Patent US3282434A successfully refreshed from Google Patents.
US3282434A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spring-mounted filter element
Assignee: Pall Corp
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Filing: 1965-06-07
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Granted: 1966-11-01
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Expires: 1985-06-07
Abstract
No abstract record available.
Inventors
- 👤 David B Pall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 13:10
CPC Classifications
B; B01; B01D; B01D29/00; B01D29/11; B01D29/13; B01D29/15; B01D29/19
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
184 words
A FILTER UNIT COMPRISING A CYLINDRICAL FILTER ELEMENT, A FILTER HOUSING ENCLOSING THE FILTER ELEMENT TO DIRECT FLOW FLUID THERETHROUGH HAVING A HEAD PORTION AND A BOWL PORTION, AN INLET AND AN OUTLET IN SAID HEAD PORTION, FIRST SEAT MEANS IN THE HEAD OF THE HOUSING RECEIVING ONE END OF THE FILTER ELEMENT, SAID ONE END OF THE FILTER ELEMENT BEING IN COMMUNICATION WITH THE OUTLET, SECOND SEAT MEANS IN THE BOTTOM OF THE BOWL PORTION OF THE HOUSING, STUD MEANS MOUNTED AT THE BOTTOM OF THE FILTER ELEMENT, RETAINING MEANS ATTACHED AT THE LOWER END OF THE STUD MEANS, BEARING MEANS ROTATABLY MOUNTED ON THE STUD MEANS ABOVE THE RETAINING MEANS, SAID BEARING MEANS HAVING A CONICAL SURFACE, THE BOTTOM OF THE FILTER ELEMENT BEING FORMED WITH A CONICAL SURFACE TO ENGAGE THE CONICAL SURFACE ON THE BEARING, AND SPRING DISK WASHER MEANS POSITIONED BETWEEN THE BOTTOM OF THE FILTER ELEMENT AND THE BOTTOM OF THE BOWL PORTION, URGING THE FILTER ELEMENT TOWARD THE FIRST SEAT MEANS AND DEFORMABLE THEREBY, TO ENGAGE AND HOLD THE FILTER ELEMENT FIRMLY IN POSITION WITHIN THE HOUSING.
Claim 2
Dependent Claim
184 words
A FILTER UNIT COMPRISING A CYLINDRICAL FILTER ELEMENT, A FILTER HOUSING ENCLOSING THE FILTER ELEMENT TO DIRECT FLOW FLUID THERETHROUGH HAVING A HEAD PORTION AND A BOWL PORTION, AN INLET AND AN OUTLET IN SAID HEAD PORTION, FIRST SEAT MEANS IN THE HEAD OF THE HOUSING RECEIVING ONE END OF THE FILTER ELEMENT, SAID ONE END OF THE FILTER ELEMENT BEING IN COMMUNICATION WITH THE OUTLET, SECOND SEAT MEANS IN THE BOTTOM OF THE BOWL PORTION OF THE HOUSING, STUD MEANS MOUNTED AT THE BOTTOM OF THE FILTER ELEMENT, RETAINING MEANS ATTACHED AT THE LOWER END OF THE STUD MEANS, BEARING MEANS ROTATABLY MOUNTED ON THE STUD MEANS ABOVE THE RETAINING MEANS, SAID BEARING MEANS HAVING A CONICAL SURFACE, THE BOTTOM OF THE FILTER ELEMENT BEING FORMED WITH A CONICAL SURFACE TO ENGAGE THE CONICAL SURFACE ON THE BEARING, AND SPRING DISK WASHER MEANS POSITIONED BETWEEN THE BOTTOM OF THE FILTER ELEMENT AND THE BOTTOM OF THE BOWL PORTION, URGING THE FILTER ELEMENT TOWARD THE FIRST SEAT MEANS AND DEFORMABLE THEREBY, TO ENGAGE AND HOLD THE FILTER ELEMENT FIRMLY IN POSITION WITHIN THE HOUSING.
References Cited (Backward Citations)
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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) | 1969-10-31 | 1970-05-02 | 1970-11-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-31 | 1974-05-02 | 1974-11-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-31 | 1978-05-02 | 1978-11-01 | $7700.00 | Window Closed / Lapsed |