Patents by Inventor Nicolaas R. Kemper

Nicolaas R. Kemper 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).

  • Manipulator
    Patent number: 4929146
    Abstract: A manipulator having an end effector (1) displaceable by means of a four-rod mechanism, a comparatively light and stiff construction being obtained in that each of the rods (3,5,9,11) has a tubular support (73,79,159,181), which is secured by a bridge (147,149,169,191) to the bearing plate (87,93,119,193). The manipulator is particularly suitable for use in automatic mounting equipment.
    Type: Grant
    Filed: April 29, 1988
    Date of Patent: May 29, 1990
    Assignee: U.S. Philips Corporation
    Inventors: Marinus P. Koster, Willem Van Der Hoek, Nicolaas R. Kemper, Hermanus M. J. R. Soemers
  • Driving mechanism and manipulator comprising such a driving mechanism
    Patent number: 4872362
    Abstract: A driving mechanism having a spindle which is provided with a first helical threaded portion having a lefthand direction of rotation and with a second helical threaded portion having a righthand direction of rotation. A pair of spindle guides each engage a respective spindle threaded portion for rotating the spindle and translating the spindle in an axial direction. Each spindle guide has three pairs of runner rollers on a sleeve for centering and supporting the spindle within the sleeves. The three pairs of runner rollers on each sleeve kinematically constrain the six degrees of freedom of the spindle without overconstraint to reduce friction and binding of the spindle in the spindle guides.
    Type: Grant
    Filed: March 22, 1989
    Date of Patent: October 10, 1989
    Assignee: U.S. Philips Corporation
    Inventors: Nicolaas R. Kemper, Henricus J. J. Bouwens, Marinus P. Koster, Willem L. G. De Peuter