Patents by Inventor Frederick C. Ballman

Frederick C. Ballman 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).

  • Anti-freeze arrangement for sprinkler systems
    Patent number: 4326589
    Abstract: An antifreeze arrangement especially for automatic sprinkler systems comprising a frangible membrane, secured to a bellows interposed in the water supply pipe to the sprinkler system, antifreeze solution downstream of the membrane with water upstream thereof, the membrane being one that breaks out but does not separate from the bellows when a sprinkler relieves the pressure on the downstream side. Pressure equalizing piping connections, filling piping, and a specific gravity indicator are provided.
    Type: Grant
    Filed: May 14, 1979
    Date of Patent: April 27, 1982
    Assignee: Baldor Electric Company
    Inventor: Frederick C. Ballman