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:
May. 17, 1994
Filed:
Jul. 11, 1991
Jean Youla, Brooklyn, NY (US);
Monique M LaRose, Berlin, MA (US);
William P Reid, Windsor, CT (US);
Burton Greenfield, Avon, CT (US);
Otis Elevator Company, Farmington, CT (US);
Abstract
An electronic stepper for indicating floor position has initialization switches set by a serviceman for indicating a reference floor position. Whenever the car goes by the reference position in the hoistway, the corresponding reference floor is output. The electronic stepper may be mounted on a printed circuit board having a floor display for use by the serviceman. Various toggle switches may be provided for use by the serviceman in setting up and checking operation. Power checking means may be provided for initiating nonvolatile storage of the current floor position in the event of a brown-out or other power failure. Watchdog circuitry may be provided for checking on the health of the signal processor and a circuit for watching the watchdog may also be provided. A timed window signal may also be provided for indicating the end of the time at which a stopping sequence must be initiated in order to be able to stop at the approaching floor.