Patents by Inventor Harold Bienenfeld

Harold Bienenfeld 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).

  • Pressurized tennis ball container
    Patent number: 4019629
    Abstract: A pressurized tennis ball container has a cover which fits onto a standard metal tennis ball can. The cover includes a hand pump having a sliding seal which opens to permit rapid refilling of the hand pump cylinder with air during the upstroke of the piston, an air pressure indicator, which indicates the pressure within the can, a pressure release member to release the air pressure within the can to facilitate opening the cover, and an improved diaphragm valve.
    Type: Grant
    Filed: February 13, 1975
    Date of Patent: April 26, 1977
    Inventors: Robert B. Dubner, Harold Bienenfeld