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:
Dec. 31, 2013
Filed:
Jul. 31, 2012
Michael Hacikyan, Amherst, NY (US);
Michael Hacikyan, Amherst, NY (US);
Other;
Abstract
A water-degradable purge dam apparatus for purging a weld zone of a pipe assembly comprising first and second pipes having respective first and second ends. A first purge dam subassembly adapted for installation in the first pipe end has a hollow first conduit defining a first air flow pathway. A second purge dam subassembly adapted for installation in the second pipe end has a hollow second conduit defining a second air flow pathway. Each subassembly has one or more air flow blocking plates. A hollow third conduit, defining a third air flow pathway, is interconnectable to the first and second conduits members to span the weld zone. The first, second and third air flow pathways allow pressurized air within the pipes to pass through the purge dam apparatus and the weld zone in a sequestered by-pass zone defined by the first, second and third conduits.