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:
Mar. 01, 1977
Filed:
Feb. 07, 1975
Applicant:
Inventor:
Tsuyoshi Satoh, Inazawa, JA;
Assignee:
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JA;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B66B / ;
U.S. Cl.
CPC ...
187 / ;
Abstract
A pulse generator supplies to a logic unit, pulses the number of which is determined by the amount of movement of an elevator car. The logic unit effects the algorithm and comparison of the amount of movement of the car and a command amount of movement of the car to produce a speed signal which, in turn, controls the car. The pulses are also stored in a memory and an electric source energizes the memory and the pulse generator for a predetermined time after the occurrence of an emergency.