Patents by Inventor Todd R. Feld

Todd R. Feld 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).

  • Fluid flow regulating valve
    Patent number: 5249773
    Abstract: The stem of a needle valve for regulating fluid flow is threaded into the valve housing. A reversible electric motor, whose shaft engages the stem coaxially, rotates the stem and causes it to move the plug on the end of the stem into and out of a fluid flow port. A helical spring slidably located in a longitudinal bore in the stem is compressed by the shaft to urge the stem toward the housing in order to maintain a working threadable connection between the stem and the housing even when the stem is almost completely withdrawn.
    Type: Grant
    Filed: November 12, 1992
    Date of Patent: October 5, 1993
    Assignee: Kohler Co.
    Inventor: Todd R. Feld