Supports: cabinet structure – Barrier opening with flexible seal for operator
Patent
1981-05-18
1984-03-20
Sakran, Victor N.
Supports: cabinet structure
Barrier opening with flexible seal for operator
312 31, 312 311, 312 312, 312 313, 228193, 219 74, B23K 2000, B23K 3538, A62B 1500
Patent
active
044377100
ABSTRACT:
An inflatable, inert-gas purged welding chamber assembly ideally suited for use in welding workpieces made of a metal (e.g., titanium), or of an alloy, which is susceptible to atmospheric contamination during welding. The welding chamber of the assembly is defined by a collapsible, reusable, inflatable member (e.g., a polyethylene bag) that is releasably connected to a closeable opening in a wall member. The inflatable member, while in a collapsed condition and while containing the workpieces to be welded and the accessories therefor (e.g., a welding torch, extra tungsten electrodes, and filler wires) on a shelf protruding from the wall member, is purged of air (i.e., the ambient atmosphere) by the use of an inert gas (e.g., argon), thereby inflating the collapsed member and creating an inert gas environment in which the air-contaminable workpieces can be welded without fear of contamination. The enormous time consumed, the inert gas wasted, and the high cost of the rigid welding chambers, and of the shielding fixtures, that necessarily were used in the prior art to accomplish welding in an inert gas environment are eliminated by the use of this collapsible, reusable, inexpensive, and inflatable welding chamber.
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Kappe Bernard W.
MacFarland James M.
Lamattina Frank J.
Sakran Victor N.
Singer Donald J.
The United States of America as represented by the Secretary of
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