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. 05, 1992
Filed:
Apr. 11, 1991
Applicant:
Inventor:
Bashir M Koleilat, Spring, TX (US);
Assignee:
Other;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
E21B / ;
U.S. Cl.
CPC ...
166117 ; 166242 ; 166382 ; 285 45 ;
Abstract
The invention relates to apparatus for protecting wellhead bores during drilling operations, and more particularly to bowl protectors for preventing damage to wellhead bore seal surfaces as drilling equipment passes through the wellhead. The invention includes a bowl protector and a seperable false bowl for accepting a casing hanger, the bowl protector and false bowl being releasably connected together by shear pins.