Patent · US Expired

Switching arrangement for returning a people-conveying device to a state of readiness

US5992604A · kind A · utility

5Cited by

1References

17Claims

0Family size

Assignee

O & K Rolltreppen GmbH & Co. KG · DE

Inventors

Hans-Werner Buescher · Unna, DE
Christian Maletzki · Waltrop, DE
Dirk Lange · Neubukow, DE
Andreas Tautz · Waltrop, DE

Key dates

Filing date	Aug 17, 1998
Grant date	Nov 30, 1999
Priority date	—
Expiry date	Aug 17, 2018

Classification

Technology area (CPC G)Physics
CPC primaryG01V8/20
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

A switching arrangement for returning a people-conveying device to a state of readiness comprises a plurality of light barriers which are formed by emitters and receivers and whose signals are fed to at least one electronic evaluation device, which automatically returns the people-conveying device to a state in which it is ready for use after an emergency off switch has been activated. The individual emitters and receivers are combined to form a light barrier chain and are disposed approximately opposite one another at predetermined spacings. Emitters and receivers are provided alternately on each side of the people-conveying device. The wiring between individual emitters and receivers on each side of the people-conveying device is brought about by plug-in connections without any connections to the emitters and receivers on the opposite side.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.