公开(公告)号：US5090295A

公开(公告)日：1992-02-25

申请号：US536274

申请日：1990-06-11

申请人： Sinclair Cunningham ,  Peter Wusthof

发明人： Sinclair Cunningham ,  Peter Wusthof

IPC分类号： F01B13/06 ,  F01B25/00 ,  F03C1/047 ,  F03C1/247 ,  F03C1/28 ,  F03C1/30 ,  F03C1/32 ,  F04B1/04

CPC分类号： F01B13/061 ,  F04B1/0435

摘要： The invention relates to a radial piston engine, particularly a radial piston motor comprising a cylinder block within which a plurality of pistons and rollers are reciprocally mounted for cooperation with a cam path provided by a cam disc. Detent means are used to releasably locate the cylinders and rollers in a position corresponding with the lower dead point position of the pistons.

摘要翻译： 本发明涉及一种径向活塞发动机，特别是一种径向活塞马达，其包括气缸体，多个活塞和滚子在该缸体内往复安装，以与由凸轮盘提供的凸轮路径配合。 止动装置用于将气缸和滚筒可释放地定位在与活塞的下死点位置相对应的位置。

公开(公告)号：US4510847A

公开(公告)日：1985-04-16

申请号：US347071

申请日：1982-02-08

申请人： Norbert Mucheyer ,  Wolfgang Kauss

发明人： Norbert Mucheyer ,  Wolfgang Kauss

IPC分类号： F15B9/08 ,  F15B11/08

CPC分类号： F15B9/08

摘要： A device for the positioning of an adjustment element dependent upon a desired level and the actual level, particularly for the adjustment of a hoist gear train of a tractor, a combine or the like, has an operating circuit 10, which has a multi-way valve 3 pressure-operated in two directions, and a control circuit 29 for the operation of the multi-way valve, connected to a pressure source 19, which is connected to two control devices 11, 12 of the multi-way valve. Circuit 29 has two adjustable series-connected throttles 22, 24, connected to one of the two control devices. The first throttle 24 is also connected to a tank 7 and the second throttle 22 is also connected to pressure source 19. Both throttles have the same maximum flow-through cross section, and are adjustable in the same manner. Third and fourth throttles 27, 28 are provided, one being between the pressure source and control device 11, and the other between the control device and tank 7. The third and fourth throttles 27, 28 are each adjustable throttles, so that both control devices of the multi-way valve can be influenced as desired. The throttles are mounted in series and have the same flow-through cross section and are adjustable in the same manner. The maximum flow-through cross section of the third and fourth throttles is selected in the same manner as the flow-through cross section of the first and second throttles.

摘要翻译： 用于根据期望水平和实际水平定位调节元件的装置，特别是用于调整拖拉机，组合机构等的起重机齿轮系，具有操作电路10，其具有多路 在两个方向上压力操作的阀3和连接到多通阀的两个控制装置11,12的压力源19连接的用于操作多通阀的控制回路29。 电路29具有连接到两个控制装置之一的两个可调节的串联连接的节流阀22,24。 第一节流阀24也连接到罐7，第二节流阀22也连接到压力源19.两个节流阀具有相同的最大流通截面，并且可以以相同的方式调节。 设置有第三和第四节气门27,28，一个位于压力源和控制装置11之间，另一个位于控制装置和罐7之间。第三和第四节流阀27,28分别是可调节的节流阀，使得两个控制装置 的多通阀可以根据需要进行影响。 节流器串联安装并具有相同的流通横截面并且可以以相同的方式调节。 以与第一和第二节流件的流通横截面相同的方式选择第三和第四节流阀的最大流通横截面。

公开(公告)号：US4943212A

公开(公告)日：1990-07-24

申请号：US275438

申请日：1988-11-23

申请人： Hubert Bernd ,  Pierre Heiby ,  Alfred Sitter

发明人： Hubert Bernd ,  Pierre Heiby ,  Alfred Sitter

IPC分类号： F04B49/02

CPC分类号： F04B49/02

摘要： Connected to a pressure conduit are a plurality of fixed displacement pumps and a variable displacement pump which are connectable and disconnectable in accordance with the amount of fluid withdrawn. The maximum delivery rate of the variable displacement is greater than the delivery rate of each fixed displacement pump. For the minimum and maximum delivery rate of the variable displacement pump two switching points are defined at each of which a fixed displacement pump is connected or disconnected. This gives a reliable fluid supply of the pressure conduit without any danger of erroneous switchings.

摘要翻译： 连接到压力导管的是多个固定排量泵和可变排量泵，其可根据流体排出的量连接和断开。 可变排量的最大输送速率大于每个固定排量泵的输送速率。 对于可变排量泵的最小和最大输送速率，在每个切换点定义固定排量泵连接或断开的位置。 这为压力管道提供了可靠的流体供应，没有任何错误切换的危险。

公开(公告)号：US4938252A

公开(公告)日：1990-07-03

申请号：US353009

申请日：1989-05-17

申请人： Martin Piechnick

发明人： Martin Piechnick

IPC分类号： F16K31/02 ,  F16K31/06 ,  G05D16/20

CPC分类号： G05D16/2013 ,  Y10T137/7759 ,  Y10T137/7761

摘要： The invention relates to an electrically activated two-way throttle valve. The opening stroke of the valve piston is determined by an electrical desired value. To control the valve a circuit is provided to obtain a predetermined flow relation in response to the valve member position. According to the invention the pressure difference prevailing at the valve is measured. The pressure differential signal is exponentiated with an exponent. The product of this exponential function and of an input signal defines the desired value for the valve member position. By selecting different values for the exponent, the volume of flow in response to the valve member position is adjusted to an optimum and still further a variety of valve functions may be obtained to operate the valve as flow controlled or pressure controlled for example.

摘要翻译： 本发明涉及电动双向节流阀。 阀活塞的打开行程由电需求值确定。 为了控制阀，提供电路以响应于阀构件位置获得预定的流动关系。 根据本发明，测量阀门处的压差。 压差信号用指数取幂。 该指数函数和输入信号的乘积定义了阀构件位置的期望值。 通过选择指数的不同值，响应于阀构件位置的流量被调节到最佳值，并且还可以获得各种阀功能，以便例如以流量控制或压力控制的方式操作阀。

公开(公告)号：US4488574A

公开(公告)日：1984-12-18

申请号：US405101

申请日：1982-08-04

申请人： Reiner Bartholomaus

发明人： Reiner Bartholomaus

IPC分类号： F16K31/06 ,  G05D16/20

CPC分类号： G05D16/2013 ,  Y10T137/7761 ,  Y10T137/86622 ,  Y10T137/86702

摘要： A pressure control valve arrangement includes a control slide valve body which is slidably accommodated in a central bore of a valve housing. The control slide valve body is acted upon at one of its axial sides by the controlled pressure, and at its other axial side by a tappet of a proportional electromagnet. The proportional magnet has a magnet housing which is rigidly connected to the valve housing. To provide a pressure control valve arrangement in which the accuracy of the pressure control is not influenced by disturbing factors, a pressure indicator is accommodated in the magnet housing; at least the pressure-responsive member of the pressure indicator is acted upon by the controlled pressure, which is supplied thereto through a connecting bore in the magnet housing and a part of the central bore of the valve housing in which the controlled pressure prevails. A connecting line of the pressure indicator is lead to the exterior of the magnet and valve housings for derivation of the measured value therefrom. The measured value may then be compared with a reference value, and the result of the comparison may be used for controlling the coil of the proportional magnet, possibly after amplification.

摘要翻译： 压力控制阀装置包括可滑动地容纳在阀壳体的中心孔中的控制滑阀体。 控制滑阀体通过控制压力作用在其一个轴向侧，并且在其另一个轴向侧由比例电磁体的挺杆作用。 比例磁体具有刚性地连接到阀壳体的磁体壳体。 为了提供一种压力控制阀装置，其中压力控制的精度不受干扰因素的影响，压力指示器容纳在磁体壳体中; 至少压力指示器的压力响应构件受到受控的压力的作用，该受控压力通过磁体壳体中的连接孔和阀壳体的中心孔的一部分被供应到压力控制压力，其中受控压力占优势。 压力指示器的连接线通向磁体和阀壳体的外部，用于从其导出测量值。 然后将测量值与参考值进行比较，并且比较结果可用于控制比例磁体的线圈，可能在放大后。