Filter cartridge with a connector seal
First Claim
1. A filter cartridge for removing particulates from a destructive fluid, said filter cartridge comprising a cylindrical filter arrangement having a generally annular cross section and including a cylindrical microporous fluoropolymeric filter for removing particulate contaminants from fluid flowing through the filter and further including a cylindrical fluoropolymeric structure coaxially disposed adjacent the filter for supporting the filter, first and second impervious fluoropolymeric end caps concentrically disposed adjacent first and second ends, respectively, of the filter arrangement, said first end cap including a cylindrical protrusion projecting away from the filter arrangement and containing means defining a central aperture communicating with the center of the filter arrangement and said second end cap enclosing said second end of said filter arrangement, and a sealing ring cooperatively arranged with the first end cap, at least the external surface of said sealing ring comprising a fluoropolymeric material.
1 Assignment
0 Petitions
Accused Products
Abstract
The disclosure describes a filter cartridge for removing particulates from a destructive fluid such as a hot acid or solvent. The filter cartridge comprises a cylindrical filter arrangement having a generally annular cross section and including a cylindrical, microporous fluoropolymeric filter for removing the particulate contaminants as the corrosive fluid flows through the filter. The filter arrangement also includes a cylindrical fluoropolymeric structure coaxially disposed adjacent the filter for supporting the filter. The filter cartridge further includes first and second impervious fluoropolymeric end caps concentrically disposed adjacent the first and second ends, respectively, of the filter arrangement. The first end cap includes a central aperture communicating with the center of the filter arrangement.
240 Citations
17 Claims
- 1. A filter cartridge for removing particulates from a destructive fluid, said filter cartridge comprising a cylindrical filter arrangement having a generally annular cross section and including a cylindrical microporous fluoropolymeric filter for removing particulate contaminants from fluid flowing through the filter and further including a cylindrical fluoropolymeric structure coaxially disposed adjacent the filter for supporting the filter, first and second impervious fluoropolymeric end caps concentrically disposed adjacent first and second ends, respectively, of the filter arrangement, said first end cap including a cylindrical protrusion projecting away from the filter arrangement and containing means defining a central aperture communicating with the center of the filter arrangement and said second end cap enclosing said second end of said filter arrangement, and a sealing ring cooperatively arranged with the first end cap, at least the external surface of said sealing ring comprising a fluoropolymeric material.
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14. A filter assembly for removing particulates from a destructive fluid, said filter comprising a series of coaxially aligned, cylindrical filter arrangements including an initial filter arrangement having a first end facing away from the series of filter arrangements and a final filter arrangement having a second end facing away from the series of filter arrangements, each filter arrangement in the series having a generally annular cross section and including a cylindrical, microporous fluoropolymeric filter for removing particulate contaminants from fluid flowing through the filter and further including a cylindrical fluoropolymeric structure coaxially disposed adjacent the filter for supporting the filter;
- a first impervious fluoropolymeric end cap concentrically mounted to the first end of the initial filter arrangement and including a cylindrical protrusion facing away from the initial filter arrangement and containing means defining a central aperture communicating with the center of the initial filter arrangement;
a second impervious end cap concentrically mounted to and enclosing the second end of the final filter arrangement;
means disposed between adjacent filter arrangements for coaxially connecting the filter arrangements, and a sealing ring cooperatively arranged with the first end cap, at least the external surface of said sealing ring comprising a fluoropolymeric material.
- a first impervious fluoropolymeric end cap concentrically mounted to the first end of the initial filter arrangement and including a cylindrical protrusion facing away from the initial filter arrangement and containing means defining a central aperture communicating with the center of the initial filter arrangement;
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15. A filter cartridge for removing particulates from a destructive fluid, said filter cartridge comprising a cylindrically-shaped filter arrangement including a composite means for filtering particulates from the destructive fluid while resisting the deteriorative effects of the destructive fluid, said composite means comprising a microporous PTFE membrane having an absolute pore rating of at least about 0.01 micrometer and upstream and downstream layers fashioned from nonwoven PTFE fibers for supporting the membrane and further including a perforated PTFE core disposed coaxially within the composite means and a perforated PTFE cage disposed coaxially about the composite means for supporting the composite means;
- a first impervious PTFE end cap joined to one end of the cylindrically-shaped filter arrangement and including a cylindrical protrusion facing away from the filter arrangement and containing means defining a central aperture communicating with the center of the filter arrangement;
a second impervious PTFE end cap joined to and enclosing the other end of the cylindrically-shaped filter arrangement; and
a sealing ring operatively associated with the first end cap, at least the external surface of the sealing ring comprising a fluoropolymeric material. - View Dependent Claims (16, 17)
- a first impervious PTFE end cap joined to one end of the cylindrically-shaped filter arrangement and including a cylindrical protrusion facing away from the filter arrangement and containing means defining a central aperture communicating with the center of the filter arrangement;
Specification