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. 01, 2008
Filed:
Oct. 14, 2005
Applicant:
Robert W. Evans, Portland, OR (US);
Inventor:
Robert W. Evans, Portland, OR (US);
Assignee:
Evans Components, Inc., Portland, OR (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16K 1/14 (2006.01); G01N 1/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A portable receptacle is vacuumized for use in taking an air or gas sample for subsequent examination to determine type, origin, components of the air or gas. Critical to a long shelf life of the vacuumized receptacle is a valve which virtually seals the receptacle for months or years permitting storage of the receptacle in a state ready for immediate use at a site. The valve utilizes a positionable member plated with a noble metal. A filter serves to collect particulate from the air or gas flow into the receptacle. A funnel shaped collector aids in the collection.