F - Mech Eng,Light,Heat,Weapons – 16 – K
Patent
F - Mech Eng,Light,Heat,Weapons
16
K
137/44
F16K 1/00 (2006.01) B23K 9/32 (2006.01)
Patent
CA 1176134
APPARATUS AND METHOD FOR REDUCING THE WASTE OF WELDING GAS Abstract of the Disclosure An apparatus and method is described for reducing the amount of gas consumed during welding operations. A source of relatively high pressure inert gas is supplied to an individual welding sta- tion. At the station is a pressure regulator for substantially reducing the gas pressure and having an inlet in communication with the higher pressure gas supply and an outlet in communication with the inlet of a surge tank. The outlet of the surge tank is in communication with the welding apparatus. A flow restriction is located between the regulator and surge tank to increase the pressure drop across the surge tank during the transient period. The volume of the surge tank is sufficient, and the apparatus functions, to supply a flow of gas, to the welding apparatus at the reduced pressure during transient when the welding apparatus is turned on, greater than that supplied during steady state conditions. In one embodiment, the apparatus of the invention includes a pressure gauge, pressure regu- lator, and surge tank within a sealed housing with the face of the pressure gauge positioned at one side thereof and visible externally of the housing. Access to the regulator for adjustment thereof is limited by means of a locked cover which, when opened, allows adjustment of the regulator through an opening with a suitable tool.
373120
Eaton William C.
Stauffer Howard V.
National-Standard Company
Osler Hoskin & Harcourt Llp
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