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:
Feb. 12, 1991
Filed:
Dec. 15, 1989
Applicant:
Inventor:
Paolo della Porta, Milan, IT;
Assignee:
SAES Getters SpA, Milan, IT;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16K / ; F16K / ; F16K / ;
U.S. Cl.
CPC ...
137240 ; 251330 ; 2513353 ;
Abstract
The invention relates to a high purity gas delivery control assembly (100) having straight through gas flow. The bellows (118) which operates a gas flow interruption means (114) is isolated during gas flow and dead volumes are reduced to a minimum. This prevents the introduction of unwanted particles into the gas stream.