Patent ID: 7312416
Filing Date: 2007-12-25
Classification: B23K

Abstract:
1. An underwater welding apparatus comprising: a first housing defining a first chamber having a first opening and a welding opening, said welding opening having a first margin for surrounding and sealing about an underwater welding site; a second housing defining a second closed chamber having a second opening; a closure member caused by said second housing selectively moveable between positions closing and opening said second opening; said first and second housings being engageable with one another with said first and second openings in registration with one another; a welding unit carried by said second housing within said closed chamber and moveable through said registering openings from said second chamber into a welding position in said first chamber when said housings engage one another and said closure member is moved to said open position; and a jig attachable to a structure to be welded for mounting said first housing at said welding site.