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:
Apr. 09, 1985
Filed:
Nov. 01, 1982
James M Walker, Houston, TX (US);
Dril-Quip Inc., Houston, TX (US);
Abstract
A weld-on female casing connector is disclosed having an upper threaded section and a lower cylindrical section that is welded to the casing. Located between the two sections is a connecting section that has a downwardly decreasing cross-sectional area until the cross-sectional area approaches the cross-sectional area of an ideal transition section and has a stress in the range of other high stress sections of the connector than an increasing cross-sectional area until the outside diameter of the connecting section is sufficient to provide a downwardly facing elevator shoulder of sufficient area to support the casing on an elevator.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile