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. 16, 2000
Filed:
Jan. 19, 1999
Applicant:
Inventors:
George John Palyo, III, Houston, TX (US);
William Boyd Sargent, Birmingham, AL (US);
Assignee:
USX Corporation, Pittsburgh, PA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B23G / ;
U.S. Cl.
CPC ...
408 / ; 408217 ; 408221 ; 470185 ;
Abstract
A method is provided for machining threads on cylindrical parts, particularly oil country tubular goods, by mounting four thread-cutting chasers in a die head of a thread cutting machine. The thread chasers are each of unique profile, which enables the cutting of threads to close tolerance and decreases metal burrs on the first and last threads cut on the part by reducing the total tool cutting forces imposed on the part and said threading machine.