Patents by Inventor Guenter Leinweber

Guenter Leinweber 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).

  • Piston pump and drive therefor
    Patent number: 4721439
    Abstract: A device for a drive for pumps with a constant holding and preset operating pressure, has, in order that it can be driven by a commercially available electric motor which can continue running with a closed spray gun, a differential gear with an input shaft (15) for the connection of the motor and two output shafts (8, 30) for connection to the pump and a series connected hydraulic pump and adjustable throttle valve.
    Type: Grant
    Filed: May 15, 1986
    Date of Patent: January 26, 1988
    Assignee: Wiwa Wilhelm Wagner GmbH & Co. KG
    Inventor: Guenter Leinweber