Patents by Inventor William C. Gregge

William C. Gregge 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: 5974998
    Abstract: A device that prevents birds from landing atop a masthead of a boat or wind indicating devices mounted on the masthead includes an upstanding post having an upper end positioned above the top of the mast and any wind indicating devices. A plurality of rods radiate outwardly from the upper end in interfering relation to the landing area atop the masthead or wind indicating devices to foil landing attempts. The post is attached to a halyard and the device is raised in an inverted configuration when the halyard is raised. The device is also attached to a downhaul line so that when the device reaches the top of the mast, pulling on the downhaul line inverts the device and deploys it into its operative configuration. The radially disposed rods positioned in the landing area deprive birds of the clearance space they need when landing.
    Type: Grant
    Filed: December 15, 1998
    Date of Patent: November 2, 1999
    Inventor: William C. Gregg, III
  • Patent number: 4074097
    Abstract: A pivot arm is used in a liquid flow switch or liquid level device to transmit a force generated within a fluid chamber through the wall of the chamber to the outside. A pivot pin pivots the arm in a bore in an insert in the wall and a seal is provided in the form of a rolling diaphragm having its outer periphery sealed to the periphery of the bore and its inner portion sealed to the arm. Rocking movement of the arm is subject to very little resistance by the rolling diaphragm and yet the necessary fluid tight seal is maintained. The rocking movement is protected against contamination by a unique flexible boot and filter combination.
    Type: Grant
    Filed: October 18, 1976
    Date of Patent: February 14, 1978
    Inventors: Harold D. Hutchinson, William C. Gregge