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. 06, 1997
Filed:
Sep. 22, 1995
Applicant:
Inventor:
Christopher P Hutchinson, Houston, TX (US);
Assignee:
Weatherford U.S., Inc., Houston, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B / ;
U.S. Cl.
CPC ...
166 556 ; 175426 ; 407116 ;
Abstract
A cutting insert for wellbore milling operations is disclosed which, in certain embodiments, has two or more top milling surfaces on an insert body with the surfaces at different heights above a bottom of the insert body. In certain embodiments three top surfaces are used stair-stepped, with a central lower surface, or with a central higher surface. In one aspect all cutting surfaces have an array of chipbreaking indentations. Tools and methods are disclosed which use such inserts.
Hutchinson, Christopher. (1997). Wellbore milling tools and inserts (U.S. Patent No. 5626189). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5626189
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile