| 摘要 |
1,262,034. Percussive tools. LOSENHAUSEN MASCHINENBAU A.G. 26 Oct., 1970 [30 Oct., 1969], No. 50766/70. Addition to 1,231,233. Heading B4C. A motor-driven implement (Fig. 1) with a vibratory tool e.g. a tamping tool 13 is identical with the implement described in parent Specification excepting that guide rollers 11 replace guide bushes of that prior Specification, and that there are only three rods 8 (Fig. 2, not shown) as opposed to four in the prior Specification. In the modified embodiment of Fig. 3 housing 10 is divided by a partition 19 into two chambers and only the upper chamber 20 contains lubricating oil. As no oil is contained within housing 12 the bellows 17 of Fig. 1 is ; replaced by a cylindrical cover 18. |
