| 摘要 |
<p>620,506. Filters. MEISTER, U. Aug. 20, 1946, No. 24818. Convention date, Oct. 6, 1942. [Class 46] [Also in Group XXIX] A filter 7 enclosed in the handle 1 of a sprayer has at its lower end a frusto conical bottom piece 8, resting in a like shaped cup 2" formed in the filter chamber, the piece 8 having helical grooves 9 or fins through which the liquid enters from 3. The bottom piece may be separate from the filter. The grooves or fins may be formed in the cup 2<SP>11</SP> instead of in the piece 8.</p> |
