Patents by Inventor Renate Hoffmann

Renate Hoffmann 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: 8226279
    Abstract: The invention relates to a lighting fixture (1) which comprises at least one lighting fixture housing (2) and a cover (3) and which is constructed particularly as a safety and/or emergency exit light and/or as an explosion-proof light. A light is held by a clamp connection (5) at the lighting fixture housing, and at least one auxiliary electrical device (6) into the light is disposed at the lighting fixture housing. The lighting fixture can be expanded with a lower expense for the installation and with all explosion-protection measures observed, by virtue of the lighting fixture housing (2) having conductor rails (7) for supplying electricity to the light and to the auxiliary electrical device, where the auxiliary electrical device is constructed as a plug-in module which can be plugged onto the conductor rails.
    Type: Grant
    Filed: February 22, 2008
    Date of Patent: July 24, 2012
    Assignee: Cooper Crouse-Hinds GmbH
    Inventors: Friedhelm Harnischmacher, Renate Hoffmann, Jens Burmeister, Gerhard Schwarz, Heinz Rudolf Liedtke
  • Publication number: 20100271812
    Abstract: The invention relates to a lighting fixture (1) which comprises at least one lighting fixture housing (2) and a cover (3) and which is constructed particularly as a safety and/or emergency exit light and/or as an explosion-proof light. A lighting means (4) is held by means of a clamp connection (5) at the lighting fixture housing, and at least one auxiliary electrical device (6) into the lighting means is disposed at the lighting fixture housing. In order to improve such a lighting fixture in such a way that the lighting fixture can be expanded easily and with a simplified construction in a cost-effective manner, with a lower expense for the installation and a lower expense of time, and with all explosion-protection measures observed, the lighting fixture housing (2) has conductor rails (7) for supplying electricity to the lighting means and to the auxiliary electrical device, wherein the auxiliary electrical device is constructed as a plug-in module which can be plugged onto the conductor rails.
    Type: Application
    Filed: February 22, 2008
    Publication date: October 28, 2010
    Inventors: Friedhelm Harnischmacher, Renate Hoffmann, Jens Burmeister, Gerhard Schwarz, Heinz Rudolf Liedtke