Patent US3317045A successfully refreshed from Google Patents.
US3317045A
Expired / Lapsed
US
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Filter unit with radially compressed element
Assignee: MOTOR GUARD CORP
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Filing: 1963-09-23
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Granted: 1967-05-02
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Expires: 1983-09-23
Abstract
No abstract record available.
Inventors
- 👤 William J Dummler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 09:45
CPC Classifications
B; B01; B01D; B01D35/00; B01D35/14; B01D35/147; B01D29/00; B01D29/01; B01D29/05; B01D29/07; B01D29/072
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
134 words
A FILTER UNIT WHICH COMPRISES A HOUSING COMPOSED OF SEPARATE SECTIONS ARRANGED FOR SEALING JUNCTURE, A COMPRESSIBLE ROLL OF TISSUE FILTER ELEMENT IN SAID HOUSING, SAID HOUSING BEING ARRANGED SO THAT THE SEPARATION OF SAID SEPARATE SECTIONS EXPOSES A WALL OF SAID FILTER ELEMENT EXTENDING IN THE GENERAL DIRECTION OF THE ENDWISE LONGITUDINAL AXIS OF SAID HOUSING, AN INLET TO SAID HOUSING ADJACENT THE UPSTREAM PORTION OF SAID FILTER ELEMENT, AN OUTLET TO SAID HOUSING ADJACENT THE DOWNSTREAM PORTION OF SAID FILTER ELEMENT, AND MEANS INTERCONNECTING SAID SEPARATE SECTIONS OF SAID HOUSING AND ADAPTED TO URGE SAID SEPARATE SECTIONS INTO SEALING JUNCTURE FOR EFFECTING COMPRESSION, WHEREBY SAID FILTER ELEMENT IS COMPRESSED IN A DIRECTION SUBSTANTIALLY PERPENDICULAR TO THE ENDWISE LONGITUDINAL AXIS OF SAID HOUSING AND SUBSTANTIALLY ENTIRELY FILLS THE RADIAL CROSS-SECTION OF SAID HOUSING.
Claim 2
Dependent Claim
134 words
A FILTER UNIT WHICH COMPRISES A HOUSING COMPOSED OF SEPARATE SECTIONS ARRANGED FOR SEALING JUNCTURE, A COMPRESSIBLE ROLL OF TISSUE FILTER ELEMENT IN SAID HOUSING, SAID HOUSING BEING ARRANGED SO THAT THE SEPARATION OF SAID SEPARATE SECTIONS EXPOSES A WALL OF SAID FILTER ELEMENT EXTENDING IN THE GENERAL DIRECTION OF THE ENDWISE LONGITUDINAL AXIS OF SAID HOUSING, AN INLET TO SAID HOUSING ADJACENT THE UPSTREAM PORTION OF SAID FILTER ELEMENT, AN OUTLET TO SAID HOUSING ADJACENT THE DOWNSTREAM PORTION OF SAID FILTER ELEMENT, AND MEANS INTERCONNECTING SAID SEPARATE SECTIONS OF SAID HOUSING AND ADAPTED TO URGE SAID SEPARATE SECTIONS INTO SEALING JUNCTURE FOR EFFECTING COMPRESSION, WHEREBY SAID FILTER ELEMENT IS COMPRESSED IN A DIRECTION SUBSTANTIALLY PERPENDICULAR TO THE ENDWISE LONGITUDINAL AXIS OF SAID HOUSING AND SUBSTANTIALLY ENTIRELY FILLS THE RADIAL CROSS-SECTION OF SAID HOUSING.
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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) | 1970-05-01 | 1970-10-31 | 1971-05-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-05-01 | 1974-10-31 | 1975-05-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-05-01 | 1978-10-31 | 1979-05-02 | $7700.00 | Window Closed / Lapsed |