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:
Aug. 30, 1994
Filed:
May. 29, 1992
Applicant:
Inventors:
Eric K Jamieson, Farmington, CT (US);
Richard C McCarthy, Simsbury, CT (US);
Young S Yoo, Avon, CT (US);
Assignee:
Otis Elevator Company, Farmington, CT (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B66B / ; G01G / ; G01G / ;
U.S. Cl.
CPC ...
187131 ; 187133 ; 177132 ;
Abstract
A single load cell 10 both (A) measures the load on a elevator hitch providing an analog elevator load signal on line 11 to an analog-to-digital converter 20 via line 18, for providing a digital elevator load signal and (B) is used for providing a dynamic tare of elevator load weighing system for calibrating the analog-to-digital converter 20 by adjusting an analog reference voltage (V.sub.ref) until the digital elevator load signal is equal to the dynamic tare.