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:
Nov. 23, 1993
Filed:
Aug. 28, 1992
Applicant:
Inventors:
James T Stewart, Spring, TX (US);
David C Toalson, Bellville, TX (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B66C / ;
U.S. Cl.
CPC ...
212154 ;
Abstract
A crane load detection system is provided having an electronic strain gage located in series with the deadline of the boom and located adjacent the gantry tie-down of the deadline of the boom. A pendulum potentiometer and transmitter are provided on the boom adjacent its pivot point. A microprocessor is employed to solve several triangles using trigonometric functions to calculate the radius of rotation, the actual weight of the load and the percent of the load as compared to the maximum load for which the crane is designed.