Patents by Inventor Douglas T. Allen

Douglas T. Allen 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: 9198556
    Abstract: A method of operating a dishwasher having a tub at least partially defining a treating chamber and at least one rotating sprayer provided in the treating chamber to determine a standstill condition of the rotating sprayer during an automatic cycle of operation that includes a rotation of the spray arm.
    Type: Grant
    Filed: January 29, 2013
    Date of Patent: December 1, 2015
    Assignee: Whirlpool Corporation
    Inventors: Douglas T. Allen, Paul R. Johnson, Blayne C. Smith
  • Patent number: 8968486
    Abstract: A dishwashing machine configured to detect the presence of rinse aid in fluid in a washing chamber of the dishwashing machine. An electronic controller selects the drying stage of the dishwashing cycle based on whether rinse aid is present.
    Type: Grant
    Filed: September 19, 2013
    Date of Patent: March 3, 2015
    Assignee: Whirlpool Corporation
    Inventors: Douglas T. Allen, Jonathan D. King, Brooke L. Lau, Jacek Szostak
  • Patent number: 8540820
    Abstract: A dishwashing machine configured to detect the presence of rinse aid in fluid in a washing chamber of the dishwashing machine. An electronic controller selects the drying stage of the dishwashing cycle based on whether rinse aid is present.
    Type: Grant
    Filed: October 21, 2009
    Date of Patent: September 24, 2013
    Assignee: Whirlpool Corporation
    Inventors: Douglas T. Allen, Jonathan D. King, Brooke L. Lau, Jacek Szostak
  • Patent number: 4232649
    Abstract: A trigger-operated bowstring release especially designed for hunting has an elongated, rigid body of dogleg configuration, the rear portion of the body presenting a handle which is gripped by the archer to hold the release in the shooting position. The tip of the front portion is tapered and houses a rotary holding member having an open, bowstring-engaging hook that normally projects clear of the body and laterally outwardly from the side thereof that faces away from the archer when the release is held in the shooting position. The member is engaged by a sear carried by a trigger spaced rearwardly from the hook adjacent the handle where it may be operated by the index finger of the shooter; thus the hook receives and holds the bowstring until the trigger is operated to disengage the sear. Two return springs automatically reset the hook and trigger after the bowstring is released to permit rapid initial and repeat shots.
    Type: Grant
    Filed: May 16, 1978
    Date of Patent: November 11, 1980
    Inventors: Holless W. Allen, Douglas T. Allen