Patents by Inventor Stephen A Walker

Stephen A Walker 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: 8117703
    Abstract: A modular chemical delivery system is designed to be readily convertible from use with a warewashing system to use with a laundry system, or vice-versa, merely by the replacement of one chip in the controller of the system. The dispensing system is also readily expandable by adding additional satellite pumps in order to inject additional chemicals into a single washing unit, and/or to supply chemicals to additional washing units. Plug and play technology is used so that control intelligence can be distributed from the main system controller to satellite controllers, and so that additional satellite units may be readily added, identified, and properly integrated into the dispensing system.
    Type: Grant
    Filed: September 29, 2009
    Date of Patent: February 21, 2012
    Assignee: Knight, LLC.
    Inventors: Stephen A. Walker, Michael T. Whiting
  • Patent number: 8032312
    Abstract: An Inductive Probe/Conductive Probe Emulator is designed to replace conductive probes at a much lower cost than existing inductive probe systems. The conductivity probe simulator is usable with any industrial controller that uses a standard two wire conductivity probe interface. A continuously variable semiconductor resistive element is employed to match the conductivity of any conductive probe. The system uses the inductive probe reading to adjust the resistive element to the correct value. The conductivity probe simulator can be configured to emulate any conductivity probe with any probe constant by downloading configuration parameters to the probe controller or by setting configuration switches on the controller module. Additionally, the inventive probe simulator is equipped with an embedded temperature sensing element, giving the system a capability to perform a temperature correction in the controller section, if necessary.
    Type: Grant
    Filed: February 5, 2009
    Date of Patent: October 4, 2011
    Assignee: Knight, LLC
    Inventor: Stephen A. Walker
  • Patent number: 7658088
    Abstract: A modular chemical delivery system is designed to be readily convertible from use with a warewashing system to use with a laundry system, or vice-versa, merely by the replacement of one chip in the controller of the system. The dispensing system is also readily expandable by adding additional satellite pumps in order to inject additional chemicals into a single washing unit, and/or to supply chemicals to additional washing units. Plug and play technology is used so that control intelligence can be distributed from the main system controller to satellite controllers, and so that additional satellite units may be readily added, identified, and properly integrated into the dispensing system.
    Type: Grant
    Filed: March 3, 2006
    Date of Patent: February 9, 2010
    Assignee: Knight, LLC
    Inventors: Stephen A. Walker, Michael T. Whiting
  • Publication number: 20100018991
    Abstract: A modular chemical delivery system is designed to be readily convertible from use with a warewashing system to use with a laundry system, or vice-versa, merely by the replacement of one chip in the controller of the system. The dispensing system is also readily expandable by adding additional satellite pumps in order to inject additional chemicals into a single washing unit, and/or to supply chemicals to additional washing units. Plug and play technology is used so that control intelligence can be distributed from the main system controller to satellite controllers, and so that additional satellite units may be readily added, identified, and properly integrated into the dispensing system.
    Type: Application
    Filed: September 29, 2009
    Publication date: January 28, 2010
    Applicant: KNIGHT LLC
    Inventors: Stephen A. Walker, Michael T. Whiting
  • Patent number: 7499810
    Abstract: An Inductive Probe/Conductive Probe Emulator is designed to replace conductive probes at a much lower cost than existing inductive probe systems. The conductivity probe simulator is usable with any industrial controller that uses a standard two wire conductivity probe interface. A continuously variable semiconductor resistive element is employed to match the conductivity of any conductive probe. The system uses the inductive probe reading to adjust the resistive element to the correct value. The conductivity probe simulator can be configured to emulate any conductivity probe with any probe constant by downloading configuration parameters to the probe controller or by setting configuration switches on the controller module. Additionally, the inventive probe simulator is equipped with an embedded temperature sensing element, giving the system a capability to perform a temperature correction in the controller section, if necessary.
    Type: Grant
    Filed: September 24, 2004
    Date of Patent: March 3, 2009
    Assignee: Knight, LLC.
    Inventor: Stephen A. Walker
  • Patent number: 6959948
    Abstract: A gimp made of flexible, compressible material attaches an edge of a trim piece to a panel. The gimp is bonded to the panel without visual gaps between the gimp and the panel. The gimp has a slip connection to the trim piece. The slip connection is provided by a slot in the gimp slidably receiving the edge of the trim piece.
    Type: Grant
    Filed: September 3, 2003
    Date of Patent: November 1, 2005
    Assignee: DaimlerChrysler Corporation
    Inventors: Jonathan P Varnhagen, Stephen A Walker, Andrew R Kavc