Patents Assigned to Filtercorp Partners L.P.
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Patent number: 5458772Abstract: A filter holder assembly for use with an oil filtering pan in a food fryer filtration system to filter a contaminated cooking oil is provided with an adjustable sealing ring so as to accommodate filters of different thicknesses such as filter pads and filter paper. In one self-adjusting embodiment, the sealing ring is configured for vertical movement by way of a pair of pins operatively connected to the sealing ring and that are movable vertically within a corresponding pair of slotted hinge members. When a filter pad is used with this embodiment, the pins are urged against the hinge members such that pressure is applied to the sealing ring to form a positive seal. Alternative embodiments create a positive seal when either a filter pad or filter paper is used.Type: GrantFiled: January 13, 1994Date of Patent: October 17, 1995Assignee: Filtercorp Partners L.P.Inventors: Don H. Eskes, Richard A. Bernard, Sidney A. Burklund
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Patent number: 5449469Abstract: Filtering systems used to filter contaminated fluid. The filtering system (10) includes a supply pump (12); a filter tank (14) having a plurality of removable filter cassettes (16) disposed therein, each filter cassette housing in proper orientation a filter pad (164); a suction pump (18); a level control mechanism (148) maintaining a substantially uniform level of contaminated fluid within the filter tank; and a control panel (20) housing other process control components. Operation of the filtering system includes a backflush cycle and a relaxation cycle to extend the loading life of the filter pads. Also included is a preventive measure designed to eliminate fluid shear that may result as the filter pads approach the end of their loading life. The double-density filtering system (300) employs double-density filter cassettes (304), each cassette housing a pair of filter pads (164). This allows the volume of the filter tank (302) to be reduced, thereby reducing turnover.Type: GrantFiled: June 29, 1994Date of Patent: September 12, 1995Assignee: Filtercorp Partners L.P.Inventors: Sidney A. Burklund, Terry D. Olson
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Patent number: 5439601Abstract: A filtering system used to filter contaminated fluid. The filtering system (10) includes a supply pump (12); a filter tank (14) having a plurality of removable filter cassettes (16) disposed therein, each filter cassette housing in proper orientation a filter pad (164); a suction pump (18); a level control mechanism (148) maintaining a substantially uniform level of contaminated fluid within the filter tank; and a control panel (20) housing other process control components. Operation of the filtering system includes a backflush cycle and a relaxation cycle to extend the loading life of the filter pads. Also included is a preventive measure designed to eliminate fluid shear that may result as the filter pads approach the end of their loading life.Type: GrantFiled: November 18, 1993Date of Patent: August 8, 1995Assignee: Filtercorp Partners L.P.Inventors: Sidney A. Burklund, Terry D. Olson
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Patent number: 5354455Abstract: Filtering systems used to filter contaminated fluid. The filtering system (10) includes a supply pump (12); a filter tank (14) having a plurality of removable filter cassettes (16) disposed therein, each filter cassette housing in proper orientation a filter pad (164); a suction pump (18); a level control mechanism (148) maintaining a substantially uniform level of contaminated fluid within the filter tank; and a control panel (20) housing other process control components. Operation of the filtering system includes a backflush cycle and a relaxation cycle to extend the loading life of the filter pads. Also included is a preventive measure designed to eliminate fluid shear that may result as the filter pads approach the end of their loading life. The double-density filtering system (300) employs double-density filter cassettes(304), each cassette housing a pair of filter pads (164). This allows the volume of the filter tank (302) to be reduced, thereby reducing turnover.Type: GrantFiled: August 13, 1992Date of Patent: October 11, 1994Assignee: Filtercorp Partners L.P.Inventors: Sidney A. Burklund, Terry D. Olson
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Patent number: 5330638Abstract: A filtering system used to filter contaminated fluid. The filtering system (10) includes a supply pump (12); a filter tank (14) having a plurality of removable filter cassettes (16) disposed therein, each filter cassette housing in proper orientation a filter pad (164); a suction pump (18); a level control mechanism (148) maintaining a substantially uniform level of contaminated fluid within the filter tank; and a control panel (20) housing other process control components. Operation of the filtering system includes a backflush cycle and a relaxation cycle to extend the loading life of the filter pads. Also included is a preventive measure designed to eliminate fluid shear that may result as the filter pads approach the end of their loading life.Type: GrantFiled: January 29, 1992Date of Patent: July 19, 1994Assignee: Filtercorp Partners L.P.Inventors: Sidney A. Burklund, Terry D. Olson