公开(公告)号：US3828865A

公开(公告)日：1974-08-13

申请号：US6488970

申请日：1970-07-29

Applicant: METABOWERKE KG

Inventor： SCHNIZLER A

IPC: B25D16/00 ,  B25D11/00

CPC classification number: B25D16/006 ,  B25D2211/003 ,  B25D2250/201

Abstract: A percussion or hammer drill with a gear unit which is preferably driven by an electric motor and permits the ratio between the speed of rotation of the drilling tool and the frequency of the impacts of the striker upon this tool to be varied.

公开(公告)号：US3817115A

公开(公告)日：1974-06-18

申请号：US30879172

申请日：1972-11-22

Applicant: METABOWERKE KG

Inventor： SCHNIZLER A ,  KIESER H

IPC: F16H1/14 ,  F16H57/027 ,  F16H57/04

CPC classification number: F16H57/0493 ,  F16H1/14 ,  F16H57/027 ,  Y10T74/19665

Abstract: An electrically powered portable angle sander wherein a portion of the interior of the transmission housing is filled with oil and the housing has an aerating opening which is located above the surface of oil in all angular positions of the housing. The aerating opening communicates with the interior of the housing by way of a labyrinth seal which surrounds the input shaft or the output shaft of the transmission. The aerating opening prevents the pressure of oil from rising at elevated temperatures to thus reduce the likelihood of leakage of oil between the sections of the housing and/or along that shaft which is not surrounded by the labyrinth seal.

Abstract translation: 一种电动便携式角式打磨机，其中变速器壳体的内部的一部分被油填充，并且壳体具有在壳体的所有角度位置中位于油表面上方的充气开口。 充气开口通过围绕输送轴或变速器的输出轴的迷宫式密封件与壳体的内部连通。 充气开口防止油在高温下升高，从而降低在壳体部分和/或沿不被迷宫式密封件包围的轴之间泄漏油的可能性。