Patents by Inventor John R. Hacker
John R. Hacker has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 7556155Abstract: A fluid filter arrangement has a housing, a filter cartridge oriented within the housing, and a projection arrangement. The projection arrangement is oriented to space the filter cartridge from a wall of the housing in order to provide a fluid flow path between the filter cartridge and the housing wall. In some arrangements, the projection arrangement is part of an end cap. Embodiments of the projections include axial extensions, radial extensions, and angled extensions including both radial and axial components. Systems of use, methods of filtering, methods of making, and methods of servicing include arrangements of these types.Type: GrantFiled: October 7, 2003Date of Patent: July 7, 2009Assignee: Donaldson Company, Inc.Inventors: David B. Harder, Philip Edward Johnson, Eivind Stenersen, Curt A. Rausch, John R. Hacker
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Publication number: 20090127198Abstract: An endcap including a first plate member including a radial inner portion, a radial outer portion, and defining a longitudinal axis. The endcap also includes a flange disposed between the radial inner and outer portions of the first plate member and projecting axially along the longitudinal axis in a first direction. The endcap also includes a first seal member disposed adjacent the flange. The first seal includes a first portion thereof engaged with an axial facing surface of the first plate member and a second portion thereof engaged with a radially facing surface of the flange. The endcap further includes a second plate member disposed radially outward of the radial outer portion and a second seal member disposed adjacent the second plate member including at least a portion thereof axially spaced from the axially facing surface of the first plate member in a second direction along the longitudinal axis opposite the first direction.Type: ApplicationFiled: November 19, 2007Publication date: May 21, 2009Inventors: Christopher J. Salvador, Randall W. Heibenthal, Dennis M. Deedrich, David B. Harder, John R. Hacker, Richard Eisenmenger
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Publication number: 20090114585Abstract: Liquid filter arrangements are described and shown. The arrangements generally include a filter head, a seal adaptor, and a filter member comprising a shell enclosing a cartridge. Unique features for interface between the filter cartridge and the filter head are provided. Also provided are unique filter head features and cartridge features.Type: ApplicationFiled: December 16, 2008Publication date: May 7, 2009Applicant: Donaldson Company Inc.Inventors: Brian Mandt, Brent A. Gulsvig, John R. Hacker
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Publication number: 20080308486Abstract: A filter element includes filter media, first and second end caps, a latch arrangement projecting from the first end cap, a tubular neck extending from the first end cap and a valve head oriented within the first end cap aperture constructed and arranged to move between a position sealing the first end cap aperture and exposing the first end cap aperture. A filter assembly includes a filter element, as characterized herein, and including a filter base and a service cover. A method of servicing includes removing an old filter element, operably mounting a new filter element in a filter base including engaging a valve head against a spring member in the filter base, and operably mounting the service cover over the new filter element and filter base.Type: ApplicationFiled: June 12, 2008Publication date: December 18, 2008Inventor: John R. Hacker
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Publication number: 20080179235Abstract: A filter cartridge is provided including a media pack, a valve arrangement, and first and second seal members. The seal members have different release forces associated with them. In one implementation, the different release forces are provided by having differing outermost dimensions (diameter, if circular). One of the seal members can be larger than the other seal member. In some arrangements, the relationship between the outermost dimension of the first seal member is 1.5 times the size of the outermost dimension of the second seal member. In another aspect, the disclosure provides a filter assembly including a filter bowl and a removable and replaceable filter cartridge operably mounted in the bowl. The filter cartridge includes a media pack, a valve arrangement, and a seal member forming a seal between the filter bowl and the filter cartridge. The seal blocks fluid flow from the interior of the filter bowl through a drain port defined by the filter bowl.Type: ApplicationFiled: October 31, 2005Publication date: July 31, 2008Inventors: John R. Hacker, Gus E. Brieland, Randall William Heibenthal, Dennis Michael Deedrich, David P. Welzant, Thomas A. Boeckermann
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Publication number: 20080142426Abstract: A liquid filter arrangement is provided, as well as methods of assembly and use. The liquid filter arrangement includes an anti-drain back valve assembly therein. Advantageous features, relating to a preferred filter cartridge and preferred anti-drain back valve arrangement, are provided.Type: ApplicationFiled: June 16, 2005Publication date: June 19, 2008Applicant: Donaldson Company, Inc.Inventors: Enrico Greco, Fabrizio Buratto, Mauro Cantoni, Christian Guernieri, John F. Connelly, John R. Hacker
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Patent number: 7314555Abstract: A filter assembly including a replaceable filter cartridge for use with a reusable filter canister. The filter cartridge includes a cylindrical filter media having top and bottom ends respectively mounted within top and bottom end caps. The bottom end cap includes a sidewall that surrounds at least a lower portion of the filter media. A contaminant containment chamber is defined between the sidewall and an outer side of the filter media. When the cartridge is mounted within the canister, the radial sealing element engages an inner surface of the canister to provide a circumferential seal. The sidewall also includes a living hinge positioned below the sealing element.Type: GrantFiled: April 2, 2002Date of Patent: January 1, 2008Assignee: Donaldson Company, Inc.Inventors: Stan M. Koehler, Brent A. Gulsvig, John R. Hacker
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Patent number: 7238285Abstract: A liquid filter arrangement including an internally received treatment agent storage and release cartridge is provided. The assembly is configured for diffusion of the treatment agent from the treatment agent storage and release cartridge, into liquid flowing through the filter arrangement. A particular arrangement shown is configured which provides for a dynamic type of liquid flow providing a current directed through the treatment agent storage and release cartridge. In the preferred arrangements, an initial static type of flow followed by later dynamic flow, is provided. Alternatives, methods of assembly and descriptions of use are provided.Type: GrantFiled: March 4, 2005Date of Patent: July 3, 2007Assignee: Donaldson Company, Inc.Inventors: John R. Hacker, Brian Mandt, Brent A. Gulsvig
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Patent number: 7225680Abstract: An apparatus for measuring the differential pressure of fluid in filter. The apparatus comprises a housing defining a pressure chamber. A differential pressure gauge divides the pressure chamber into first and second fluid chambers. The differential pressure gauge is arranged to measure a differential pressure between fluid in the first chamber and fluid in the second chamber. The differential pressure gauge has a variable output.Type: GrantFiled: December 13, 2004Date of Patent: June 5, 2007Assignee: Donaldson Company, Inc.Inventors: Michael Jon Gustafson, John R. Hacker, John F. Connelly, Gus E. Breiland
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Patent number: 7160451Abstract: A liquid filter arrangement including an internally received treatment agent storage and release cartridge is provided. The assembly is configured for diffusion of the treatment agent from the treatment agent storage and release cartridge, into liquid flowing through the filter arrangement. A particular arrangement shown is configured which provides for a dynamic type of liquid flow providing a current directed through the treatment agent storage and release cartridge. In the preferred arrangements, an initial static type of flow followed by later dynamic flow, is provided. Alternatives, methods of assembly and descriptions of use are provided.Type: GrantFiled: December 9, 2005Date of Patent: January 9, 2007Assignee: Donaldson Company, Inc.Inventors: John R. Hacker, Brian Mandt, Brent A. Gulsvig
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Publication number: 20040079693Abstract: A liquid filter assembly includes a filter head having an interchangeable spin-on canister filter and a bowl-cartridge filter. Methods of using the liquid filter assembly include providing a filter head capable of operably receiving both a spin-on canister filter and a bowl-cartridge filter. The method also includes operably installing one of the spin-on canister filter and the bowl-cartridge filter onto the filter head to provide a filter assembly. After a period of use, the spin-on canister filter or bowl-cartridge filter is removed and replaced. The replacement can include, interchangeably, a spin-on canister filter and a bowl-cartridge filter. Constructions for accommodating an interchangeable system include preferred arrangements of mechanical connection structure.Type: ApplicationFiled: October 21, 2003Publication date: April 29, 2004Applicant: Donaldson Company, Inc.Inventors: John R. Hacker, David B. Harder, Jess T. Nordby, Michael J. Gustafson, Alan D. Klein
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Publication number: 20020139735Abstract: Liquid filter constructions include a baffle plate secured to a can, by way of laser welding. A filter element is operably oriented within the interior of the can. The filter element includes a first end cap and a media pack secured to the first end cap. In some embodiments, the first end cap radially abuts an outer, annular surface of a tubular member of the baffle plate to form a radially directed seal between the first end cap and the tubular member. Liquid filter constructions of this type have a burst strength between 500-800 psi (about 3.4-5.5 MPa), along a longitudinal section of the can wall. Constructions of this type eliminate a roll or lock seam, an inner gasket, an inner compressive spring, and a gasket retainer. Systems for using liquid filters are described herein. Methods of constructing and using these types of filter arrangements are also described.Type: ApplicationFiled: February 25, 2002Publication date: October 3, 2002Applicant: Donaldson Company, Inc.Inventors: Eivind Stenersen, David B. Harder, John R. Hacker, Gerald D. Kiral, Ronald W. Streitmatter, Kevin K. Socha
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Publication number: 20020125188Abstract: A liquid filter assembly includes a filter head having an interchangeable spin-on canister filter and a bowl-cartridge filter. Methods of using the liquid filter assembly include providing a filter head capable of operably receiving both a spin-on canister filter and a bowl-cartridge filter. The method also includes operably installing one of the spin-on canister filter and the bowl-cartridge filter onto the filter head to provide a filter assembly. After a period of use, the spin-on canister filter or bowl-cartridge filter is removed and replaced. The replacement can include, interchangeably, a spin-on canister filter and a bowl-cartridge filter. Constructions for accommodating an interchangeable system include preferred arrangements of mechanical connection structure.Type: ApplicationFiled: March 6, 2001Publication date: September 12, 2002Inventors: John R. Hacker, David B. Harder, Jess T. Nordby, Michael J. Gustafson, Alan D. Klein
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Patent number: 6384369Abstract: Liquid filter constructions include a baffle plate secured to a can, by way of laser welding. A filter element is operably oriented within the interior of the can. The filter element includes a first end cap and a media pack secured to the first end cap. In some embodiments, the first end cap radially abuts an outer, annular surface of a tubular member of the baffle plate to form a radially directed seal between the first end cap and the tubular member. Liquid filter constructions of this type have a burst strength between 500-800 psi (about 3.4-5.5 MPa), along a longitudinal section of the can wall. Constructions of this type eliminate a roll or lock seam, an inner gasket, an inner compressive spring, and a gasket retainer. Systems for using liquid filters are described herein. Methods of constructing and using these types of filter arrangements are also described.Type: GrantFiled: September 1, 2000Date of Patent: May 7, 2002Assignees: Donaldson Company, Inc., Caterpillar, Inc.Inventors: Eivind Stenersen, David B. Harder, John R. Hacker, Gerald D. Kiral, Ronald W. Streitmatter, Kevin K. Socha
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Patent number: 6322697Abstract: The present disclosure relates to a filter assembly including an outer housing, and a removable filter insert that fits within the housing. The filter insert includes a generally cylindrical filter element. An insert body is connected to the filter element. The insert body includes a top end cap in which a top end of the filter element is potted, and a bottom end cap in which a bottom end of the filter element is potted. The insert body also includes a cylindrical liner or wall that surrounds the filter element. The cylindrical liner is spaced-apart from the filter element such that an annular flow passageway is defined between the cylindrical liner and the filter element. The outer wall is configured to prevent contaminants from escaping from the filter insert and contaminating the inside of the housing.Type: GrantFiled: July 19, 1999Date of Patent: November 27, 2001Assignee: Donaldson Company, Inc.Inventors: John R. Hacker, Michael Jon Gustafson
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Patent number: 5177888Abstract: A discharge chute assembly (30) includes a chute (32) and a pivotal deflector (34), the overlapping end portions of which define a partial spherical or ball joint (40) which maintains a tight seal against backflow and leakage over the entire range of rotation and deflection of the assembly. The assembly (30) is preferably secured to a rotatable base (54) by means of lower pivots (70) and a releasable fastener (72) for collapsibility.Type: GrantFiled: May 14, 1991Date of Patent: January 12, 1993Assignee: The Toro CompanyInventors: Richard A. Thorud, Thomas K. Bricko, John R. Hacker, David E. Larsen, Dean R. Toensing, Donald M. White, III
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Patent number: 4550919Abstract: A seal disposed in the interior of a roller which is used in a system wherein paint is supplied under pressure to the interior of the roller consists of porous resilient filter material which simultaneously performs the function of sealing the exterior opening which must be present to permit rotation and assembly of the roller parts, filtering pigment from the paint so that if any leakage does occur only non-pigment containing liquid will exit, and permitting relative rotation of rotatable parts of the roller with respect to stationary parts of the roller while maintaining the seal. The seal is in the form of a grommet or elongated washer which completely surrounds a shaft support carried on a rotatable part of the roller to which the paint-applying knap is affixed, the support in turn receiving a shaft of a stationary part of the roller to which paint is supplied under pressure in the interior of the roller.Type: GrantFiled: September 14, 1984Date of Patent: November 5, 1985Assignee: Wagner Spray Tech CorporationInventors: Mark Snetting, Dan West, John R. Hacker
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Patent number: 4138181Abstract: A releasable electrical connector having a receptacle component and a plug omponent which can be mated and disconnected by relative rotation between components and can be separated by a straight breakaway force. The receptacle component is provided with bayonet pins that engage semicircular holes in a spring-biased sleeve positioned in the plug component. One end of the spring-biased sleeve is divided into sections and two opposed sections are permanently bent outwardly at an angle sufficiently large so as to clear the bayonet pins on the receptacle component. The semi-circular holes used for locking the bayonet pins are provided in the bent sections and a boss on the interior surface of the plug component compresses the bent sections to lock the bayonet pins in the semi-circular holes. A breakaway force moves the sleeve outwardly from the boss and, when the bent sections clear the boss, the resilient bent sections spring outwardly to release the bayonet pins.Type: GrantFiled: April 25, 1978Date of Patent: February 6, 1979Assignee: The United States of America as represented by the Secretary of the NavyInventors: John R. Hacker, Chris W. Krohne, William H. Miller