Patents by Inventor William Gamberg

William Gamberg 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).

  • Patent number: 4023728
    Abstract: This is a coin slot adapted to be applied to a flip-top type of can after its pull-out tab has been removed leaving a tear drop shaped opening in the top of the can. The coin slot is formed with a cap member dimensioned to cover the opening and extend diametrically across the top of the can and provided with a wedge-shaped extension partially insertable into the opening in the can top provided with a fulcrum groove engaging the can top adjacent the rim of the can such that a lever action is afforded to the cap member upon depressing the latter onto the can top while fracturing part of the can top bordering the opening therein and effecting a locking action between such fractured parts and grooved sides in the wedge-shaped extension.
    Type: Grant
    Filed: January 22, 1976
    Date of Patent: May 17, 1977
    Inventor: William Gamberg