Title:
FLUID PUMP
Document Type and Number:
WIPO Patent Application WO/2023/077492
Kind Code:
A1
Abstract:
A liquid pump includes a pump housing defining first and second cylinders. A rotating actuator is disposed in the pump housing has an annular groove defined on a peripheral surface. First and second pistons are disposed in the first and second cylinders, respectively. Each piston has a piston cam follower at a proximal piston end. The piston cam follower extends out of the respective cylinder and into the annular groove. An inlet port is in fluid communication with each of the cylinders at a proximal cylinder portion. An outlet port is in fluid communication with each of the cylinders at a proximal cylinder portion. An inlet check valve is disposed in each of the first and second cylinders. An outlet check valve is disposed intermediate each of the cylinders and the outlet port.
Inventors:
CHEN JIADA (CN)
GOODWIN RANDY M (US)
GOODWIN RANDY M (US)
Application Number:
PCT/CN2021/129170
Publication Date:
May 11, 2023
Filing Date:
November 07, 2021
Export Citation:
Assignee:
OMS INVEST INC (US)
CHEN JIADA (CN)
CHEN JIADA (CN)
International Classes:
F04B1/16; F04B9/04; F04B17/03
Foreign References:
| CN106499608A | 2017-03-15 | |||
| CN210371056U | 2020-04-21 | |||
| CN113137358A | 2021-07-20 | |||
| CN109210027A | 2019-01-15 | |||
| CN107051832A | 2017-08-18 | |||
| CN105756878A | 2016-07-13 | |||
| SU1052167A3 | 1983-10-30 | |||
| US20180328349A1 | 2018-11-15 | |||
| JP2001234850A | 2001-08-31 |
Attorney, Agent or Firm:
LIU, SHEN & ASSOCIATES (CN)
Download PDF: