Patents by Inventor Darrel Wooldridge

Darrel Wooldridge 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: 4135471
    Abstract: A universal, knob-dial control member for association with the control shaft of a cold control regulator wherein the knob member is uniquely configured so as to be adaptable to be used on a plurality of cold control regulators in and of itself or alternately, adapted to have the dial member disassociatible which accommodates still other cold control regulators. The provision of the knob-dial control member in kit form, having selectable knob members, provides a means whereby inventory is substantially reduced and a service man has the ability to service a large number of cold control regulators without the need of having a large number of specialty repair and replacement parts.
    Type: Grant
    Filed: October 25, 1977
    Date of Patent: January 23, 1979
    Assignee: Gem Products, Inc.
    Inventors: Darrel Wooldridge, Eugene T. McKinnon
  • Patent number: D253686
    Type: Grant
    Filed: October 25, 1977
    Date of Patent: December 18, 1979
    Assignee: Gem Products, Inc.
    Inventors: Darrel Wooldridge, Eugene T. McKinnon