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:
Oct. 25, 1983
Filed:
Nov. 03, 1980
Douglas W Nayler, Kingwood, TX (US);
John D Smith, Houston, TX (US);
NL Industries, Inc., New York, NY (US);
Abstract
The invention pertains to apparatus for connecting to a wellhead structure. Lower and upper female bodies define first and second receptacles disposed generally in coaxially aligned, end-to-end, communicative relation. A male body is received in both receptacles. The male body and upper female body have respective sets of inductive electric couplers matched in one-to-one relation. Several features facilitate effective use of such couplers: the couplers themselves have the edges of their heads chamfered from a point located just outwardly of the O.D's of their cores; an improved mounting arrangement aligns the two female bodies in stacked relation without the lower female body interfering with proper seating of the male body in the upper female body; an improved compensator system enhances play of one female body for precise centering with the other.