Patent US1818095A successfully refreshed from Google Patents.
US5288300A
Expired / Lapsed
US
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Filter with a filter cassette
Assignee: THERMOPLAST-TECHNIK GESELLSCHAFT fur
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Filing: 1992-09-30
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Granted: 1994-02-22
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Expires: 2012-09-30
Abstract
Abstract A filter cassette having a fanfolded filter medium against which a thin wed strip is cemented on each fanfolded face by means of an edge gluing machine such that on the upstream side it projects slightly over the filter medium. To hold the filter cassette in the filter housing there is a clamping frame, which reaches over the edge of the filter cassette and forces the protruding, upstream side face of the outer strip into a seal of the filter housing and whose two opposing sides have a surface prong that reaches into the outermost fanfold of the filter medium and pushes it into another seal of the filter housing.
Inventors
- 👤 Theodor Muller
- 👤 Peter Hartung
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 20:01
CPC Classifications
B; B01; B01D; B01D46/00; B01D46/0001; B01D29/00; B01D29/01; B01D29/012; B01D29/05; B01D29/07; B01D29/50; B01D29/52; B01D46/0002; B01D46/0005; B01D46/10; B01D46/52; B01D46/521; B29; B29C; B29C65/00; B29C65/56; B29C65/58; B29C66/00; B29C66/50; B29C66/51; B29C66/54; B29C66/545; B01D2201/00; B01D2201/40; B01D2201/4084; B01D2265/00; B01D2265/02; B01D2265/028
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
131 words
A filter with a filter cassette adapted to be disposed in a filter housing, comprising a fanfolded filter medium extending in one plane; side members formed by thin walled outer strips cemented against the two staggered faces of the fanfolded filter medium with the downstream side faces of the outer strips protruding slightly beyond the filter medium; and a clamping frame to hold the filter cassette in the filter housing; said clamping frame reaching over the edge of the filter cassette and forcing the protruding downstream side faces of the outer strips into a pair of seals disposed in said housing, and having a surface prong on two opposing sides that reaches into the outermost fanfold of the filter medium and pushes it into another seal disposed in the filter housing.
Claim 2
Dependent Claim
131 words
A filter with a filter cassette adapted to be disposed in a filter housing, comprising a fanfolded filter medium extending in one plane; side members formed by thin walled outer strips cemented against the two staggered faces of the fanfolded filter medium with the downstream side faces of the outer strips protruding slightly beyond the filter medium; and a clamping frame to hold the filter cassette in the filter housing; said clamping frame reaching over the edge of the filter cassette and forcing the protruding downstream side faces of the outer strips into a pair of seals disposed in said housing, and having a surface prong on two opposing sides that reaches into the outermost fanfold of the filter medium and pushes it into another seal disposed in the filter 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) | 1997-02-21 | 1997-08-23 | 1998-02-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-02-21 | 2001-08-23 | 2002-02-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-02-21 | 2005-08-23 | 2006-02-22 | $7700.00 | Window Closed / Lapsed |