Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Patent Inventor Names
C. Dean McGowan0
Seth W. Mackay-Smith0
Date of Patent
July 21, 2009
Patent Application Number
11411090
Date Filed
April 26, 2006
Patent Primary Examiner
Patent abstract
An excess flow valve (EFV) for installation in a service line of natural gas distribution system serving an existing structure. The EFV has a cylindrical housing having a first length and a second length and a through hole therethrough for passage of gas. The EFV 11 engaged in the through hole of the first length and the second length has an expandable wall which can be expanded and fixed in said service line.
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