Patents by Inventor William David Cook

William David Cook 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).

  • Hydraulic damper for shimmy of aircraft landing gear
    Patent number: 7175134
    Abstract: A hydraulic system for steering an aircraft while taxiing selectively applies pressurized fluid to different ports of a hydraulic motor to turn a landing gear wheel either left or right. Shimmy of the landing gear attached to the wheel is dampened by a device that is coupled across the hydraulic lines that are connected to the motor. That device has a piston in a bore with one hydraulic line connected via an orifice to a first chamber on one side of the piston and the other hydraulic line connected via a different orifice to a second chamber on the other side of the piston. The piston stroke is limited to control the effective oscillation damping amplitude. The shimmy produces an oscillating pressure differential in the two hydraulic lines which is dampened by the device.
    Type: Grant
    Filed: November 22, 2004
    Date of Patent: February 13, 2007
    Assignee: Eaton Corporation
    Inventors: Dayu Hsu, William David Cook
  • Anti-scald faucet system
    Patent number: 5931181
    Abstract: A faucet system includes a cold water control valve and a hot water control valve. These control valves are in communication with each other through a cold water supply conduit and a mixed water conduit. The hot water control valve includes a needle valve and a valve seat. The needle valve is adjustable with respect to the valve seat to adjust the maximum temperature of hot water being supplied by the hot water control valve to the mixed water conduit. In one embodiment, the hot water control valve of the faucet system further includes a pressure balancer disposed between the hot and cold water supply and the hot and cold control valves.
    Type: Grant
    Filed: June 19, 1997
    Date of Patent: August 3, 1999
    Assignee: Emhart Inc.
    Inventors: William David Cook, Yuhung Edward Yeh
  • 2/3 handle pressure balancer system
    Patent number: 5884652
    Abstract: A pressure balancer system 10 having a pressure balancer 20 and a temperature controller 24 on one side of the system and a volume controller 14 on the other side of the system. The pressure balancer 20 receives hot and cold water which it discharges into the temperature controller 24 at substantially constant preselected pressure. The temperature controller 24 is adjustable to set the temperature of the flow to keep the temperature of the anti-scald below the maximum temperature of between 115.degree. F. and 120.degree. F. The volume controller received the temperature adjusted flow from the temperature controller and will set the volume of the flow at the desired volume for discharge therefrom.
    Type: Grant
    Filed: May 27, 1997
    Date of Patent: March 23, 1999
    Assignee: Emhart Inc.
    Inventors: Yuhung Edward Yeh, William David Cook, Mark Steven Bloom