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:
Oct. 13, 1998
Filed:
Feb. 21, 1997
Klaus Schoneweiss, Hattingen, DE;
Jerzy Welnic, Hattingen, DE;
O&K Rolltreppen GmbH & Co. KG, Hattingen, DE;
Abstract
An arrangement is provided for monitoring at least one of raising and lowering of individual steps of a band of steps of an escalator The escalator includes guide rails for the steps, a driving gear, and endless driving chains provided in a region of balustrade bases and being driven by the driving gear. The guide rails have a transition curve from a horizontal run to a vertical run. Each step includes rollers supported on the guide rails and is held between the endless driving chains. A safety device is disposed essentially in the transition curve for switching off the driving gear. The safety device comprises a spring-activated first component positioned below the band of steps at a predeterminable distance to the continuously running steps and extending in a direction of the steps; a switch-off device coupled to the driving gear for switching off the driving gear, the first component being operatively coupled to the switch-off device; and a second component disposed in a region of the steps and being responsive to a raising or lowering of one of the steps in the transition curve for causing deflection of the first component, which deflection activates the switch-off device for switching off the drive gear.