Patents by Inventor Lewis A. Van Winkle

Lewis A. Van Winkle 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).

  • Water valve
    Patent number: 9470333
    Abstract: A water valve having dual mechanisms for controlling the flow of water for both high pressure and low pressure applications. The first mechanism controlling the flow of water out of a first opening and the second mechanism controlling the flow of water out a second opening. The mechanisms work together to control the flow of water from a closed position to an open position.
    Type: Grant
    Filed: March 3, 2014
    Date of Patent: October 18, 2016
    Assignee: Hawkeye Steel Products, Inc.
    Inventors: Thomas Wenstrand, Lewis Van Winkle, Jonathan Reed Wenstrand
  • Trigger assembly
    Patent number: 7174884
    Abstract: A crossbow having an improved firing assembly. The improved assembly attaches to a bowstring at a single point and draws the string back to have the string retained between a first string retainer and a second string retainer. By allowing the string to be drawn utilizing a single contact point on the bowstring as opposed to the prior art methods of dual engagement points with the bowstring, the cost, maintenance and undesired variance in string retention associated with the prior art are substantially eliminated.
    Type: Grant
    Filed: January 5, 2005
    Date of Patent: February 13, 2007
    Inventors: James J. Kempf, Lewis A. Van Winkle, Alan Van Winkle, Samel Collora
  • Trigger assembly
    Publication number: 20060144381
    Abstract: A crossbow having an improved firing assembly. The improved assembly attaches to a bowstring at a single point and draws the string back to have the string retained between a first string retainer and a second string retainer. By allowing the string to be drawn utilizing a single contact point on the bowstring as opposed to the prior art methods of dual engagement points with the bowstring, the cost, maintenance and undesired variance in string retention associated with the prior art are substantially eliminated.
    Type: Application
    Filed: January 5, 2005
    Publication date: July 6, 2006
    Inventors: James Kempf, Lewis Van Winkle, Alan Winkle, Samel Collora