Patents by Inventor Aloysius Gerardus Majella Hemmer

Aloysius Gerardus Majella Hemmer 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).

  • Trip system for an electrical switch having a favorable force-path-characteristic
    Patent number: 6768626
    Abstract: A trip system for an electrical switch comprises first and second magnetic circuits are formed by a yoke and an armature. The second magnetic circuit has a magnetic resistance in a first position of the armature, which resistance is higher than that of the first magnetic circuit and increases in the movement of the armature from the first to the second position.
    Type: Grant
    Filed: September 7, 2001
    Date of Patent: July 27, 2004
    Assignee: Holec Holland N.V.
    Inventor: Aloysius Gerardus Majella Hemmer
  • Switch with contacts which can be seen through a window
    Patent number: 6373355
    Abstract: Switch with at least one set of interacting contacts which is accommodated in the switch housing and can be seen through a transparent window. The contacts are arranged on the free ends of current-carrying strips which run towards the window. At least one of the strips has U-shaped section adjacent to its contact, the opening of the U-shaped section facing away from the window. A plate made from magnetizable material is arranged between the limbs of the U-shaped section of at least one strip.
    Type: Grant
    Filed: November 29, 2000
    Date of Patent: April 16, 2002
    Assignee: Holec Holland N.V.
    Inventors: Albert Jozef Peter Postmus, Aloysius Gerardus Majella Hemmer, Roel Ritsma