| 摘要 |
<p>785,342. Filters; filtering media. GENERAL MOTORS CORPORATION. June 21, 1955 [July 19, 1954], No. 17892/55. Class 46. [Also in Group V] A stack of resin-impregnated fibrous discs 150 are moulded (see Group V) to form a filter. Each disc has a central passage 182, for conducting away filtered fluid, and radial passages 180 which terminate short of the passage 182. A wire bail 174 is held in grooves 170. The end discs 184 are moulded to such a shape as to provide smooth end surfaces.</p> |
