H - Electricity – 05 – B
Patent
H - Electricity
05
B
309/4
H05B 3/06 (2006.01) H05B 3/80 (2006.01)
Patent
CA 1087668
ABSTRACT OF THE DISCLOSURE METHOD AND APPARATUS FOR FREEING A RAILROAD TANK CAR BOTTOM UNLOADING VALVE MADE INOPERABLE BY SOLIDIFIED FLUIDS WITHIN IT A portable apparatus for inserting into a bottom unloading valve of a railroad tank car which has been locked in an opened or partially opened position due to liquids solidifying therein. The apparatus is a portable electrical heating unit removably insertable into the valve so as to be in a heat-transmitting relationship within the fluid passage of the valve. The apparatus has a removable flange adaptor which is connected to the heating unit and securable directly to the bottom unloading valve or a fitting connected to the valve. A control means for regulating the heat output of the heating unit is electrically connected to the heating unit. A drain may be provided to allow the liquefied fluid to escape from the valve's fluid passage. The method for using the apparatus comprises inserting the portable electrical heating unit into the fluid passage of the bottom unloading valve and removably connecting it into a heat-transmitting relationship within the fluid passage of the valve and then controlling the output of the portable heating unit to liquefy the solidified fluid so as to make the valve manually operable.
269448
Chevron Research And Technology Company
Sim & Mcburney
LandOfFree
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