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. 13, 1980
Filed:
Apr. 04, 1979
Applicant:
Inventors:
Loren B Sheldon, Houston, TX (US);
James R Tomashek, Wood Dale, IL (US);
Donald H Ward, Glen Ellyn, IL (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B25B / ;
U.S. Cl.
CPC ...
81 5735 ; 173164 ; 175 85 ; 364104 ; 81 5734 ;
Abstract
Apparatus for controlling a tongs arrangement which includes a tongs lift and lift speed arrangement, a backup tong and a power driven tong, is characterized by means for generating electrical signals to lift the backup tong and power tong at a predetermined speed to a predetermined elevation, means for generating an electrical signal to close and lock the backup tong when lifted, and means for generating an electrical signal to drive the power driven tong when the backup tong is closed and locked.