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1. 发明授权

US4551949A Method and apparatus for dissipating static charge from an abrasive tumbling operation 失效
标题翻译：用于从研磨滚筒操作中消散静电的方法和装置
公开(公告)号：US4551949A
公开(公告)日：1985-11-12
申请号：US620237
申请日：1984-06-13
申请人： David S. Akhavi , Richard W. Cudworth , John R. Kniffin
发明人： David S. Akhavi , Richard W. Cudworth , John R. Kniffin
IPC分类号： B24B31/02
CPC分类号： B24B13/0006 , B24B31/02
摘要： A process and apparatus for dissipating static electrical charge that may build up on the small plastic parts, the tumbling medium or the tumbling chamber itself during an abrasive tumbling process and cause the parts to be repelled out of the abrasive medium. A flow of ionized gas is distributed about the tumbling chamber, discharges the parts and provides a mechanical action to return the parts to the abrasive medium. This flow of ionized gas dissipates the static charge.
摘要翻译：一种用于消除静电荷的过程和装置，其可以在磨料翻转过程中在小塑料部件，翻滚介质或翻滚室本身上积聚并使部件被排出磨料介质。离子化气体的流动分布在翻转室周围，排出零件并提供机械作用以将零件返回到研磨介质。这种电离气体的流动消散静电。

2. 发明授权

US4485061A Method and apparatus for forming rounded ends on plastic filaments 失效
标题翻译：用于在塑料细丝上形成圆形端部的方法和装置
公开(公告)号：US4485061A
公开(公告)日：1984-11-27
申请号：US532349
申请日：1983-09-15
申请人： David S. Akhavi , Richard W. Cudworth
发明人： David S. Akhavi , Richard W. Cudworth
IPC分类号： B29C37/02 , B29C57/00 , B29C57/10 , B29C67/00 , B29C17/12
CPC分类号： B29C67/0029 , B29C37/02 , B29C57/00 , B29C57/10 , B29C67/00 , B29C67/0044 , B29C2793/00 , B29K2023/12 , B29L2031/06 , B29L2031/731 , Y10S425/806 , Y10S425/808
摘要： A method and apparatus for forming a round end on a small plastic filament which includes a die having a channel extending into one side with a hemispherical interior end and a bore extending into the other side and coaxially aligned with the channel and having a conic interior end. The tip of the conic section communicates with the hemispherical section. A relief recess is spaced from the periphery of the hemispherical section by a land portion. The peripheral edge of the land portion, which also forms the edge of the channel, may be formed into a knife edge. In the die the filament is cold-formed to provide a hemispherical section spaced apart from the distal end of the filament. Material displaced during the cold-forming process is deposited in a relief section extending peripherally about the channel. When the cold-formed filament is removed from the die, the portion of the filament distal of the hemispheric portion is cut off and discarded, and the flash and displaced material is removed from the filament by abrasive tumbling.
摘要翻译：一种用于在小塑料细丝上形成圆端的方法和装置，其包括具有延伸到一侧的通道的模具，其具有半球形内端，并且延伸到另一侧并且与通道同轴对准并具有锥形内端。锥形部分的尖端与半球形部分连通。减压凹槽通过陆部与半球形部分的周边隔开。还形成通道边缘的陆部的周边边缘可形成刀刃。在模具中，灯丝被冷成型以提供与灯丝的远端间隔开的半球形部分。在冷成型过程中移位的材料沉积在围绕通道的周边延伸的浮雕部分中。当冷成形的细丝从模具中取出时，将半球形部分的远端的部分纤维切掉并丢弃，并且通过磨料翻滚将闪光和移动的材料从细丝上除去。

3. 发明授权

US4135539A Speed control means for center pivot irrigation system 失效
标题翻译：中心枢纽灌溉系统的速度控制装置
公开(公告)号：US4135539A
公开(公告)日：1979-01-23
申请号：US890033
申请日：1978-03-27
申请人： Edwin J. Hunter , Richard E. Hunter , Richard W. Cudworth
发明人： Edwin J. Hunter , Richard E. Hunter , Richard W. Cudworth
IPC分类号： A01G25/09 , B05B3/12
CPC分类号： A01G25/092
摘要： A method and apparatus for operating a center pivot irrigation system including a plurality of span units, each having a drive carriage having a hydraulically driven motor means for operating associated carriage wheels in response to hydraulic fluid supplied thereto under pressure through hydraulic fluid lines from a source thereof, is operated by supplying hydraulic fluid at a selectable value of constant volume fluid flow to the system to drive the system at a selectable average speed about its center pivot, the flow rate of fluid to individual motor means of individual span units which are ahead or behind of a predetermined relative alignment with the other span units being varied in response to changes in angularity sensed between adjacent span units in both forward and backward directions relative to the direction of travel of the system about its center pivot while the constant volume fluid flow through the system is being maintained at a selectable constant flow rate. An improved hydraulic adjustable rate flow valve accommodates fluid flow in reversible directions while maintaining close control or metering capabilities over the fluid flow through the valve in either flow direction.
摘要翻译：一种用于操作中心枢转灌溉系统的方法和装置，包括多个跨距单元，每个跨距单元具有驱动托架，该驱动托架具有液压驱动的马达装置，用于响应于在压力下通过来自源的液压流体管线在其上供应的液压流体来操作相关联的托架轮通过将液体流体以恒定体积流体流量的可选值供应到系统来操作，以便围绕其中心枢轴以可选择的平均速度驱动系统，流体流向各个跨度单元的各个马达装置或者在与其他跨度单元的预定相对对准之后响应于相对于前后方向上的相邻跨度单元之间相对于系统围绕其中心枢轴的行进方向感测到的角度变化而变化的，而恒定体积流体流通过系统被保持在可选的恒定流速。改进的液压可调速率流量阀在可逆方向上容纳流体流动，同时在流动方向上保持通过阀的流体流动的紧密控制或计量能力。

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