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1. 发明授权

US4349319A Pressure and flow compensated control system with constant torque and viscosity sensing over-ride 失效
标题翻译：压力和流量补偿控制系统，具有恒定的扭矩和粘度检测功能
公开(公告)号：US4349319A
公开(公告)日：1982-09-14
申请号：US171896
申请日：1980-07-24
申请人： J. Otto Byers, Jr. , Donald A. Locher
发明人： J. Otto Byers, Jr. , Donald A. Locher
IPC分类号： F15B21/04 , F04B49/00 , F04B49/08 , F04B1/28
CPC分类号： F04B49/007 , F04B49/08
摘要： A variable displacement fluid pump system is provided having a pressure and flow compensated control system with constant torque and viscosity sensing over-ride acting on the control system. The system includes a viscosity sensing means receiving fluid from the pump and acting on the control means to over-ride the control means to reduce the pump displacement when the viscosity of fluid in the pump exceeds a predetermined value, a pressure sensing means receiving fluid from the pump acting on the control means to over-ride the control means and reduce pump displacement when the pressure in the system exceeds a predetermined value, at least one pressure compensated work port valve receiving pressure fluid from said pump and a variable by-pass valve receiving fluid from the pump not required by the pressure compensated work port valves to variably by-pass excess fluid from said pressure compensated valve and acting on said control means to vary the displacement of said variable displacement pump to satisfy the fluid requirements of said pressure compensated valve above a minimum established flow rate.
摘要翻译：提供了一种具有压力和流量补偿控制系统的可变排量流体泵系统，其具有恒定的扭矩和粘度感测作用在控制系统上的过载。所述系统包括粘度检测装置，其接收来自所述泵的流体并作用在所述控制装置上以超越所述控制装置以在所述泵中的流体的粘度超过预定值时减小所述泵的位移;压力感测装置，所述泵作用在所述控制装置上以超越所述控制装置，并且当所述系统中的压力超过预定值时减小泵排量，至少一个压力补偿工作通道阀从所述泵接收压力流体和可变旁路阀从压力补偿的工作端口阀不需要的泵接收流体，以可变地绕过来自所述压力补偿阀的过剩流体并且作用在所述控制装置上以改变所述可变排量泵的位移以满足所述压力补偿的流体需求阀门高于最低建立流量。

2. 发明授权

US5264813A Force motor having temperature compensation characteristics 失效
标题翻译：强制电机具有温度补偿特性
公开(公告)号：US5264813A
公开(公告)日：1993-11-23
申请号：US17219
申请日：1993-02-12
申请人： J. Otto Byers, Jr.
发明人： J. Otto Byers, Jr.
IPC分类号： F15B13/043 , H01F7/122 , H01F7/16 , H02K33/12 , H01F41/00 , H01F7/00 , H01F7/08
CPC分类号： H01F7/1615 , H01F7/122
摘要： A force motor having a cylindrical armature of ferromagnetic material is provided. An electromagnetic coil is disposed coaxially around the armature. First and second cylindrical plates are disposed on opposite ends of the armature in spaced proximity from the armature forming a respective gap having a predetermined length. A substantially tubular permanent magnet is disposed coaxially around the armature. The magnet is magnetized radially with respect to the longitudinal axis and provides a pair of oppositely directed magnetic flux paths. A current source energizes the electromagnetic coil, which produces an electromagnetic flux path directed through the gaps and the armature to cause the armature to move. Advantageously, temperature compensators are provided to differentially expand and contract, with respect to the cylindrical plates, in response to a varying temperature of the force motor. The differential expansion of the temperature compensators urges the cylindrical plates toward one another to reduce the predetermined length of the gaps.

3. 发明授权

US5249603A Proportional electro-hydraulic pressure control device 失效
标题翻译：比例电液压力控制装置
公开(公告)号：US5249603A
公开(公告)日：1993-10-05
申请号：US885994
申请日：1992-05-19
申请人： J. Otto Byers, Jr.
发明人： J. Otto Byers, Jr.
IPC分类号： F15B13/04 , F15B13/044 , H01F7/122 , H01F7/16
CPC分类号： F15B13/0402 , F15B13/0442 , H01F7/1615 , F15B2013/0448 , H01F7/122 , Y10T137/86622
摘要： A proportional electrohydraulic pressure control device is disclosed. The device includes a linear motor having a permanent magnet. The magnet is radially magnetized providing first and second oppositely directed magnetic flux paths. A valve body is included which has a fluid supply port, first and second fluid control ports, and a central bore. The central bore defines first and second chambers at opposite ends of the bore. A linearly shiftable spool having first and second ends is disposed in the central bore. The first and second control ports define an annulus communicable with the central bore. A fluid source is communicable with the annulus of the control ports and supplies pressurized fluid to one of the first and second chambers. The fluid pressure in an associated chamber applies an axial force on a respective end of the spool. The spool is positional to a first neutral position causing a minimum fluid pressure at the first control port. Advantageously, the permanent magnetic flux forces are equal and opposite to the pressurized fluid force applied to the first end of the spool, thereby latching the spool at the first neutral position.
摘要翻译：公开了一种比例电液压控制装置。该装置包括具有永磁体的线性电动机。磁体被径向磁化，提供第一和第二相对定向的磁通路径。包括具有流体供给口，第一和第二流体控制口以及中心孔的阀体。中心孔在孔的相对端限定第一和第二腔。具有第一和第二端的线性可移动的卷轴设置在中心孔中。第一和第二控制端口限定与中心孔可通信的环形空间。流体源可与控制端口的环空连通，并将加压流体供应到第一和第二腔室中的一个。相关腔室中的流体压力在阀芯的相应端部施加轴向力。阀芯位于第一中性位置，导致第一控制口处的最小流体压力。有利地，永久磁通量与施加到阀芯的第一端的加压流体力相等并相反，从而将阀芯锁定在第一中性位置。

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