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1. 发明授权

US4588539A Process and press with a controlled pressure system 失效
标题翻译：用受控压力系统进行加工和压制
公开(公告)号：US4588539A
公开(公告)日：1986-05-13
申请号：US697888
申请日：1985-02-04
申请人： Alfred F. Rossi , Albert D. Johns , Walter Malakhow , George W. Michalec
发明人： Alfred F. Rossi , Albert D. Johns , Walter Malakhow , George W. Michalec
IPC分类号： B30B15/18 , B30B1/26 , B30B1/32 , B31B50/59 , B31F1/00 , B31B43/00
CPC分类号： B31B43/00 , B30B1/261 , B30B1/32 , B31F1/0077 , B31B2201/223
摘要： A press for forming sheet material into a shaped article comprising a frame, first and second complementary dies, a cam supported by the frame for reciprocally moving the first die along an axis between a first position axially spaced from the second die and a second position fully mated with the second die, the cam including a dwell period when the first die is in the second position. The press includes a bolster supporting the second die for axial movement between upper and lower limits, the bolster being axially spaced from the upper limit by movement of the first die to the second position. The press also includes a hydraulic power circuit responsive to the position of the cam for normally biasing the bolster toward its upper limit under a first hydraulic pressure and for biasing the bolster toward the upper limit under a second hydraulic pressure during the dwell period, the second hydraulic pressure being greater than the first hydraulic pressure.
摘要翻译：一种用于将片材形成成型制品的压制件，包括框架，第一和第二互补模具，由框架支撑的凸轮，用于沿第一位置与第二模具轴向间隔开的第一位置沿着轴线往复移动第一模具，与第二模具配合，凸轮包括当第一模具处于第二位置时的停留时段。压机包括支撑第二模具以在上限和下限之间进行轴向移动的垫块，该垫片通过第一模具的移动与第二模具的位置轴向间隔开。压力机还包括响应于凸轮的位置的液压动力回路，用于在第一液压下朝向其上限正常地偏压凸轮，并且在停留时段期间在第二液压下朝向上限偏压气垫，第二液压压力大于第一液压压力。

2. 发明授权

US5348453A Positive displacement screw pump having pressure feedback control 失效
标题翻译：具有压力反馈控制的正排量螺杆泵
公开(公告)号：US5348453A
公开(公告)日：1994-09-20
申请号：US8871
申请日：1993-01-25
申请人： Mark E. Baran , David P. Phibbs , Vern W. Couch , George W. Michalec
发明人： Mark E. Baran , David P. Phibbs , Vern W. Couch , George W. Michalec
IPC分类号： F04C2/08 , F04C2/16 , F04C14/28 , F04C15/00 , F04B21/02 , F04C15/04
CPC分类号： F04C14/28 , B29C47/0845 , F04C15/0042 , F04C15/0049 , F04C2/084 , F04C2/16 , B29C47/0009
摘要： Improvements in screw pumps, and especially positive displacement pumps, are disclosed. The clearance between the screw flight and the bore is increased over an increased period. The screw is balanced at preferred locations on the flight. Wear hard material such as tungsten carbide is emplaced on a portion of the outer surface of the screw flight. A wear measurement port extends from the outside surface of the pump to the inner surface of the bore. Pressure regulating ports and controls provide an active pressure feedback control system to control the feeding of pressure from the outlet end of the screw back toward the inlet end of the screw. Pump wear, and pressure pulsations in the operation of the pump are thus reduced. The wear measurement port enables a method of monitoring wear on the pump screw during operation without disassembling the pump, namely by manipulating a wear measurement device through the port. The wear measurement device can be a proximity sensor which can be connected to a monitor. The wear measurement port can be sealed with the proximity sensor in place in the port, such that wear of the screw can be monitored while the pump is operating.
摘要翻译：公开了螺杆泵，特别是正排量泵的改进。螺杆飞行和孔之间的间隙增加了一段时间。螺丝在飞行的首选位置平衡。磨损硬质材料如碳化钨被放置在螺旋飞行的外表面的一部分上。磨损测量端口从泵的外表面延伸到孔的内表面。压力调节端口和控制器提供主动的压力反馈控制系统，以控制从螺杆的出口端向螺杆的入口端的压力进给。因此泵的磨损和泵的操作中的压力脉动减小。磨损测量端口可以实现在操作过程中监测泵螺杆磨损的方法，而不必拆卸泵，即通过端口操纵磨损测量装置。磨损测量装置可以是可以连接到监视器的接近传感器。磨损测量端口可以用接近传感器密封在端口中，从而在泵运行时可以监测螺钉的磨损。

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