Patents by Inventor Luc Lemmens
Luc Lemmens 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: 7562750Abstract: An air pressure proportional damper includes a first chamber and a second chamber. The first chamber is fluidly attached to the second chamber through an air adjustment valve. The air adjustment valve regulates flow from the first chamber to the second chamber in proportion to air pressure received from an accompanying air spring.Type: GrantFiled: February 10, 2004Date of Patent: July 21, 2009Assignee: Tenneco Automotive Operating Company Inc.Inventors: Luc Lemmens, Sjaak Schel, Koen Vermolen, Simon A de Molina, Walter Spiritus, Bart Vandewal
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Patent number: 7252181Abstract: A suspension system includes an air spring and a shock absorber disposed between the sprung and unsprung portions of a vehicle. A vehicle height sensor sends signals to a control system which adjusts the height of the vehicle by increasing or decreasing the air pressure within the spring. This same air pressure is provided to the shock absorber in order to increase the damping rate for high loads and decrease the damping rate for low loads. The air pressure to the shock absorber is provided to a valve assembly which controls fluid flow between the working chamber of the shock absorber and a reserve chamber.Type: GrantFiled: December 17, 2003Date of Patent: August 7, 2007Assignee: Tenneco Automotive Operating Company Inc.Inventor: Luc Lemmens
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Patent number: 7083163Abstract: A suspension system for a vehicle includes a frequency dependent damper (FDD) or shock absorber defining a first pressurized working chamber and an air spring assembly defining a second pressurized working chamber. A booster enables pressure communication between the first pressurized working chamber and the second pressurized working chamber. The booster includes a resilient member that effects booster performance.Type: GrantFiled: September 19, 2003Date of Patent: August 1, 2006Assignee: Tenneco Automotive Operating Company Inc.Inventors: Luc Lemmens, Jacobus Schel
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Patent number: 7070028Abstract: A gas shock absorber has a pressure tube which defines a working chamber. A piston divides the working chamber into an upper working chamber and a lower working chamber. A flow path extends through the piston to provide fluid communication between the upper and lower working chambers. A valve body is attached to the pressure tube. The valve body defines a flow path between the working chamber and a fluid chamber. The fluid chamber is in communication with either the upper working chamber or the lower working chamber. The fluid chamber can be defined within the pressure tube, between the pressure tube and a chamber tube or it can be defined by an air spring assembly.Type: GrantFiled: February 7, 2001Date of Patent: July 4, 2006Assignee: Tenneco Automotive Operating Company Inc.Inventors: Koenraad Reybrouck, Luc Lemmens
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Publication number: 20050173214Abstract: An air pressure proportional damper includes a first chamber and a second chamber. The first chamber is fluidly attached to the second chamber through an air adjustment valve. The air adjustment valve regulates flow from the first chamber to the second chamber in proportion to air pressure received from an accompanying air spring.Type: ApplicationFiled: February 10, 2004Publication date: August 11, 2005Inventors: Luc Lemmens, Sjaak Schel, Koen Vermolen, Simon de Molina, Walter Spiritus, Bart Vandewal
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Publication number: 20050133978Abstract: A suspension system includes an air spring and a shock absorber disposed between the sprung and unsprung portions of a vehicle. A vehicle height sensor sends signals to a control system which adjusts the height of the vehicle by increasing or decreasing the air pressure within the spring. This same air pressure is provided to the shock absorber in order to increase the damping rate for high loads and decrease the damping rate for low loads. The air pressure to the shock absorber is provided to a valve assembly which controls fluid flow between the working chamber of the shock absorber and a reserve chamber.Type: ApplicationFiled: December 17, 2003Publication date: June 23, 2005Inventor: Luc Lemmens
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Publication number: 20050062249Abstract: A suspension system for a vehicle includes a frequency dependent damper (FDD) or shock absorber defining a first pressurized working chamber and an air spring assembly defining a second pressurized working chamber. A booster enables pressure communication between the first pressurized working chamber and the second pressurized working chamber. The booster includes a resilient member that effects booster performance.Type: ApplicationFiled: September 19, 2003Publication date: March 24, 2005Inventors: Luc Lemmens, Jacobus Schel
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Patent number: 6814347Abstract: A suspension system for a vehicle includes a frequency dependent damper (FDD) shock absorber defining a first pressurized working chamber. An air spring assembly defines a second pressurized working chamber. A booster enables pressure communication between the first pressurized working chamber and the second pressurized working chamber.Type: GrantFiled: September 19, 2003Date of Patent: November 9, 2004Assignee: Tenneco Automotive Operating Company, Inc.Inventors: Luc Lemmens, Jacobus Schel, Henri Vanhove
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Publication number: 20020104724Abstract: A gas shock absorber has a pressure tube which defines a working chamber. A piston divides the working chamber into an upper working chamber and a lower working chamber. A flow path extends through the piston to provide fluid communication between the upper and lower working chambers. A valve body is attached to the pressure tube. The valve body defines a flow path between the working chamber and a fluid chamber. The fluid chamber is in communication with either the upper working chamber or the lower working chamber. The fluid chamber can be defined within the pressure tube, between the pressure tube and a chamber tube or it can be defined by an air spring assembly.Type: ApplicationFiled: February 7, 2001Publication date: August 8, 2002Inventors: Koenraad Reybrouck, Luc Lemmens
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Patent number: 6382373Abstract: A gas shock absorber has a pressure tube which defines a working chamber. A piston divides the working chamber into an upper working chamber and a lower working chamber. A series of extension passages extend through the piston and are opened and closed by an extension valve assembly. A series of compression passages extend through the piston and are opened and closed by a compression valve assembly. An open flow path defined by the extension valve assembly extends through the piston between the upper and lower working chambers. A rod guide assembly is located between the pressure tube and a piston rod. The rod guide assembly includes an oil chamber for sealing and lubricating the piston rod.Type: GrantFiled: September 20, 1999Date of Patent: May 7, 2002Assignee: Tenneco Automotive Inc.Inventors: Luc Lemmens, Stefaan Duym
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Patent number: 6364075Abstract: A gas shock absorber has a pressure tube which defines a working chamber. A piston divides the working chamber into an upper working chamber and a lower working chamber. A series of extension passages extend through the piston and are opened and closed by an extension valve assembly. A first and a second series of compression passages extend through the piston and are opened and closed by a first and a second compression valve assembly, respectively. A rod guide assembly is located between the pressure tube and a piston rod. The rod guide assembly includes an oil chamber for sealing and lubricating the piston rod.Type: GrantFiled: October 31, 2000Date of Patent: April 2, 2002Assignee: Tenneco Automotive Inc.Inventors: Luc Lemmens, Stefaan Duym
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Patent number: 6148969Abstract: A gas shock absorber has a pressure tube which defines a working chamber. A piston divides the working chamber into an upper working chamber and a lower working chamber. A series of extension passages extend through the piston and are always left open. A series of compression passages extend through the piston and are opened and closed by a compression valve assembly. A rod guide assembly is located between the pressure tube and a piston rod. The rod guide assembly includes an oil chamber for sealing and lubricating the piston rod.Type: GrantFiled: September 24, 1998Date of Patent: November 21, 2000Assignee: Tenneco Automotive Inc.Inventor: Luc Lemmens
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Patent number: 5418078Abstract: An ink-jet recording element is provided comprising a polymeric film substrate or a resin coated paper substrate and at least one ink-receiving layer coated thereon comprising at least one binder and at least one mordanting agent characterized in that said mordanting agent comprises a polymer containing a phosphonium moiety. Preferably said mordanting agent consists of a copolymer of ethylenically unsaturated monomers containing a phosphonium moiety co-polymerized with N-vinyl imidazole or 2-methyl-2-vinyl imidazole and optionally other co-polymerizable monomers or of a mixture of from 5 to 70% by weight, of a polymer containing a phosphonium moiety, and obtained by homo- or co-polymerization of ethylenically unsaturated monomers and from 30 to 95% by weight, of a second polymer, which is free from cationic groups and has been obtained by homo- or co-polymerization of N-vinyl imidazole or 2-methyl-2-vinyl imidazole and optionally other co-polymerizable monomers.Type: GrantFiled: January 21, 1994Date of Patent: May 23, 1995Assignee: Agfa-Gevaert, N.V.Inventors: Guido Desie, Eric Verschueren, Luc Lemmens