专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US4156416A Engine driven vacuum pump 失效
标题翻译：发动机驱动真空泵
公开(公告)号：US4156416A
公开(公告)日：1979-05-29
申请号：US831816
申请日：1977-09-09
申请人： Thomas W. Weisgerber , Brian K. Nelson , Richard P. Riefel
发明人： Thomas W. Weisgerber , Brian K. Nelson , Richard P. Riefel
IPC分类号： F04B45/04 , F02B1/04 , F02B67/04 , F04B25/00 , F04B35/00 , F04B37/16 , F04B39/00 , F04B39/02 , F04B39/04 , F01M1/00
CPC分类号： F04B39/0269 , F02B67/04 , F04B35/002 , F04B39/0027 , F04B39/0055 , F04B39/044 , F02B1/04
摘要： An engine driven vacuum pump combining a two-stage, low noise demountable pump assembly with a camshaft driven eccentric drive arrangement having internal oil distribution and pumping means for lubricating the drive and pump pushrod elements. A check valve in the cover of the pump assembly defines a second stage pumping chamber which increases pump efficiency while at the same time cyclically closing the pump outlet to reduce external noise attributable to gas discharge from the primary pumping chamber.
摘要翻译：一种发动机驱动的真空泵，其结合了两级，低噪音可拆卸泵组件和具有内部油分配的凸轮轴驱动的偏心驱动装置和用于润滑驱动和泵推动元件的泵送装置。泵组件的盖中的止回阀限定了第二级泵送室，其提高泵效率，同时循环地关闭泵出口以减少归因于来自主泵室的气体排放的外部噪声。

2. 发明授权

US4386891A Rotary hydraulic vane pump with undervane passages for priming 失效
标题翻译：旋转液压叶片泵，带底座通道用于起动
公开(公告)号：US4386891A
公开(公告)日：1983-06-07
申请号：US256722
申请日：1981-04-23
申请人： Richard P. Riefel , John G. Henne , David A. Dean
发明人： Richard P. Riefel , John G. Henne , David A. Dean
IPC分类号： F04C2/344 , F01C21/08 , F04C2/00 , F04C15/00
CPC分类号： F01C21/0863 , F04C2270/701
摘要： A balanced vane type hydraulic pump has a thrust plate and a pressure plate which cooperate with a cam ring, rotor and vanes to provide a plurality of pump chambers. During pump operation, fluid trapped under the vanes flows from under the vanes at the discharge port, as the vane recedes, to under the vanes at the inlet port to assist vane extension and improve pump priming. The undervane fluid passes through grooves in both plates with the groove in the pressure plate being in communication with the discharge flow of the pump. The grooves incorporate restrictions to the undervane fluid flow between the discharge and inlet positions of the vanes with the restriction in the thrust plate permitting more fluid flow than the restriction in the pressure plate to ensure that most of the fluid will pass through the rotor under the vanes in the inlet position to assist in vane extension.
摘要翻译：平衡叶片式液压泵具有止推板和压板，该压板与凸轮环，转子和叶片配合以提供多个泵室。在泵运行期间，捕获在叶片下方的流体在叶片从叶片下方排出的叶片的叶片下降到入口端的叶片下面，以帮助叶片延伸并改善泵启动。底盘流体通过两个板中的凹槽，压力板中的凹槽与泵的排出流相连通。这些凹槽对叶片的排出口和入口位置之间的底部流体流动的限制，其中推力板中的限制允许比压力板中的限制更多的流体流动，以确保大部分流体将在叶片在入口位置以辅助叶片延伸。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式