Patents by Inventor Spencer M. Group

Spencer M. Group 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).

  • Apparatus utilizing grooved roller for dispensing powder in predetermined quantity and configuration
    Patent number: 4285448
    Abstract: A hopper gravity feeds powder into a closeable chute. The outlet of the chute is in wiping contact with the surface of a journaled and partially enclosed roller. One or more grooves are disposed in the roller for receiving gravity discharged powder from the chute. As the exposed part of the roller is rolled across a surface, the powder is transported by the grooves from the chute to the surface and deposited thereon in a configuration commensurate with that of the depositing groove.
    Type: Grant
    Filed: September 10, 1979
    Date of Patent: August 25, 1981
    Inventor: Spencer M. Group