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:
Mar. 11, 1997
Filed:
Nov. 17, 1994
Applicant:
Inventor:
Rick A Lawson, Houston, TX (US);
Assignee:
Fugitive Emissions Detection Devices, Inc., Spring, TX (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01N / ; G01M / ; G01M / ;
U.S. Cl.
CPC ...
73 46 ; 73 40 ; 340605 ;
Abstract
A monitoring device and system for detecting fugitive emissions including emissions from valves and bolted flange connections. The monitoring device includes (1) an enclosure with gaskets to seal the air space around the valve or between the members of the flange, and (2) an indicating cartridge installed contains material which will register a change if emissions leak into the enclosed air space.