Patents by Inventor Ester Errante

Ester Errante 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).

  • Hydraulic pumps or motors of the radial cylinder type
    Patent number: 5357843
    Abstract: A radial cylinder hydraulic pump or motor has radial pistons each provided with a guide pad urged against the cylindrical inner surface of a guide element. A continuous series of rollers cover the cylindrical inner surface and are interposed between such surface and the guide pads. The rollers are prevented from coming in contact with each other by a number of auxiliary smaller rollers. Between each piston and its respective guide pad there is interposed a sliding member which is slidably mounted on the pad along a tangential direction.
    Type: Grant
    Filed: March 18, 1993
    Date of Patent: October 25, 1994
    Inventor: Ester Errante