Patents by Inventor Garrett Yarbrough

Garrett Yarbrough 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: 4063443
    Abstract: A tool for releasably gripping a rod comprising: a structure supporting a rod clamping assembly which is movable relative to the structure; a release to cooperate with the clamping assembly to release a said rod gripped by the clamping assembly; and means for producing the relative movement wherein the means for producing the relative movement includes a motion converter to convert rotary motion of a first member into linear motion on a second member and vice versa; a clutch connected to transmit rotary motion to the first member; means for selectively engaging and disengaging the clutch; and a spring connected to bias the second member in opposition to the linear motion produced by the rotary motion; the second member being connected to transmit the linear motion to the clamping assembly when said clutch is engaged; the clutch disengaging means disengaging the clutch when the relative motion has produced a predetermined travel of the clamping assembly and the spring being connected to return the second membe
    Type: Grant
    Filed: November 5, 1976
    Date of Patent: December 20, 1977
    Assignee: H. K. Porter Company, Inc.
    Inventor: Garrett Yarbrough