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. 19, 2004
Filed:
Dec. 30, 2002
Richard Lauch, Hopatcong, NJ (US);
Roger Frazier, Aspers, PA (US);
Inventio AG, Hergiswil, CH;
Abstract
An escalator brake torque monitoring apparatus comprises a brake having a brake arm with a mounting point for pivotally affixing the brake to a fixed element of the escalator. A torque sensor is mounted to the brake arm at the mounting point and is affixed to the fixed element. The torque sensor, which may preferably be torque-sensing bolt, generates an output proportional to torque generated by the brake during brake operation. The output of the sensor is compared to at least one reference value corresponding to a minimum acceptable level of torque. In the event the sensed torque is below the minimum, the escalator can be shut down to prevent restart until the failure condition is corrected.