Patents by Inventor John H. Batchelor

John H. Batchelor 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).

  • Vacuum pump closure for canisters and vacuum pack containers
    Patent number: 4218967
    Abstract: A closure device for canisters and a reclosure for vacuum pack containers and comprised of a removeable diaphragm that seals with the opened end of the container and a cover overlying the diaphragm to form a pump chamber therebetween, there being actuating means to axially reciprocate the diaphragm relative to the cover, and check valves in the diaphragm and cover for drawing a high vacuum upon the contents within the said container, and with means to release said vacuum.
    Type: Grant
    Filed: June 25, 1979
    Date of Patent: August 26, 1980
    Inventor: John H. Batchelor