| 摘要 |
1,261,351. Agitating by ultrasonic vibrations. JOSEPH LUCAS (INDUSTRIES) Ltd. 8 April, 1969 [25 April, 1968], No. 19591/68. Addition to 1,213,471. Heading B1C. [Also in Divisions H1 and H4] In the apparatus disclosed in Parent Specification for pasting lead-acid battery plates, the sonotrode of the ultrasonic tool comprises a metal block 11 having a pair of closed ended slots 13 extending parallel to the direction of vibration. |
