Patents by Inventor C. Marshall Davidson

C. Marshall Davidson 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).

  • Adjustable valving rod
    Patent number: 4838458
    Abstract: In a plural component foam dispensing apparatus there is provided an adjustable valving rod which permits the length of the rod to be more accurately adjusted to compensate for varying tolerances and permit the rod to extend out the end of the mixing chamber in its extended position and to retract to the rear of the inlet orifices in its retracted position.
    Type: Grant
    Filed: February 23, 1988
    Date of Patent: June 13, 1989
    Assignee: Olin Corporation
    Inventor: C. Marshall Davidson
  • Urethane foam dispensing gun
    Patent number: D314811
    Type: Grant
    Filed: May 4, 1987
    Date of Patent: February 19, 1991
    Assignee: Olin Corporation
    Inventors: Robert C. Gammons, C. Marshall Davidson