Patents by Inventor John F. Connelly
John F. Connelly 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: 8440079Abstract: A liquid filter arrangement is provided, as well as methods of assembly and use. Advantageous features, relating to a preferred filter cartridge and a preferred slide arrangement, are provided.Type: GrantFiled: June 6, 2011Date of Patent: May 14, 2013Assignee: Donaldson Company, Inc.Inventors: Enrico Greco, Fabrizio Buratto, Mauro Cantoni, John F. Connelly, John R. Hacker
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Publication number: 20110226688Abstract: A liquid filter arrangement is provided, as well as methods of assembly and use. Advantageous features, relating to a preferred filter cartridge and a preferred slide arrangement, are provided.Type: ApplicationFiled: June 6, 2011Publication date: September 22, 2011Applicant: Donaldson Company, Inc.Inventors: Enrico Greco, Fabrizio Buratto, Mauro Cantoni, John F. Connelly, Christian Guernieri, John R. Hacker
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Patent number: 7955502Abstract: 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: GrantFiled: December 22, 2009Date of Patent: June 7, 2011Assignee: Donaldson Company, Inc.Inventors: Enrico Greco, Fabrizio Buratto, Mauro Cantoni, Christian Guernieri, John F. Connelly, John R. Hacker
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Publication number: 20100140157Abstract: 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: December 22, 2009Publication date: June 10, 2010Applicant: Donaldson Company, Inc.Inventors: Enrico Greco, Fabrizio Buratto, Mauro Cantoni, Christian Guernieri, John F. Connelly, John R. Hacker
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Patent number: 7662284Abstract: 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: GrantFiled: June 16, 2005Date of Patent: February 16, 2010Assignee: Donaldson Company, Inc.Inventors: Enrico Greco, Fabrizio Buratto, Mauro Cantoni, Christian Guernieri, John F. Connelly, John R. Hacker
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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: 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: 6096208Abstract: A seal arrangement for fluid filters is provided. The seal arrangement generally concerns compressing a gasket between selected portions of the filter base and filter cartridge. A preferred frusto-conical configuration is provided, to advantage. Methods of assembly and use are described, as well as preferred filter base configurations and preferred filter cartridge configurations.Type: GrantFiled: August 19, 1997Date of Patent: August 1, 2000Assignee: Donaldson Company, Inc.Inventors: John F. Connelly, Jeff J. Theisen
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Patent number: 6083381Abstract: A filter arrangement for filtering fluid comprises a housing and a valve arrangement. The housing includes an inlet, an outlet, and a draining aperture. The valve arrangement is constructed and arranged to move between a closed position and an open position without the use of threads. The closed position prevents evacuation of fluid from the housing through the draining aperture, and the open position permits evacuation of fluid from the housing through the draining aperture. One valve arrangement may include a pair of ports and a pair of air vents. The valve is actuated by aligning the ports and air vents on a sliding sealing surface. An indicator arrangement including a float and a clear window is provided to give the user a visual indication of the level of water within the filter. Methods for using the constructions herein are provided.Type: GrantFiled: August 19, 1997Date of Patent: July 4, 2000Assignee: Donaldson Company, Inc.Inventors: John F. Connelly, Brent A. Gulsvig, Mark G. Soderlund, Jeff J. Theisen
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Patent number: 6012485Abstract: A filter arrangement for filtering fluid comprises a housing and a valve arrangement. The housing includes an inlet, an outlet, and a draining aperture. The valve arrangement is constructed and arranged to move between a closed position and an open position without the use of threads. The closed position prevents evacuation of fluid from the housing through the draining aperture, and the open position permits evacuation of fluid from the housing through the draining aperture. One valve arrangement may include a pair of ports and a pair of air vents. The valve is actuated by aligning the ports and air vents on a sliding sealing surface. An indicator arrangement including a float and a clear window is provided to give the user a visual indication of the level of water within the filter. Methods for using the constructions herein are provided.Type: GrantFiled: September 15, 1998Date of Patent: January 11, 2000Assignee: Donaldson Company, Inc.Inventors: John F. Connelly, Brent A. Gulsvig, Mark G. Soderlund, Jeff J. Theisen
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Patent number: 5501791Abstract: A filter head adapted for use with spin-on filters is shown. The filter head carries a spring load piston which is normally biased to close a filter bypass channel. A fluid pressure increase caused by a clogged filter causes the piston to move opening the bypass and at the same time opening a signal channel between a source of fluid pressure and a signal outlet.Type: GrantFiled: October 24, 1994Date of Patent: March 26, 1996Assignee: Donaldson Company, Inc.Inventors: Jeffrey J. Theisen, John F. Connelly
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Patent number: 4883083Abstract: A filter head assembly includes a relief valve assembly therein, and is adapted for use in a spin-on filter or the like. When the relief valve assembly is in a closed mode of operation, fluid flow through the filter head, and an associated filter, results in conventional filtration. When the relief valve assembly is in open mode of operation, the filter is substantially bypassed permitting fluid to flow directly through the filter head, with filtration. The relief valve assembly includes a movable piston member therein, which opens and closes for the respective flow passage outwardly from a lateral takeoff port. Any substantial, undesirable, lateral forces acting upon a piston member may be substantially reduced by means of a lateral pressure release system provided according to the present invention. Generally, the lateral pressure-relief system comprises an annular recess formed in the piston member.Type: GrantFiled: December 29, 1988Date of Patent: November 28, 1989Assignee: Donaldson Company, Inc.Inventors: Patrick Fisher, Jack Stifelman, John F. Connelly, Jeff J. Theisen, Patrick Fisher
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Patent number: 4615800Abstract: The present invention is directed to a duplex filter apparatus which provides for a first primary filter path and a second path for secondary filtration. The first path includes a shutoff valve on one side of the primary filter and a check valve on the downstream side. The second path includes a regulating bypass valve on the upstream side of the secondary filter and a check valve on the downstream side. The regulating bypass valve gradually shifts fluid flow from the first path to the second path when differential pressure across the primary filter increases beyond a predetermined level. A reservoir return bypass valve directs fluid flow gradually from the secondary filter when differential pressure across the secondary filter increases beyond a predetermined level. Bleed valves are provided to relieve pressure on filter elements when the filter elements are isolated so that servicing may occur.Type: GrantFiled: January 14, 1985Date of Patent: October 7, 1986Assignee: Donaldson Company, Inc.Inventors: Jack Stifelman, Patrick Fisher, John F. Connelly