US3770127A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cartridge-type filter element and housing therefor
Assignee: KORHUMEL Inc A CORP OF
•
Filing: 1971-11-04
•
Granted: 1973-11-06
•
Expires: 1991-11-04
Abstract
Abstract A cartridge-type filter element in which the filter structure is of envelope-type construction with spacing means therein, the filter structure having a greater planar dimension in one direction than the corresponding dimension of a container in which it is disposed, and having a corrugated or serpentine configuration in transverse cross section along said greater dimension to permit such disposition, such container having therein a quantity of filter material in the form of discrete particles, present in an amount to provide an effective filter layer on such filter structure with the latter forming a supporting structure for such filter layer, novel housing means also being provided for one embodiment of such filter element.
Inventors
- 👤 E White
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 21:20
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/001; C02F1/003; C02F2201/00; C02F2201/002; C02F2201/006
Claims Analysis
Total Claims: 29
Claim 1
Independent Claim
275 words
A cartridge-type filter element comprising a container constructed to form a filtering chamber, a quantity of filter material comprising discrete particles, a filter supporting structure for said filter material, comprising a pair of opposed flexible sidewalls formed from sheet material, said sidewalls being liquid-permeable but impereable to the particles of said filter material, which sidewalls are longer in one coordinate direction than the other coordinate direction, one of said sidewalls having an opening therein forming the filtrate outlet for the filter supporting structure, means having substantially uniform overall thickness disposed in said filter supporting structure constructed to maintain said sidewalls in substantially uniform, closely spaced relation while permitting filtrate to flow from the inner surfaces of said sidewalls to said outlet, said filter supporting structure being disposed in said chamber with said sidewalls being formed to provide a transverse cross section of corrugated configuration along said greater dimension, whereby the effective size of said filter structure in such direction is such that it permits such disposition, said container having a filtrate outlet in a wall thereof, and a liquid inlet opening in a wall thereof, communicating with said filtering chamber, and means secured to said container and said filter supporting structure operatively connecting the filtrate outlets of said container and said filter supporting structure, said filter material being dispoSed in said container and present in a quantity sufficient to provide an effective filter layer thereof on the exterior surface of said sidewalls of the filter supporting structure, the sidewalls of the latter forming supporting means for said filter layer with the latter being operative to filter out material that would otherwise pass through said sidewalls.
Claim 2
Dependent Claim
275 words
A cartridge-type filter element comprising a container constructed to form a filtering chamber, a quantity of filter material comprising discrete particles, a filter supporting structure for said filter material, comprising a pair of opposed flexible sidewalls formed from sheet material, said sidewalls being liquid-permeable but impereable to the particles of said filter material, which sidewalls are longer in one coordinate direction than the other coordinate direction, one of said sidewalls having an opening therein forming the filtrate outlet for the filter supporting structure, means having substantially uniform overall thickness disposed in said filter supporting structure constructed to maintain said sidewalls in substantially uniform, closely spaced relation while permitting filtrate to flow from the inner surfaces of said sidewalls to said outlet, said filter supporting structure being disposed in said chamber with said sidewalls being formed to provide a transverse cross section of corrugated configuration along said greater dimension, whereby the effective size of said filter structure in such direction is such that it permits such disposition, said container having a filtrate outlet in a wall thereof, and a liquid inlet opening in a wall thereof, communicating with said filtering chamber, and means secured to said container and said filter supporting structure operatively connecting the filtrate outlets of said container and said filter supporting structure, said filter material being dispoSed in said container and present in a quantity sufficient to provide an effective filter layer thereof on the exterior surface of said sidewalls of the filter supporting structure, the sidewalls of the latter forming supporting means for said filter layer with the latter being operative to filter out material that would otherwise pass through said sidewalls.
Claim 3
Dependent Claim
33 words
A filter element according to claim 1, wherein said filter supporting structure is of envelope-type construction with said sidewalls being coextensive in corresponding directions and secured to each other along their peripheral edges.
Claim 4
Dependent Claim
29 words
A filter element according to claim 2, wherein said spacing means comprises a mesh structure constructed to permit liquid flow both transversely through and longitudinally along such mesh structure.
Claim 5
Dependent Claim
42 words
A filter element according to claim 3, wherein said mesh structure is in the form of a screen of connected sets of filaments, the filaments of each set extending parallel to each other and transverse to the filaments of the other set.
Claim 6
Dependent Claim
20 words
A filter element according to claim 4, wherein said mesh structure is a polypropylene plastic netting with a diamond pattern.
Claim 7
Dependent Claim
37 words
A filter element according to claim 2, wherein said container is of elongated tubular configuration, closed at its opposite ends, said filter supporting structure having the corrugated configuration thereof extending transverse to the axis of said container.
Claim 8
Dependent Claim
33 words
A filter element according to claim 2, wherein said container is of elongated tubular configuration, closed at its opposite ends, said filter supporting structure having the corrugated configuration thereof extending in axial direction.
Claim 9
Dependent Claim
22 words
A filter element according to claim 3, wherein said mesh structure is in the form of a screen of expanded sheet metal.
Claim 10
Dependent Claim
20 words
A filter element according to claim 3, wherein said filter structure is constructed from a nonwoven porous cellulosic filter fabric.
Claim 11
Dependent Claim
31 words
A filter element according to claim 3, wherein said filter structure comprises a sheet of nonwoven porous material folded back on a median line with opposing edges sealed to one another.
Claim 12
Dependent Claim
140 words
A filter element according to claim 1, particularly for water filtration in connection with the production of a potable water supply, wherein said container is provided with a second chamber adjacent said first chamber, said filtrate outlet connecting means comprising a fitting extending into said second chamber, means disposed in said second chamber forming a receptacle with said fitting extending into said receptacle and operative to connect the interior of said filter structure with the interior of said receptacle for the passage of filtrate into the latter, said receptacle having outlet openings in a wall thereof for the passage of filtrate into said second chamber, an exterior wall of said container defining a part of said second chamber therein, and filter material disposed in said receptacle operatively interposed between the discharge openings therein and the adjacent opening of said fitting.
Claim 13
Dependent Claim
60 words
A filter element according to claim 11, wherein said container is of generally elongated tubular construction, having said second chamber disposed at one end of the container and separated from said first chamber by a partition wall, said fitting extending axially through said partition wall, said receptacle comprising a base member mounted on said fitting and a cooperable cover member.
Claim 14
Dependent Claim
41 words
A filter element according to claim 12, wherein said liquid inlet and filtrate outlet openings of the element are at opposite ends of said container, and a check valve disposed in said inlet opening arranged to prevent liquid flow externally therethrough.
Claim 15
Dependent Claim
48 words
A filter element according to claim 12, wherein said receptacle is mounted on said inlet fitting in spaced relation to the walls of said second chamber with the mounting wall of said receptacle being provided with said outlet openings for the discharge of liquid into said second chamber.
Claim 16
Dependent Claim
35 words
A filter element accordinG to claim 11, wherein the filter means in said receptacle comprises particles of activated carbon and a filter pad interposed between said activated carbon particles and the openings in said receptacle.
Claim 17
Dependent Claim
35 words
A filter element according to claim 15, wherein said filter pad is constructed to provide greater porosity therethrough adjacent the inlet face thereof than adjacent the outlet face thereof whereby an in-depth filtering is effected.
Claim 18
Dependent Claim
16 words
A filter element according to claim 16, wherein said filter pad is constructed from cellulosic fibers.
Claim 19
Dependent Claim
156 words
A filter element according to claim 1, wherein said container is of elongated tubular construction, said filter supporting structure being constructed from an elongated sheet of porous material folded along its longitudinal median line with opposing edges secured in sealed relation, forming an elongated envelope structure, said spacing means comprising a screen of expanded sheet metal, the length of said elongated sheet being greater than the corresponding dimension of the container, said envelope being folded in alternate directions at spaced intervals along its length to form a corrugated or serpentine configuration, the overall length of which may be contained in said container, one end of the latter having said liquid inlet opening therein, the opposite end having said connecting means secured thereto and forming the filtrate outlet for said container, the filtrate outlet opening of said filter supporting structure being disposed adjacent the end thereof at said opposite container end and connected to said connecting means.
Claim 20
Dependent Claim
222 words
A replaceable cartridge-type filter assembly comprising a cartridge-receiving housing of tubular configuration having a pair of oppositely disposed end walls connected by tubular sidewalls, one of said end walls being constructed for detachment therefrom to provide access to the housing interior, the other end wall having an inwardly directed conical boss, provided with a centrally disposed liquid inlet passageway therein, the tubular wall having a filtrate outlet opening therein, a cover member having an inwardly extending boss therein provided with a centrally disposed bore therein and a plurality of radially extending bores therein forming connecting passageways between said bore and said filtrate outlet, and a filter cartridge disposed in said housing supported by said bosses, and a filter cartridge disposed in said housing comprising an elongated tubular-shaped container having a liquid inlet opening at one end and a filtrate outlet opening at the other end, means on said container at the inlet end thereof for detachable sealing engagement with said conical boss to provide communication between said inlet openings of the housing and container, and means at the other end of said container for detachable sealing engagement with the adjacent boss thereat to provide communication between said container filtrate outlet and said central bore, and a filter structure disposed in said container operatively interposed between the liquid inlet and filtrate outlet thereof.
Claim 21
Dependent Claim
222 words
A replaceable cartridge-type filter assembly comprising a cartridge-receiving housing of tubular configuration having a pair of oppositely disposed end walls connected by tubular sidewalls, one of said end walls being constructed for detachment therefrom to provide access to the housing interior, the other end wall having an inwardly directed conical boss, provided with a centrally disposed liquid inlet passageway therein, the tubular wall having a filtrate outlet opening therein, a cover member having an inwardly extending boss therein provided with a centrally disposed bore therein and a plurality of radially extending bores therein forming connecting passageways between said bore and said filtrate outlet, and a filter cartridge disposed in said housing supported by said bosses, and a filter cartridge disposed in said housing comprising an elongated tubular-shaped container having a liquid inlet opening at one end and a filtrate outlet opening at the other end, means on said container at the inlet end thereof for detachable sealing engagement with said conical boss to provide communication between said inlet openings of the housing and container, and means at the other end of said container for detachable sealing engagement with the adjacent boss thereat to provide communication between said container filtrate outlet and said central bore, and a filter structure disposed in said container operatively interposed between the liquid inlet and filtrate outlet thereof.
Claim 22
Dependent Claim
86 words
A replaceable cartridge-type filter assembly according to claim 19, in which said filter cartridge container is provided with a fitting extending through the adjacent end wall of said filter container and provided with a conical outer surface disposed in said central bore and engaged in sealing engagement with the sidewall thereof, said fitting extending into said container and secured to said filter structure at said filtrate opening therein, providing supporting means for said filter structure and operatively connecting the interior of the latter with said bore.
Claim 23
Dependent Claim
78 words
A replaceable cartridge-type filter assembly according to claim 20, wherien the end wall of said cartridge container having the liquid inlet opening therein has a central inlet portion connected to the tubular sidewalls by an outwardly diverging conical portion, a sealing ring disposed on said conical portion engageable in sealing engagement with the conical Face of said conical boss to provide communication between the liquid inlet opening in the latter and the liquid inlet opening in the container.
Claim 24
Dependent Claim
234 words
A cartridge-type filter assembly according to claim 19, wherien said filter cartridge is constructed to form a filtering chamber in which said filter structure is disposed, the latter comprising a pair of opposed flexible, liquid-permeable sidewalls formed from sheet material, which sidewalls are longer in one coordinate direction than in the other coordinate direction, one of said sidewalls having an opening therein forming the filtrate outlet for the filter structure, means disposed in said filter structure constructed to maintain said sidewalls in spaced relation while permitting filtrate to flow from the inner surfaces of said sidewalls to said outlet, said filter structure being disposed in said chamber with said sidewalls being formed to provide a transverse cross section of corrugated configuration along said greater dimension, whereby the effective size of said filter structure in such direction is such that it permits such disposition, said container having a filtrate outlet in a wall thereof, and a liquid inlet opening in a wall thereof communicating with said filter chamber, a fitting secured to said container and said filter structure, operatively connecting the filtrate outlets of said container and said filter structure, and a quantity of filter material comprising discrete particles disposed in said container and present in a quantity sufficient to provide an effective filter layer on the exterior surface of said sidewalls of the filter structure, the latter forming supporting means for said filter layer.
Claim 25
Dependent Claim
35 words
A filter replaceable cartridge-type filter assembly according to claim 22, wherein said filter structure is of envelope-type construction with said sidewalls being coextensive in corresponding directions and secured to each other along their peripheral edges.
Claim 26
Dependent Claim
32 words
A filter replaceable cartridge-type filter assembly according to claim 23 wherein said spacing means comprises a mesh structure constructed to permit liquid flow both transversely through and longitudinally along such mesh structure.
Claim 27
Dependent Claim
144 words
A replaceable cartridge-type filter assembly according to claim 22, wherein said container is of elongated tubular construction, said filter structure being constructed from an elongated sheet of porous material folded along its longitudinal median line with opposing edges secured in sealed relation, forming an elongated filter structure, said spacing means comprising a screen of expandable sheet material, the length of said elongated sheet being greater than the length of the container, said envelope being folded in alternate directions at spaced intervals along its length to form a corrugated or serpentine configuration, the overall length of which may be contained in said container, one end wall of the latter having said liquid inlet opening therein, the opposite end having said fitting secured thereto and forming the filtrate outlet for said container, the filtrate outlet opening of said filter structure being disposed adjacent one end thereof.
Claim 28
Dependent Claim
84 words
A replacement cartridge-type filter assembly according to claim 19, wherein said filter cartridge is provided with a fitting extending through the adjacent end wall of said filter container and provided with a conical outer surface disposed in said central bore and engaged in sealing engagement with the sidewall thereof, said fitting extending into said container and secured to said filter structure at said filtrate opening therein, providing supporting means for said filter structure and operatively connecting the interior of the latter with said bore.
Claim 29
Dependent Claim
72 words
A replacement cartridge-type filter assembly according to claim 19, wherein the end wall of said cartridge having the liquid inlet opening therein has a central inlet portion connected to the tubular sidewalls by an outwardly diverging conical portion, a sealing ring disposed on said conical portion engagEable in sealing engagement with said boss to provide communication between the liquid inlet opening in the latter and the liquid inlet opening in the cartridge.
References Cited (Backward Citations)
US1304918A
Cited
US1950487A
Cited
US2143044A
Cited
US3358843A
Cited
US3540587A
Cited
US3282434A
Cited
US3595397A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-11-05 | 1977-05-07 | 1977-11-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-11-05 | 1981-05-07 | 1981-11-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-11-05 | 1985-05-07 | 1985-11-06 | $7700.00 | Window Closed / Lapsed |