Patents by Inventor Grandini Angelo

Grandini Angelo 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).

  • Magnetic work-holder
    Patent number: 4837540
    Abstract: A magnetic holding device, comprising magnetically activable holding surface having pole members of different polarities, and at least a first and a second single-pole extension members for said pole members of opposite polarities. Each pole-extension member comprises a base portion fastened to a pole member and a movable portion sliding on said base portion along an inclined surface the sliding surfaces of said first and second pole-extension members are slanted in opposite angular directions in respect to said holding surface of the device.
    Type: Grant
    Filed: October 3, 1988
    Date of Patent: June 6, 1989
    Assignee: Tecnomagnete S.p.A.
    Inventors: Cardone Michele, Grandini Angelo, Zaramella Bruno