Patents by Inventor Ralf Hilmert

Ralf Hilmert 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).

  • Protective-door handle
    Patent number: 6531655
    Abstract: The invention relates to a protective-door handle for a protective door which is fitted with at least one safety tumbler and is intended for a protective region of a machine, mechanical installation or the like, having a central leg and two side legs which are connected thereto and can be fastened to the protective door, the central leg having a hole which opens into a wiring opening opened to the outer circumference of the central leg, there being inserted into the hole a release element which is intended for unlocking the safety tumbler and whose electric connections are connected in the wiring opening to corresponding supply lines, the wiring opening being plugged with a casting compound.
    Type: Grant
    Filed: June 27, 2001
    Date of Patent: March 11, 2003
    Assignee: stuete Schaltgerate GmbH & Co. KG
    Inventor: Ralf Hilmert
  • PROTECTIVE-DOOR HANDLE
    Publication number: 20030000819
    Abstract: The invention relates to a protective-door handle for a protective door which is fitted with at least one safety tumbler and is intended for a protective region of a machine, mechanical installation or the like, having a central leg and two side legs which are connected thereto and can be fastened to the protective door, the central leg having a hole which opens into a wiring opening opened to the outer circumference of the central leg, there being inserted into the hole a release element which is intended for unlocking the safety tumbler and whose electric connections are connected in the wiring opening to corresponding supply lines, the wiring opening being plugged with a casting compound.
    Type: Application
    Filed: June 27, 2001
    Publication date: January 2, 2003
    Inventor: Ralf Hilmert