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:
Jan. 31, 1995
Filed:
Jun. 29, 1993
Applicant:
Inventors:
Stanley V Stephenson, Duncan, OK (US);
Mark Farabee, Duncan, OK (US);
Max L Phillippi, Duncan, OK (US);
Ronald E Dant, Duncan, OK (US);
Russell D Taylor, Duncan, OK (US);
Assignee:
Halliburton Company, Duncan, OK (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G05B / ; B65G / ;
U.S. Cl.
CPC ...
364184 ; 198675 ; 222 63 ;
Abstract
A method of unsticking a material delivery apparatus comprises automatically generating and applying to the material delivery apparatus a cyclical drive signal that causes at least two levels of torque to be applied to the material delivery apparatus.