Patents by Inventor Robert G. Markowski

Robert G. Markowski 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).

  • Patent number: 4778961
    Abstract: A compact electric safety switch including a rotatably mounted double contact blade assembly. Heavy duty compression springs are positioned under the blade assembly for rapid make and break connection between opposing line and load contact stabs. A pair of contact springs directs the contact blade during transit between the line and load contact stabs and serves to increase the contact pressure between the contact blade and the contact stabs when the contact blade is inserted therein.
    Type: Grant
    Filed: November 16, 1987
    Date of Patent: October 18, 1988
    Assignee: General Electric Company
    Inventors: Andre J. M'Sadoques, Robert G. Markowski
  • Patent number: 4675481
    Abstract: A compact electric safety switch including a rotatably mounted double contact assembly. Heavy duty compression springs are positioned under the blade assembly for rapid make and break connection between a pair of contact stabs. The series arrangement between the pair of contact stabs generates a corresponding pair of electrical arcs during the make and break occurrence which is less intense and of shorter duration than standard single contact arrangements. The pair of less intense arcs of short duration allow for a corresponding pair of arc chutes of smaller size than standard single arc chute arrangements. The contact stabs that receive the double contact blade are staggered to reduce electromagnetic attraction between the contact and the stabs.
    Type: Grant
    Filed: October 9, 1986
    Date of Patent: June 23, 1987
    Assignee: General Electric Company
    Inventors: Robert G. Markowski, Stanley M. Balcezak, Jr., John J. Bottalico, John A. Morby, Robert J. Sabatella