Patents by Inventor Marcello Zen

Marcello Zen 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).

  • Device for regulating the height of the cutter platform of combine harvesters
    Patent number: 4180966
    Abstract: Device for regulating the height of the cutter platform of a combine harvester by its automatic return to an adjustable, predetermined height after lowering by a jack includes a rod which slides freely downwards causing an abutment surface to compress a spring which reacts through a double arm lever to reset a distributor valve, causing the jack to raise the platform.
    Type: Grant
    Filed: September 28, 1978
    Date of Patent: January 1, 1980
    Assignee: Pietro Laverda S.p.A.
    Inventor: Marcello Zen