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:
Nov. 01, 1988
Filed:
Feb. 05, 1988
Applicant:
Inventors:
Jean Arnoult, Saint-Nazaire-les-Eymes, FR;
Gerard Loiseau, Bois d'Arcy, FR;
Maurice Molozay, Le Mesnil-Saint-Denis, FR;
Assignee:
L'Air Liquide, Paris, FR;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16K / ;
U.S. Cl.
CPC ...
13761419 ; 251205 ; 2513353 ;
Abstract
In a gas flow regulating valve, the needle (37) axially shifted by a rod (40) includes a recess (70) which is of variable depth and cooperates with an expanding sealing element (43). The valve is provided with a safety closure means comprising a valve member (33) which has a spring (35) and whose displacements are controlled by a free connection tube (30).