公开(公告)号：US5044889A

公开(公告)日：1991-09-03

申请号：US523981

申请日：1990-05-16

Applicant: Dennis Pinkerton

Inventor： Dennis Pinkerton

IPC: F04B13/00 ,  F04B7/06 ,  F04B49/00

CPC classification number: F04B49/005 ,  F04B7/06

Abstract: A valveless, positive displacement metering pump is provided by the invention. Such a pump includes a housing, a working chamber within the housing, a piston within the working chamber, the piston including a duct defined by a portion of its outer surface, one or more inflow ports communicating with the working chamber, one or more outflow ports communicating with the working chamber, and a drive cylinder for simultaneously rotating the piston and causing it to move in back and forth strokes within the working chamber. The housing is rotatable with respect to the piston to adjust the timing of the fluid communication between the duct and the inflow and outflow ports, respectively. Such adjustments in timing allow the flow rate of the pump to be fine tuned, and allow each port to experience a partial suction as well as a partial discharge. A method for adjusting the flow rate of a valveless, positive displacement metering pump is also provided which includes adjusting the phases at which the piston duct communicates with each of the ports of the pump.

公开(公告)号：US5015157A

公开(公告)日：1991-05-14

申请号：US463260

申请日：1990-01-10

Applicant: Dennis Pinkerton ,  Robert W. Jaekel ,  Guillermo P. Pardinas

Inventor： Dennis Pinkerton ,  Robert W. Jaekel ,  Guillermo P. Pardinas

IPC: F04B13/00 ,  F04B7/06 ,  F04B13/02

CPC classification number: F04B7/06

Abstract: A valveless, positive displacement metering pump is provided which is capable of either mixing two or more fluids or dividing a fluid from an inflow line into two or more outflow lines. The pump includes a housing which contains a cylindrical working chamber at different radial positions. Three or more passages extend through the housing and communicate with the working chamber. A piston is positioned within the working chamber. The piston includes a duct defined by its outer surface which communicates with one of the passages, depending upon its rotational position. The piston is rotated as it is driven back and forth within the cylinder, thereby causing the duct to sequentially communicate with the passages and the piston to sequentially close the passages. Depending upon the axial direction of movement of the piston, fluid is either pumped into or out of the working chamber as the duct rotates into communication with one of the passages.

公开(公告)号：US5092037A

公开(公告)日：1992-03-03

申请号：US643903

申请日：1991-01-18

Applicant: Dennis Pinkerton

Inventor： Dennis Pinkerton

IPC: F04B7/06

CPC classification number: F04B7/06 ,  Y10T29/49295 ,  Y10T29/49826

Abstract: A valveless, positive displacement pump including a living hinge for angularly adjusting a pumping head with respect to a rotatable drive member is provided. A method of manufacturing such a pump is also provided. The pump includes a block to which a pumping head and drive member are mounted. The block includes a first support pivotably connected to a second support by means of an integral, flexible hinge. The pumping head is mounted to the first support while the rotatable drive member is mounted to the second support. Movement of the first support about the flexible hinge allows the stroke of the piston, and therefore the flow rate of the pump, to be adjusted. Such a pump may be manufactured by extruding the block in elongate form and then cutting it into individual sections to which pumping heads may be mounted.

Abstract translation: 提供一种无阀式容积式泵，其包括用于相对于可旋转驱动构件角位移地调节泵头的活动铰链。 还提供了制造这种泵的方法。 泵包括一个安装泵头和驱动件的块。 该块包括通过一体的柔性铰链可枢转地连接到第二支撑件的第一支撑件。 当可旋转驱动构件安装到第二支撑件时，泵头安装到第一支撑件。 关于柔性铰链的第一支撑件的运动允许调节活塞的冲程，并因此调整泵的流量。 这样的泵可以通过将块挤压成细长形状然后将其切割成可以安装泵头的单个部分来制造。

公开(公告)号：US5020980A

公开(公告)日：1991-06-04

申请号：US461377

申请日：1990-01-05

Applicant: Dennis Pinkerton

Inventor： Dennis Pinkerton

IPC: F04B13/00 ,  F04B7/06 ,  F04B49/00

CPC classification number: F04B7/06

Abstract: A valveless, positive displacement pump including a living hinge for angularly adjusting a pumping head with respect to a rotatable drive member is provided. The pump includes a block to which a pumping head and drive member are mounted. The block includes a first support pivotably connected to a second support by means of an integral, flexible hinge. The pumping head is mounted to the first support while the rotatable drive member is mounted to the second support. Movement of the first support about the flexible hinge allows the stroke of the piston, and therefore the flow rate of the pump, to be adjusted. Such a pump may be manufactured by extruding the block in elongate form and then cutting it into individual sections to which pumping heads may be mounted.