN SAID INNER WALL AN ELONGATED SURGE CHAMBER BETWEEN SAID OUTLET CHANNEL AND TOP PORTION AND IN FLUID COMMUNICATION WITH SAID OUTLET CHANNEL, AND SAID VALVE BODY INCLUDING SEAL RECEIVING GROOVES FORMED AROUND SAID INLET PIRT AND OUTLET PORT AND HAVING SEALS THEREIN DISPOSED IN SEALING RELATIONSHIP WITH SAID OUTER WALL OF SAID GATE.
Claim 2
Dependent Claim
228 words
A VALVE FOR USE WITH A FILTER, SAID VALVE COMPRISING A VALVE BODY HAVING A GENERALLY FRUSTOCONICAL OPENING FORMED THEREIN AND CONVERGING TOWARD THE TOP THEREOF, A PAIR OF CONDUCTS OPENING INTO SAID VALVE BODY AND IN FLUID COMMUNICATION WITH SAID OPENING AND DEFINING AN INLET PORT AND AN OUTLET PORT IN SAID VALVE BODY, A GATE HAVING A GENERALLY FRUSTO-CONICAL OUTER WALL CONVERGING TOWARD THE TOP THEREOF AND BEING DISPOSED IN SAID OPENING AND INTERFITTING WITH SAID VALVE BODY FOR TOTATION THEREIN, SAID GATE INCLUDING A GENERALLY TUBULAR INNER WALL DISPOSED CENTRALLY OF SAID GATE AND COAXIAL WITH THE AXIS ABOUT WHICH SAID GATE ROTATES WITHIN SAID VALVE BODY, AN INLET CHANNEL ALIGNABLE WITH SAID INLET PORT AND ADAPTED TO BE IN FLUID COMMUNICATION WITH SAID FILTER, AND AN OUTLET CHANNEL IN SAID INNER WALL INTERMEDIATE THE ENDS THEREOF AND ALIGNABLE WITH SAID OUTLET PORT, SAID INNER WALL HAVING ITS LOWER END UPON AND ADAPTED TO BE IN FLUID COMMUNICATION WITH SAID FILTER AND ITS UPPER END CLOSED BY A TOP PORTION FORMING IN SAID INNER WALL AN ELONGATED SURGE CHAMBER BETWEEN SAID OUTLET CHANNEL AND TOP PORTION AND IN FLUID COMMUNICATION WITH SAID OUTLET CHANNEL, AND SAID VALVE BODY INCLUDING SEAL RECEIVING GROOVES FORMED AROUND SAID INLET PIRT AND OUTLET PORT AND HAVING SEALS THEREIN DISPOSED IN SEALING RELATIONSHIP WITH SAID OUTER WALL OF SAID GATE.
Claim 3
Dependent Claim
62 words
The valve of claim 1 in combination with said filter which includes a depending tank mounted on said valve body, and annular filter media disposed within said bowl to form therebetween an outer annular chamber in fluid communication with said inlet channel and within said filter media an inner axial chamber in fluid communication with said lower end of said inner wall.
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) | 1978-09-22 | 1979-03-24 | 1979-09-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-22 | 1983-03-24 | 1983-09-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-22 | 1987-03-24 | 1987-09-23 | $7700.00 | Window Closed / Lapsed |