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1. 发明授权

US4854916A Hydraulic torque impulse generator with bypass mechanism 失效
标题翻译：具有旁路机构的液压扭矩脉冲发生器
公开(公告)号：US4854916A
公开(公告)日：1989-08-08
申请号：US236322
申请日：1988-08-24
申请人： Knut C. Schoeps , Sven P. J. Westerberg
发明人： Knut C. Schoeps , Sven P. J. Westerberg
IPC分类号： B25B21/02 , B25D15/00 , F16D31/06
CPC分类号： B25B21/02
摘要： A hydraulic torque impulse generator comprising a rotationally driven drive member (10; 50), a hydraulic fluid chamber (16; 51) confined in the drive member (10; 50), an output spindle (18; 53) having a rear impulse receiving portion (17; 52) extending into the fluid chamber (16; 51), at least two radially slidable vanes (23, 24; 58, 60) carried by the rear spindle portion (17; 52) and cooperating with corresponding seal portions (25, 26; 62, 63, 64) on the fluid chamber wall, axially extending seal ribs (29, 30; 65, 66, 67) on the fluid chamber wall and corresponding axially extending seal ribs (27, 28; 68, 70) on the rear spindle portion (17; 52). Simultaneous sealing cooperation is obtained more than once during each revolution of the drive member (10; 50) relative to the output spindle (18; 52), whereby the fluid chamber (16; 51) is momentarily divided into at least two high pressure compartments (H.P.) and at least two low pressure compartments (L.P.). A first passage mechanism (32-35; 74-78 ) in the drive member (10; 50) cooperates with a second passage mechanism (37, 38; 73) in the output spindle (18;53) to form bypass passages between the high pressure compartments (H.P.) and the low pressure compartments (L.P.) in all but one of the fluid chamber dividing positions, such that only one torque impulse per relative revolution between the drive member (10; 50) and the output spindle (18; 53) is generated.

2. 发明授权

US5022469A Exhaust means for pneumatic power tool 失效
标题翻译：排气装置用于气动电动工具
公开(公告)号：US5022469A
公开(公告)日：1991-06-11
申请号：US461403
申请日：1990-01-05
申请人： Sven P. J. Westerberg
发明人： Sven P. J. Westerberg
IPC分类号： B23Q11/00 , B25F5/02 , F01N13/00
CPC分类号： F01N13/001 , B23Q11/0078 , B23Q11/0096 , B25F5/02 , Y10S173/02
摘要： A sound depressing exhaust means for a pneumatic power tool with a substantially cylindrical housing (10) and a vane motor (11) with exhaust port means (23), has an annular casing (41) surrounding a portion of the housing (10), and four expansion chambers (31-32, 34, 36, 39) arranged in series and combined with four flow restrictions (33, 37, 30, 35) and a sound trap (38). All of the expansion chambers are annular and located concentrically relative to the tool housing (10), and one of the flow restrictions has an annular screen (37) separating two of these chambers (34, 36). The last two of the expansion chambers (36, 39) in the exhaust flow direction contain high frequency absorbing elements (43, 44) of foamed plastic.
摘要翻译：一种用于具有基本上圆柱形壳体（10）的气动动力工具和具有排气口装置（23）的叶片马达（11）的降噪排气装置，具有围绕壳体（10）的一部分的环形壳体（41）以及四个膨胀室（31-32,34,36,39），它们与四个流量限制（33,37,30,35）和一个隔音器（38）串联布置。所有膨胀室都是环形的并且相对于工具壳体（10）同心地定位，并且一个流动限制件具有分隔这些腔室（34,36）中的两个的环形筛网（37）。在排气流动方向上的最后两个膨胀室（36,39）包含发泡塑料的高频吸收元件（43,44）。

3. 发明授权

US4257489A Pressure fluid powered machine tool 失效
标题翻译：压力流体动力机床
公开(公告)号：US4257489A
公开(公告)日：1981-03-24
申请号：US967219
申请日：1978-12-07
申请人： Sven P. J. Westerberg
发明人： Sven P. J. Westerberg
IPC分类号： B23B39/00 , B23B47/08 , B23B47/22 , B23Q1/00 , B23Q5/06 , B23Q5/26 , B23Q5/00 , E21C
CPC分类号： B23Q1/0018 , B23Q1/0027 , B23Q5/06 , B23Q5/263
摘要： A pressure fluid powered machine tool comprising a rotary motor unit displaceably guided in a cylinder bore of a housing to accomplish a combined rotary and linear movement of a working tool such as a drilling or tapping tool. The motor unit is provided with an external pressure fluid supply tube which is rigidly connected to the motor unit in a parallel offset position and which cooperates with a pressure chamber in the housing to establish a controlled fluid communication between the housing and the motor unit. The feed tube also serves as a torque reaction support bar by means of which the torque reaction arising in the motor unit is transferred to the housing.
摘要翻译：一种压力流体动力机床，包括在壳体的气缸孔中可移动地引导的旋转马达单元，以实现诸如钻孔或攻丝工具的加工工具的组合的旋转和线性移动。马达单元设置有外部压力流体供应管，该外部压力流体供应管在平行偏移位置刚性地连接到马达单元，并且与壳体中的压力室配合以在壳体和马达单元之间建立受控的流体连通。进料管还用作扭矩反作用支撑杆，借助于该扭矩反作用力将马达单元中产生的扭矩反作用于壳体。

4. 外观设计

USD325502S Power screw driver 失效
公开(公告)号：USD325502S
公开(公告)日：1992-04-21
申请号：US337116
申请日：1989-04-12
申请人： Erik R. Rahm , Sven P. J. Westerberg
设计人： Erik R. Rahm , Sven P. J. Westerberg

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