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:
Jan. 21, 1992
Filed:
Nov. 22, 1989
Applicant:
Inventors:
Assignee:
Sandvik AB, Sandviken, SE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16K / ;
U.S. Cl.
CPC ...
251144 ; 251148 ; 2853321 ; 2853344 ;
Abstract
A coupling connects a valve structure to a container for enclosing pure gas under high pressure. The neck of the container and the valve structure include cooperating contact surfaces. One of the contact surfaces is convexly curved, or alternatively is of frusto-conical shape. The other of the contact surfaces is of convex spherical shape. A sealing ring is compressed between those contact surfaces. The inner surface of the container is polished to achieve a high degree of smoothness. The container is formed of a top part, and a bottom portion welded to an intermediate mantle.