The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 04, 2001
Filed:
May. 24, 1999
Helmut Letzel, Cologne, DE;
K. A. Schmersal GmbH & Co., Wuppertal, DE;
Abstract
The invention relates to a monitoring means for an area, which can be closed off by at least one door, of a mechanical installation, comprising a safety switch which is adjacent to the respective door and can be actuated by means of an elongate, key-like actuator. It is possible for the actuator to be brought into and out of engagement with the safety switch via two actuating handles which are respectively located on the outside and inside of the door and are coupled to one another by a pin. A control means is coupled to the mechanical installation and to the at least one safety switch for releasing and blocking the at least one safety switch. In this arrangement, the actuator, which can be displaced longitudinally in a guide of a covering by actuation of one of the actuating handles, has a rack section which is in engagement with a toothed-ring segment which is coupled to the pin.