| 摘要 |
577,081. R÷ntgenray apparatus. GOLDFIELD, E. R., and GRAVES, E. B. Feb. 17, 1944, No. 2983. [Class 98 (i)] [Also in Group XL] An X-ray tube is immersed in liquid in a casing of heat-conducting material over the surface of which air is passed by a fan in an outer housing, the casing having a removable cover accessible after removal of a cover of the outer housing, both covers being spaced from each other and forming portions of the walls of the air current path. In the form shown, two fans 31 blow external air upwards between the inner casing 10 containing the X-ray tube 13 and transformer 14 and the left-hand side of the housing 19, between the two covers 11, 22 and downwards over the right-hand side of casing 10. A motor-driven impeller 15 circulates the oil in the casing 10 which has bellows 17, 18 to permit expansion of the oil.
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