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:
Feb. 13, 1979
Filed:
Mar. 15, 1977
Applicant:
Inventors:
Loren B Sheldon, Houston, TX (US);
James R Tomashek, Wood Dale, IL (US);
Donald H Ward, Glen Ellyn, IL (US);
Assignee:
BJ-Hughes Inc., Long Beach, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B / ; G06F / ;
U.S. Cl.
CPC ...
364567 ; 214-25 ; 340666 ;
Abstract
A computer-controlled oil drilling derrick is characterized by apparatus for determining the load supported by a traveling block during motion thereof from a first to second position within an oil drilling rig. The apparatus is operative to output a signal functionally related to the net load on the traveling block. Further, the apparatus outputs an appropriately scaled signal functionally related to the load on the traveling block when in a substantially static condition.