US4285814A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Filter bag clamp assembly
Assignee: Pall Filter Specialists Inc
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Filing: 1979-12-31
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Granted: 1981-08-25
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Expires: 1999-12-31
Abstract
Abstract A bag clamp assembly for a liquid filter wherein the clamp part of the assembly includes a cap and ring secured together by lock parts. The filter bag of the assembly is clamped between the rim and the cap to form a liquid-tight seal about the opening edge of the bag.
Inventors
- 👤 Howard W. Morgan, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 01:34
CPC Classifications
B; B01; B01D; B01D29/00; B01D29/11; B01D29/13; B01D29/23; B01D29/27; B01D2201/00; B01D2201/34
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
209 words
A bag clamp assembly for use in a liquid filter, said assembly comprising a ring, said ring being defined by an outer wall and an inner wall, said inner wall including a lower annular flange extending radially inwardly from the inner wall, a cap fittable within said ring, said cap having a substantially solid body and including a lateral circumferential edge, said cap body including inner and outer faces and having a bore therethrough extending from said inner face to said outer face, said bore constituting a liquid inlet, one of said ring outer wall and said cap lateral edge carrying a plurality of pin means extending radially therefrom, the other of said ring outer wall and said cap lateral edge having a plurality of lock slots formed therein, said pin means for co-operating with said lock slots to secure said cap to said ring with its lower face spaced from the ring flange when the cap is fitted into the ring, and a removable filter bag including reticulated side walls and having an open end defined by a shape-retaining liquid impervious marginal part, said bag open end positioned under said cap bore with said bag marginal part compressively retained between said cap lower face and said ring flange.
Claim 2
Dependent Claim
209 words
A bag clamp assembly for use in a liquid filter, said assembly comprising a ring, said ring being defined by an outer wall and an inner wall, said inner wall including a lower annular flange extending radially inwardly from the inner wall, a cap fittable within said ring, said cap having a substantially solid body and including a lateral circumferential edge, said cap body including inner and outer faces and having a bore therethrough extending from said inner face to said outer face, said bore constituting a liquid inlet, one of said ring outer wall and said cap lateral edge carrying a plurality of pin means extending radially therefrom, the other of said ring outer wall and said cap lateral edge having a plurality of lock slots formed therein, said pin means for co-operating with said lock slots to secure said cap to said ring with its lower face spaced from the ring flange when the cap is fitted into the ring, and a removable filter bag including reticulated side walls and having an open end defined by a shape-retaining liquid impervious marginal part, said bag open end positioned under said cap bore with said bag marginal part compressively retained between said cap lower face and said ring flange.
Claim 3
Dependent Claim
41 words
The clamp assembly of claim 1, wherein said lower face of the cap includes an annular groove therein, said cap groove being located adjacent the lateral edge of said cap, said marginal part of the bag fitted into said cap groove.
Claim 4
Dependent Claim
23 words
The clamp assembly of claim 1 wherein said ring carries a rigid filtering basket, said bag side wall extending supportedly into said basket.
Claim 5
Dependent Claim
75 words
The clamp assembly of claim 1 and a filter housing including a side wall and a bottom wall, a liquid outlet in said housing, said housing having an open upper marginal section, said ring connected to said housing upper marginal section, a rigid filtering basket including an out-turned opening defining lip, said basket lip compressively retained between said bag open end and said ring flange with said bag side wall extending supportedly into said basket.
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) | 1984-08-24 | 1985-02-23 | 1985-08-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-08-24 | 1989-02-23 | 1989-08-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-08-24 | 1993-02-23 | 1993-08-25 | $7700.00 | Window Closed / Lapsed |