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    DIFFERENTIAL PRESSURE MOTOR AND METHOD FOR OPERATING A DIFFERENTIAL PRESSURE MOTOR
    1.
    发明申请
    DIFFERENTIAL PRESSURE MOTOR AND METHOD FOR OPERATING A DIFFERENTIAL PRESSURE MOTOR 审中-公开

    公开(公告)号：US20200367922A1

    公开(公告)日：2020-11-26

    申请号：US15931170

    申请日：2020-05-13

    申请人： Heraeus Medical GmbH

    发明人： Sebastian Vogt ,  Thomas Kluge

    IPC分类号： A61B17/3203 ,  F04B9/131 ,  F15B15/14 ,  A61B17/16 ,  A61B17/14

    摘要： A differential pressure motor comprising two working pistons and a rod that move in a hollow space. Walls defining the hollow space have five openings. A valve piston moves between and against the working pistons and can be driven by the working pistons. The valve piston with the five openings forms a valve with which an alternate impact of a first pressure and a second pressure on the working pistons is controllable when the pressures are applied to three of the five openings such that the working pistons periodically move which drives a periodic movement of the valve piston. Also disclosed are a surgical drive system with, a medical lavage system for the debridement of soft tissue and/or bone tissue having, and a medical device for brushing, rasping or sawing soft tissue and/or bone tissue with such a differential pressure motor, and a method for operating a differential pressure motor.

    Pump arrangement driven by compressed-air
    3.
    发明授权
    Pump arrangement driven by compressed-air 失效
    由压缩空气驱动的泵排列

    公开(公告)号：US4971531A

    公开(公告)日：1990-11-20

    申请号：US426711

    申请日：1989-10-26

    申请人： Vilho Aikioniemi

    发明人： Vilho Aikioniemi

    IPC分类号： F04B9/127 ,  F04B9/131 ,  F04B9/135

    CPC分类号： F04B9/1315

    摘要： A compressed air pump comprising a compressed air piston motor (11) having a cylinder housing (12) and a low pressure piston (22) moveable between first and second end wall parts (13, 14) and a hydraulic piston pump (15) in the second end wall part (14). One side of the low pressure piston and the first end wall part together define a working chamber (21) and the other side of the piston (22) abuts and drives the hydraulic piston (24). A pilot piston (25), which is controlled by the low pressure piston (22) controls the supply of compressed air to the working chamber (21). A spring powers the return stroke of the low pressure piston and the hydraulic piston. The pilot piston (25) is housed in a pilot cylinder (35) incorporated in the first end wall part (13) and is mounted for movement between a first position and a second position. In the first position compressed air can be passed from an inlet (17) in the end wall part to the working chamber. In the second position the supply of compressed air is interrupted and an outlet opening (31) located between the working chamber (21) and an outlet (32) is opened so that return air can be evacuated. The pilot piston (25) has mounted therein a control piston (26) which is connected to the low pressure piston (22) and which controls the pilot piston to cause it to move from the first to the second position by opening a compressed air connection (41) to the pilot piston's working chamber (36).

    摘要翻译： 一种压缩空气泵，包括具有可在第一和第二端壁部分（13,14）之间移动的气缸壳体（12）和可移动的低压活塞（22）的压缩空气活塞马达（11）和液压活塞泵（15） 第二端壁部分（14）。 低压活塞和第一端壁部分的一侧一起限定了工作室（21），活塞（22）的另一侧邻接并驱动液压活塞（24）。 由低压活塞（22）控制的先导活塞（25）控制向工作室（21）的供给压缩空气。 弹簧为低压活塞和液压活塞的回程起动。 先导活塞（25）容纳在并入第一端壁部分（13）中的先导缸（35）中，并安装成在第一位置和第二位置之间移动。 在第一位置，压缩空气可以从端壁部分中的入口（17）传递到工作室。 在第二位置，压缩空气的供给中断，并且位于工作室（21）和出口（32）之间的出口开口（31）被打开，从而能够抽空回流空气。 先导活塞（25）安装有控制活塞（26），控制活塞（26）连接到低压活塞（22），并通过打开压缩空气连接来控制先导活塞使其从第一位置移动到第二位置 （41）连接到先导活塞的工作室（36）。

    Reciprocating pumps
    5.
    发明授权
    Reciprocating pumps 有权

    公开(公告)号：US10253761B2

    公开(公告)日：2019-04-09

    申请号：US15174924

    申请日：2016-06-06

    申请人： WHITE KNIGHT FLUID HANDLING INC.

    发明人： John M. Simmons ,  Tom M. Simmons ,  Kenji Allen Kingsford ,  David M. Simmons

    IPC分类号： F04B9/131 ,  F04B23/02 ,  F04B19/22 ,  F04B43/02 ,  F04B53/10 ,  F04B53/14 ,  F04B53/16

    摘要： Reciprocating fluid pumps include a pump body including a cavity therein, a plunger located at least partially within the cavity, and a shift canister assembly disposed within the cavity. The shift canister assembly includes a sealing surface for forming a seal against the pump body. An area covered by the seal between the sealing surface and the pump body is less than about 75% of an outer cross-sectional area of the shift canister assembly. The shift canister assembly may include a shift canister and a shift canister cap attached thereto, the shift canister cap comprising the sealing surface. Reciprocating fluid pumps include a shift canister, a shift piston at least partially disposed within the shift canister, and a shift canister cap attached to the shift canister on a longitudinal end of the shift canister opposite the shift piston. Methods include forming such reciprocating pumps.

    Infinitely variable pneumatic pulsatile pump
    6.
    发明授权
    Infinitely variable pneumatic pulsatile pump 失效

    公开(公告)号：US5487649A

    公开(公告)日：1996-01-30

    申请号：US128850

    申请日：1993-09-29

    申请人： James H. Dorsey, III ,  Joe E. West

    发明人： James H. Dorsey, III ,  Joe E. West

    IPC分类号： F04B9/131 ,  A61M1/00 ,  F04B43/06 ,  F04B43/10 ,  F04B53/10 ,  F04B45/00

    CPC分类号： F04B43/10 ,  F04B43/06 ,  F04B53/1065 ,  Y10T137/86002

    摘要： A pulsatile pump the output of which is infinitely variable between a slow pulsatile flow and increased up to a sharply pulsed flow rate until the pulses run together and a smooth flow results, and which may be varied between wide output pressure and frequency limits. The pump is comprised of a pneumatic control circuit, at least two pneumatically isolated compression chambers, and a novel inlet/outlet pump cartridge and condition-responsive locking means. Operation of the pump is controlled by the use of novel tactile pneumatic response switches. Each compression chamber is communicated with a supply of working fluid through the cartridge. Means are provided for varying the operation of the pneumatic circuit and hence the pump. A flow of pressurized fluid, such as air or nitrogen, is used as the operating media of the pneumatic circuit, although other fluids may be used. Means for monitoring and adjusting pump system parameters are also provided. The pump operates entirely through the use of pneumatic energy, avoiding the use of electricity.

    Internal combustion engine oil pump
    7.
    发明授权
    Internal combustion engine oil pump 失效
    内燃机油泵

    公开(公告)号：US5275539A

    公开(公告)日：1994-01-04

    申请号：US896143

    申请日：1992-06-09

    申请人： Donald E. Custer, Jr. ,  James E. Macier ,  John M. Mahoney, II ,  Geno C. Mangubat

    发明人： Donald E. Custer, Jr. ,  James E. Macier ,  John M. Mahoney, II ,  Geno C. Mangubat

    IPC分类号： F01M1/02 ,  F01M1/16 ,  F01M3/00 ,  F02B61/04 ,  F04B9/131 ,  F04B53/12 ,  F04B17/00

    CPC分类号： F04B9/1315 ,  F01M1/16 ,  F01M3/00 ,  F02B61/045 ,  F04B53/121 ,  F01M1/02 ,  F16N2230/02 ,  F16N2270/30 ,  F16N2280/02

    摘要： A lubricant pump for supplying lubricant to an internal combustion engine, the pump comprising a housing defining a pump chamber, an inlet which is adapted to communicate with a source of lubricant and which communicates with the pump chamber, and an outlet which is adapted to communicate with the internal combustion engine and which communicates with the pump chamber, the housing also at least partially defining a fluid chamber, a source of fluid under pressure, a solenoid for selectively and alternatively affording and preventing communication of the fluid chamber with the fluid source, and a pumping member for drawing lubricant into the pump chamber in response to communication of the fluid chamber with the fluid source and for forcing lubricant out of the pump chamber in the absence of communication between the fluid chamber and the fluid source.

    摘要翻译： 一种用于向内燃机供应润滑剂的润滑剂泵，该泵包括限定泵室的壳体，适于与润滑剂源连通并与泵室连通的入口以及适于连通的出口 所述内燃机与所述泵室连通，所述壳体还至少部分地限定流体室，处于压力下的流体源，螺线管，用于选择性地和可选地提供和防止所述流体室与所述流体源的连通， 以及泵送构件，用于响应于流体室与流体源的连通而将润滑剂吸入泵室，并且用于在不存在流体室和流体源之间的连通的情况下迫使润滑剂离开泵室。

    Reciprocating device and switching mechanism therefor
    8.
    发明授权
    Reciprocating device and switching mechanism therefor 失效
    往复装置及其切换机构

    公开(公告)号：US4827831A

    公开(公告)日：1989-05-09

    申请号：US139377

    申请日：1987-12-30

    申请人： E. Dale Hartley ,  F. Scott Hartley

    发明人： E. Dale Hartley ,  F. Scott Hartley

    IPC分类号： F04B9/131 ,  F01B31/02 ,  F01L23/00 ,  F15B11/15

    CPC分类号： F01B31/02 ,  F01L23/00 ,  Y10T137/86686

    摘要： A reciprocating device comprising a housing having a chamber and a reciprocable member reciprocable in the chamber. First and second pressure valves are connectible to a source of fluid under pressure to drive the reciprocable member and first and second passages lead from the first and second pressure valves to the chamber on opposite sides of the reciprocable member, respectively. First and second exhaust valves are coupled, respectively, to the first and second passages at locations intermediate the associated pressure valve and the chamber and communicating with the first and second vents, respectively. Actuators are drivable by the piston for switching the valves between first and second positions, and the fluid under pressure retains the valves in whichever of the positions they are placed.