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. 16, 2004
Filed:
Jan. 08, 2002
Applicant:
Inventor:
John Donovan, Danvers, IL (US);
Assignee:
CH2M Hill Constructors, Inc., Englewood, CO (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F23M 7/00 ; F23M 5/00 ;
U.S. Cl.
CPC ...
F23M 7/00 ; F23M 5/00 ;
Abstract
A method and apparatus to hermetically seal openings in an explosion suppression chamber. The present invention utilizes an air lock device to ensure that, in the event toxins are released from the primary explosion chamber opening closing means, the toxins are properly handled and are not inadvertently released into the atmosphere. The preferred embodiment of the present invention uses negative pressure to vacuum the entrained air within the airlock cavity subsequent to an explosion. An alternate embodiment of the present invention uses positive pressure within the air lock cavity to force air through integral filter membranes.