Patents by Inventor Robertus Rijs

Robertus Rijs 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).

  • Actuator arrangement for active vibration isolation comprising an inertial reference mass
    Publication number: 20070035074
    Abstract: Actuator arrangement with an actuator (8), a reference mass (22), a spring (24) and a first sensor (26; 42, 43; 32, 36). The actuator (8) applies a force between a first object (2) and to a second object (16; 54). The reference mass (22) is, in use, supported by a third object (16; 56) by means of the spring (24). The first sensor (26; 42, 43; 32, 36) generates a first distance signal that depends on a first distance (z2; z5, z6; z3, z4) between the reference mass (22) and the first object (2) and is applied to a controller (6) to actuate the actuator (8).
    Type: Application
    Filed: August 17, 2004
    Publication date: February 15, 2007
    Inventors: Michael Vervoordeldonk, Theo Ruijl, Robertus Rijs, Johannes Muller