Patents by Inventor Fredrick Allen Bickers

Fredrick Allen Bickers 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).

  • Exhaust valve for a mold and core blowing machine
    Patent number: 3960173
    Abstract: This invention relates to an exhaust valve to remove air under pressure from the sand magazine of a core or molding machine apparatus which reduces the noise of the exhaust and which includes a housing member for a reciprocable piston that controls an exhaust port of substantial size in such housing and a screen housing projecting through the wall of the sand magazine with a screen mounted in the screen housing to filter incoming air through a relatively large inlet port.
    Type: Grant
    Filed: March 27, 1975
    Date of Patent: June 1, 1976
    Assignee: Martin Engineering Co.
    Inventor: Fredrick Allen Bickers