US3295680A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Filter assembly having a by-pass valve
Assignee: Dollinger Corp
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Filing: 1964-07-01
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Granted: 1967-01-03
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Expires: 1984-07-01
Abstract
No abstract record available.
Inventors
- 👤 Paul F Wilber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:45
CPC Classifications
F; F16; F16N; F16N39/00; F16N39/06; B; B01; B01D; B01D29/00; B01D29/11; B01D29/13; B01D29/15; B01D29/21; B01D35/00; B01D35/14; B01D35/147
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
187 words
A FILTER COMPRISING (A) A POROUS FILTER ELEMENT HAVING AN AXIAL BORE, AND FORMED WITH AXIALLY-EXTENDING PLEATS WHICH PROJECT RADIALLY OUTWARDLY FROM SAID BORE, (B) A PAIR OF END CAPS SECURED OVER OPPOSITE ENDS, RESPECTIVELY, OF SAID ELEMENT AND HAVING CENTRAL OPENINGS ALIGNED AXIALLY WITH SAID BORE, (C) A COUPLING SECURED CENTRALLY TO ONE OF SAID CAPS FOR CONNECTING ITS OPENING AND SAID BORE WITH THE SUCTION SIDE OF A PUMP, OPERABLE TO PUMP FLUID THROUGH SAID ELEMENT, (D) A RING SEALINGLY SECURED IN THE CENTRAL OPENING OF THE OTHER OF SAID CAPS IN AXIAL ALIGNMENT WITH SAID COUPLING AND HAVING ON ITS INNER END AN INTEGRAL, RADIALLY INWARDLY PROJECTING RING FLANGE, (E) A RIGID RIB EXTENDING DIAMETRALLY ACROSS SAID RING TO SEAT AT OPPOSITE ENDS AGAINST THE OUTER FACE OF SAID FLANGE, (F) A DISC-SHAPED VALVE IN SAID BORE TO BE SEATED AROUND ITS MARGINAL EDGE AGAINST THE INSIDE FACE OF SAID FLANGE TO CLOSE THE RING AND THE CENTRAL OPENING IN SAID OTHER CAP, WHEREBY WHEN SAID VALVE IS CLOSED, FLUID MAY PASS ONLY RADIALLY THROUGH THE PORES IN SAID ELEMENT TO BE FILTERED THEREBY,
Claim 2
Dependent Claim
187 words
A FILTER COMPRISING (A) A POROUS FILTER ELEMENT HAVING AN AXIAL BORE, AND FORMED WITH AXIALLY-EXTENDING PLEATS WHICH PROJECT RADIALLY OUTWARDLY FROM SAID BORE, (B) A PAIR OF END CAPS SECURED OVER OPPOSITE ENDS, RESPECTIVELY, OF SAID ELEMENT AND HAVING CENTRAL OPENINGS ALIGNED AXIALLY WITH SAID BORE, (C) A COUPLING SECURED CENTRALLY TO ONE OF SAID CAPS FOR CONNECTING ITS OPENING AND SAID BORE WITH THE SUCTION SIDE OF A PUMP, OPERABLE TO PUMP FLUID THROUGH SAID ELEMENT, (D) A RING SEALINGLY SECURED IN THE CENTRAL OPENING OF THE OTHER OF SAID CAPS IN AXIAL ALIGNMENT WITH SAID COUPLING AND HAVING ON ITS INNER END AN INTEGRAL, RADIALLY INWARDLY PROJECTING RING FLANGE, (E) A RIGID RIB EXTENDING DIAMETRALLY ACROSS SAID RING TO SEAT AT OPPOSITE ENDS AGAINST THE OUTER FACE OF SAID FLANGE, (F) A DISC-SHAPED VALVE IN SAID BORE TO BE SEATED AROUND ITS MARGINAL EDGE AGAINST THE INSIDE FACE OF SAID FLANGE TO CLOSE THE RING AND THE CENTRAL OPENING IN SAID OTHER CAP, WHEREBY WHEN SAID VALVE IS CLOSED, FLUID MAY PASS ONLY RADIALLY THROUGH THE PORES IN SAID ELEMENT TO BE FILTERED THEREBY,
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) | 1970-01-02 | 1970-07-04 | 1971-01-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-02 | 1974-07-04 | 1975-01-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-02 | 1978-07-04 | 1979-01-03 | $7700.00 | Window Closed / Lapsed |