Patents by Inventor Hendrikus Adrianus Arnoldus Pelders

Hendrikus Adrianus Arnoldus Pelders 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).

  • Hydraulically controllable constant speed drive and method for the design thereof
    Patent number: 7175554
    Abstract: A hydraulically controllable constant speed drive, includes an input shaft (10) provided with an input pulley (1), an output shaft (20) provided with an output pulley (2) and a drive belt (3). Each pulley (1; 2) is provided with two pulley sheaves (11, 12; 21, 22) that are mutually axially displaceable under the influence of a hydraulic pressure to be exerted in a piston-cylinder assembly (14, 15; 24, 25) associated with the pulley (1, 2) and that define a tapered groove of variable axial width wherein the drive belt (3) is accommodated. An input spring (17) is provided that realizes an axial force urging the pulley sheaves (11, 12) of the input pulley (1) towards each other to prevent slip of the drive belt (3) when the hydraulic pressure is negligible.
    Type: Grant
    Filed: June 29, 2001
    Date of Patent: February 13, 2007
    Assignee: Van Doorne's Transmissie B.V.
    Inventors: Johannes Gerardus Ludovicus Maria Van Spijk, Hendrikus Adrianus Arnoldus Pelders
  • Hydraulically controlable constant speed drive and method for the design thereof
    Publication number: 20040014539
    Abstract: The invention relates to a hydraulically controllable constant speed drive, comprising an input shaft (10) provided with an input pulley (1), an output shaft (20) provided with an output pulley (2) and a drive belt (3). Each pulley (1; 2) is provided with two pulley sheaves (11, 12; 21, 22) that are mutually axially displaceable under the influence of a hydraulic pressure to be exerted in a piston-cylinder assembly (14, 15; 24, 25) associated with the pulley (1, 2) and that define a tapered groove of variable axial width wherein the drive belt (3) is accommodated. An input spring (17) is provided that realises an axial force urging the pulley sheaves (11, 12) of the input pulley (1) towards each other to prevent slip of the drive belt (3) when the hydraulic pressure is negligible.
    Type: Application
    Filed: June 16, 2003
    Publication date: January 22, 2004
    Inventors: Johannes Gerardus Ludovicus Mario Van Spijk, Hendrikus Adrianus Arnoldus Pelders