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).

  • Patent number: 7562750
    Abstract: 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: Grant
    Filed: February 10, 2004
    Date of Patent: July 21, 2009
    Assignee: Tenneco Automotive Operating Company Inc.
    Inventors: Luc Lemmens, Sjaak Schel, Koen Vermolen, Simon A de Molina, Walter Spiritus, Bart Vandewal
  • Patent number: 7252181
    Abstract: 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: Grant
    Filed: December 17, 2003
    Date of Patent: August 7, 2007
    Assignee: Tenneco Automotive Operating Company Inc.
    Inventor: Luc Lemmens
  • Patent number: 7083163
    Abstract: 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: Grant
    Filed: September 19, 2003
    Date of Patent: August 1, 2006
    Assignee: Tenneco Automotive Operating Company Inc.
    Inventors: Luc Lemmens, Jacobus Schel
  • Patent number: 7070028
    Abstract: 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: Grant
    Filed: February 7, 2001
    Date of Patent: July 4, 2006
    Assignee: Tenneco Automotive Operating Company Inc.
    Inventors: Koenraad Reybrouck, Luc Lemmens
  • Publication number: 20050173214
    Abstract: 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: Application
    Filed: February 10, 2004
    Publication date: August 11, 2005
    Inventors: Luc Lemmens, Sjaak Schel, Koen Vermolen, Simon de Molina, Walter Spiritus, Bart Vandewal
  • Publication number: 20050133978
    Abstract: 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: Application
    Filed: December 17, 2003
    Publication date: June 23, 2005
    Inventor: Luc Lemmens
  • Publication number: 20050062249
    Abstract: 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: Application
    Filed: September 19, 2003
    Publication date: March 24, 2005
    Inventors: Luc Lemmens, Jacobus Schel
  • Patent number: 6814347
    Abstract: 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: Grant
    Filed: September 19, 2003
    Date of Patent: November 9, 2004
    Assignee: Tenneco Automotive Operating Company, Inc.
    Inventors: Luc Lemmens, Jacobus Schel, Henri Vanhove
  • Publication number: 20020104724
    Abstract: 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: Application
    Filed: February 7, 2001
    Publication date: August 8, 2002
    Inventors: Koenraad Reybrouck, Luc Lemmens
  • Patent number: 6382373
    Abstract: 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: Grant
    Filed: September 20, 1999
    Date of Patent: May 7, 2002
    Assignee: Tenneco Automotive Inc.
    Inventors: Luc Lemmens, Stefaan Duym
  • Patent number: 6364075
    Abstract: 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: Grant
    Filed: October 31, 2000
    Date of Patent: April 2, 2002
    Assignee: Tenneco Automotive Inc.
    Inventors: Luc Lemmens, Stefaan Duym
  • Patent number: 6148969
    Abstract: 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: Grant
    Filed: September 24, 1998
    Date of Patent: November 21, 2000
    Assignee: Tenneco Automotive Inc.
    Inventor: Luc Lemmens
  • Patent number: 5418078
    Abstract: 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: Grant
    Filed: January 21, 1994
    Date of Patent: May 23, 1995
    Assignee: Agfa-Gevaert, N.V.
    Inventors: Guido Desie, Eric Verschueren, Luc Lemmens