Patents by Inventor Walter Willhoft

Walter Willhoft 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: 4893656
    Abstract: A diverter valve includes a valve body formed with a pair of openings. Inlet ends of a pair of discharge tubes are respectively carried by and extend through these openings. An elongated elastomeric strp then may be wound about each tube extended end to form a gasket. This wound strip is held in place by a clamp. The valve further includes a movable member formed with an opening to carry an outlet end of an intake tube. The movable member is pivotally attached to the valve body by two spaced apart pairs of link bars. As connected, the pairs of link bars are positioned in a parallel relationship. Operatively attached to one end of the movable member is a piston rod of an air cylinder which in turn is attached to the valve body. During use the movable member may be selectively positioned by the air cylinder to align the outlet end of the intake tube end with either discharge tube inlet end.
    Type: Grant
    Filed: January 30, 1989
    Date of Patent: January 16, 1990
    Inventor: Walter Willhoft