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公开(公告)号：US3908766A
公开(公告)日：1975-09-30
申请号：US44602074
申请日：1974-02-26
Applicant: BOSCH GMBH ROBERT
Inventor： HESS JOHANN
IPC: B25B21/02 , B25B23/145 , B25B19/00
CPC classification number: B25B23/1453
Abstract: Fluid operated impact wrench or similar power tool apparatus wherein a tool actuator particularly a rotary impactor is moved by fluid power to move a tool by mechanical impacts of the actuator, against a force resistive to the moving of the tool. In response to the mechanical impacts of the tool actuator, a series of fluid control impulses is generated. An arrangement is provided which is controlled by the force resistive to the moving of the tool, for controlling the fluid power by said series of fluid control impulses.
Abstract translation: 流体操作的冲击扳手或类似的动力工具装置，其中特别是旋转冲击器的工具致动器通过流体动力移动，以通过致动器的机械冲击来移动工具，抵抗抵抗工具移动的力。 响应于工具致动器的机械冲击，产生一系列流体控制脉冲。 提供了一种由抵抗工具移动的力控制的装置，用于通过所述一系列流体控制脉冲来控制流体动力。
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公开(公告)号：US3908768A
公开(公告)日：1975-09-30
申请号：US45048674
申请日：1974-03-12
Applicant: BOSCH GMBH ROBERT
Inventor： HESS JOHANN
CPC classification number: B25B21/02
Abstract: A rotary impact tool, especially an impact wrench, having a hammer located in a rotatable guide housing and connected to the latter for rotation therewith and axially reciprocatable with respect thereto between an active and an inactive position. An anvil is located forwardly of the hammer to be rotated by the latter in the active position thereof. The guide housing and therewith the hammer are rotated by drive means which include a central stator and a hollow cylindrical rotor connected with the guide housing for rotation.
Abstract translation: 旋转冲击工具，特别是冲击扳手，其具有位于可旋转引导壳体中的锤，并且连接到后者，用于与其相对转动并在活动位置和非活动位置之间相对于其枢轴向往复运动。 砧座位于锤的前方，由其在其活动位置中旋转。 引导壳体和锤子由驱动装置旋转，该驱动装置包括中心定子和与引导壳体连接以转动的中空圆柱形转子。
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公开(公告)号：US3924961A
公开(公告)日：1975-12-09
申请号：US53004774
申请日：1974-12-05
Applicant: BOSCH GMBH ROBERT
Inventor： HESS JOHANN , PAULE KURT , LATZINA KURT , WOLF RICHARD
CPC classification number: B25B21/02
Abstract: A pneumatic torqueing tool, particularly a pneumatic wrench, has a housing in which a pneumatic motor is mounted that is rotatable in two mutually opposite directions. A fluid conduit system is provided including a fluid passage which supplies pneumatic fluid to the motor when the same is to rotate in one of these directions. An adjustable throttle valve controls the flow of fluid through this passage and includes a valve member a portion of which is movable into and out of an orifice in the passage. A first arrangement mounts the valve member so that it can be gradually adjusted relative to the orifice whereby the portion of the valve member varies the effective cross section of the orifice. Another arrangement is provided for rapidly withdrawing the valve member with its portion entirely from the orifice in order to expose the maximum effective cross section thereof.
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