Patent EP0257793A1 successfully refreshed from Google Patents.
EP0257793A1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Filter apparatus
Assignee: Industrial Filter and Pump Manufacturing Co
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Filing: 1987-07-22
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Granted: —
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Expires: 2007-07-22
Abstract
Abstract Apparatus for filtering a fluid or gas stream under pressure includes a tank (12) having inlet (18) and outlet (26) ports with a tube sheet (36) disposed therebetween. The tube sheet supports one or more generally elongate filter tubes (38) disposed in tube sheet apertures (40) arranged in spaced relation one to another. Each filter tube has a flange (54) which is sealed to the tube sheet by an annular gasket (46) which expands as its temperature rises. The tube sheet is provided with upstanding circular wall members (56) circumscribing the filter tube apertures. The inside diameter of the wall members is larger than the outside diameter of the filter tube flange forming a recess within which the flange is receivable. A plurality of through holes (59) in the wall members receive pins (60) extending across the filter tube flanges.
Inventors
- 👤 James F. Zievers
- 👤 Paul Eggerstedt
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-07 19:50
CPC Classifications
B; B01; B01D; B01D46/00; B01D46/24; B01D46/2403; B01D46/2407; B01D29/00; B01D29/11; B01D29/114; B01D29/50; B01D29/52; B01D46/0002; B01D46/0005; B01D2201/00; B01D2201/04; B01D2201/043; B01D2201/0446
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
214 words
Filter apparatus comprising a tank having an inlet port and an outlet port; a generally rigid tube sheet disposed within said tank and adapted to sealably partition said tank between said inlet and outlet ports; a tubular filter element formed of a porous material for filtering fluid admitted to said tank, said filter element having a hollow, generally cylindrical body portion, said body portion having a proximal end and a distal end; said distal end being closed; said proximal end having an integrally formed annular, external flange; said tube sheet having a circular aperture for receiving said cylindrical body portion of said filter element and further having an upstanding circular wall member coaxially disposed with respect to said aperture; said wall member having an inside diameter which is larger than the outside diameter of said flange to receive said flange therewithin; annular sealing means disposed between said flange and said tube sheet; said wall member having a plurality of through holes; and pin means extending through said holes across the top of said filter element, said pin means bearing against the proximal end of said filter element, whereby said flange is held by said pin means against said sealing means to form a fluid tight seal between said filter element and said tube sheet.
Claim 2
Dependent Claim
214 words
Filter apparatus comprising a tank having an inlet port and an outlet port; a generally rigid tube sheet disposed within said tank and adapted to sealably partition said tank between said inlet and outlet ports; a tubular filter element formed of a porous material for filtering fluid admitted to said tank, said filter element having a hollow, generally cylindrical body portion, said body portion having a proximal end and a distal end; said distal end being closed; said proximal end having an integrally formed annular, external flange; said tube sheet having a circular aperture for receiving said cylindrical body portion of said filter element and further having an upstanding circular wall member coaxially disposed with respect to said aperture; said wall member having an inside diameter which is larger than the outside diameter of said flange to receive said flange therewithin; annular sealing means disposed between said flange and said tube sheet; said wall member having a plurality of through holes; and pin means extending through said holes across the top of said filter element, said pin means bearing against the proximal end of said filter element, whereby said flange is held by said pin means against said sealing means to form a fluid tight seal between said filter element and said tube sheet.
Claim 3
Dependent Claim
31 words
Apparatus according to claim 1 wherein said pin means comprises a plurality of pins extending across the proximal end of said filter element to compress said flange against said sealing means.
Claim 4
Dependent Claim
17 words
Apparatus according to claim 1 or 2 wherein said sealing means expands during operation of said apparatus.
Claim 5
Dependent Claim
21 words
Apparatus according to any preceding claim wherein said plurality of through holes comprises at least two pairs of axially aligned holes.
Claim 6
Dependent Claim
30 words
Apparatus according to claim 4 wherein the respective axes of said two pairs of holes do not overlie the inside diameter of said cylindrical body portion of said filter element.
Claim 7
Dependent Claim
25 words
Apparatus according to any preceding claim wherein said sealing means comprises a unitary piece of material having a thickness which increases with the temperature thereof.
Claim 8
Dependent Claim
28 words
Apparatus according to claim 6 wherein said pin means is spaced from said proximal end of said filter element when said gasket material is at about room temperature.
References Cited (Backward Citations)
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