US3814261A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Filter for liquid material
Assignee: Pall Filter Specialists Inc
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Filing: 1973-01-22
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Granted: 1974-06-04
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Expires: 1993-01-22
Abstract
Abstract A filter which includes a housing having a liquid inlet and a liquid outlet formed therein. A reticulated basket is fitted and supported within the housing in a spaced relationship from the housing side wall. A filter bag is fitted within the reticulated basket and is supported by the basket in sealing engagement with a cap applied over the housing. The cap includes an upwardly offset marginal portion which in cooperation with the inlet into the filter housing defines a passageway by which liquid can enter the housing and pass upwardly and over the upper marginal edge of the filter bag, down into the bag, through the bag, and out the liquid outlet.
Inventors
- 👤 H Morgan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 11:22
CPC Classifications
B; B01; B01D; B01D29/00; B01D29/11; B01D29/13; B01D29/23; B01D29/27; B01D29/88; B01D29/90; B01D2201/00; B01D2201/30; B01D2201/301
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
211 words
A filter comprising a housing including side and bottom walls and having an open top defined by the upper edge of said side wall, said housing having two port means formed therein, one of said port means serving as a liquid inlet and the other of said port means serving as a liquid outlet, said one port means located in said side wall adjacent its said upper edge, a reticulated basket is fitted within said housing, means supporting said basket in a spaced relationship from portions of said side wall, a filter bag having an open top defined by the upper edge of said bag, said bag fitted within said basket and being supported therein at its upper edge by said support means adjacent the upper edge of said housing side wall, a cap spanning the top of said housing in peripheral sealing engagement with the upper edge of said housing side wall, said cap including an upwardly offset portion located over said one port means, the upper edge of said bag in peripheral engagement with said cap except at the offset portion thereof, said offset portion defining a liquid passage means from said one port means over the upper edge of said bag and into the interior of said bag.
Claim 2
Dependent Claim
211 words
A filter comprising a housing including side and bottom walls and having an open top defined by the upper edge of said side wall, said housing having two port means formed therein, one of said port means serving as a liquid inlet and the other of said port means serving as a liquid outlet, said one port means located in said side wall adjacent its said upper edge, a reticulated basket is fitted within said housing, means supporting said basket in a spaced relationship from portions of said side wall, a filter bag having an open top defined by the upper edge of said bag, said bag fitted within said basket and being supported therein at its upper edge by said support means adjacent the upper edge of said housing side wall, a cap spanning the top of said housing in peripheral sealing engagement with the upper edge of said housing side wall, said cap including an upwardly offset portion located over said one port means, the upper edge of said bag in peripheral engagement with said cap except at the offset portion thereof, said offset portion defining a liquid passage means from said one port means over the upper edge of said bag and into the interior of said bag.
Claim 3
Dependent Claim
48 words
The filter of claim 1 wherein said support means includes a peripheral shoulder carried by said side wall and located adjacent the level of the upper edge of said side wall, the upper edge of said bag overlying said shoulder and being compressed between said cap and shoulder.
Claim 4
Dependent Claim
30 words
The filter of claim 2 and a rigid ring bound in the upper edge of said bag, said ring seated upon said shoulder and compressed between said cap and shoulder.
Claim 5
Dependent Claim
39 words
The filter of claim 2 wherein said basket includes an upper edge formed into an outturned peripheral flange, said flange seated upon said shoulder, said bag upper edge overlying said flange being compressed against said flange by said cap.
Claim 6
Dependent Claim
81 words
The filter of claim 1 wherein said support means includes an offset side wall part extending from the lower edge of said one port means internally of the housing to adjacent the upper edge of said housing side wall and under said offset cap portion and there terminating in a shoulder means for supporting said basket, said offset side wall part cooperating with said offset cap portion to define said liquid passage means from said one port means into said bag.
Claim 7
Dependent Claim
180 words
The filter of claim 1 wherein said support means constitutes a carrier of ring-like configuration removably seated within said housing and having a side wall with upper and lower edges, the plane of said upper carrier edge generally paralleling said side wall upper edge, the plane Of said lower carrier edge being inclined relative to the plane of the upper carrier edge, said lower carrier edge in peripheral sealing engagement with said housing side wall and extending from below said one port means to above said other port means with said upper carrier edge located adjacent said upper housing edge, said carrier supporting said basket and including a peripheral shoulder located adjacent the level of the upper edge of said housing, the upper edge of said bag overlying said shoulder and being compressed between said cap and shoulder, said carrier side wall having a portion oppositely located and inwardly spaced from said one port means, said carrier side wall portion cooperating with said offset cap portion to define said liquid passage means from said one port means into said bag.
Claim 8
Dependent Claim
51 words
The filter of claim 6 wherein said housing side wall includes an inwardly projecting flange extending about the inner surface of said side wall in an inclined plane from below said one port means to above said other port means, said lower carrier edge seated over and supported by said flange.
Claim 9
Dependent Claim
29 words
The filter of claim 6 wherein said other port means is located in said housing side wall at the opposite side of said housing from said one port means.
Claim 10
Dependent Claim
19 words
The filter of claim 8 wherein said port means are oppositely positioned adjacent the upper edge of said housing.
Claim 11
Dependent Claim
38 words
The filter of claim 1 wherein said bag is formed of a plurality of porous layers, each layer having a different porosity with the innermost layer having the greater porosity and the outermost layer having the least porosity.
Claim 12
Dependent Claim
206 words
A filter comprising a housing including side and bottom walls and having an open top defined by the upper edge of said side wall, said housing having two port means formed therein, one of said port means serving as a liquid inlet and the other of said port means serving as a liquid outlet, said one port means located in said side wall adjacent its said upper edge, a reticulated basket is fitted within said housing, means supporting said basket in a spaced relationship from portions of said side wall, a filter bag having an open top defined by the upper edge of said bag, said bag fitted within said basket and being supported therein at its upper edge by said support means adjacent the upper edge of said housing side wall, a cap spanning the top of said housing in peripheral sealing engagement with the upper edge of said housing side wall, said cap including an upwardly offset portion located over said one port means, means sealing the upper edge of said bag peripherally about said support means, said offset portion defining a liquid passage means from said one port means over the upper edge of said bag and into the interior of said bag.
Claim 13
Dependent Claim
206 words
A filter comprising a housing including side and bottom walls and having an open top defined by the upper edge of said side wall, said housing having two port means formed therein, one of said port means serving as a liquid inlet and the other of said port means serving as a liquid outlet, said one port means located in said side wall adjacent its said upper edge, a reticulated basket is fitted within said housing, means supporting said basket in a spaced relationship from portions of said side wall, a filter bag having an open top defined by the upper edge of said bag, said bag fitted within said basket and being supported therein at its upper edge by said support means adjacent the upper edge of said housing side wall, a cap spanning the top of said housing in peripheral sealing engagement with the upper edge of said housing side wall, said cap including an upwardly offset portion located over said one port means, means sealing the upper edge of said bag peripherally about said support means, said offset portion defining a liquid passage means from said one port means over the upper edge of said bag and into the interior of said bag.
Claim 14
Dependent Claim
82 words
The filter bag of claim 11 wherein said support means includes an offset side wall part extending from the lower edge of said one port means internally of the housing to adjacent the upper edge of said housing side wall and under said offset cap portion and there terminating in a shoulder means for supporting said basket, said offset side wall part cooperating with said offset cap portion to define said liquid passage means from said one port means into said bag.
Claim 15
Dependent Claim
180 words
The filter of claim 11 wherein said support means constitutes a carrier of ring-like configuration removably seated within said housing and having a side wall with upper and lower edges, the plane of said upper carrier edge generally paralleling said side wall upper edge, the plane of said lower carrier edge being inclined relative to the plane of the upper carrier edge, said lower carrier edge in peripheral sealing engagement with said housing side wall and extending from below said one port means to above said other port means with said upper carrier edge located adjacent said upper housing edge, said carrier supporting said basket and including a peripheral shoulder located adjacent the level of the upper edge of said housing, the upper edge of said bag overlying said shOulder and being compressed between said cap and shoulder, said carrier side wall having a portion oppositely located and inwardly spaced from said one port means, said carrier side wall portion cooperating with said offset cap portion to define said liquid passage means from said one port means into said bag.
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) | 1977-06-03 | 1977-12-03 | 1978-06-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-03 | 1981-12-03 | 1982-06-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-03 | 1985-12-03 | 1986-06-04 | $7700.00 | Window Closed / Lapsed |