公开(公告)号：US12117004B2

公开(公告)日：2024-10-15

申请号：US18470439

申请日：2023-09-20

Applicant: PROTEC CO., LTD.

Inventor： Keon Hee Kim ,  Hwan Seong Park

IPC: F04C2/10 ,  B05B9/08 ,  B05C5/02 ,  B05C11/10 ,  F04C2/107 ,  F04C2/16 ,  F04C13/00 ,  F04C14/22 ,  F04C15/06

CPC classification number: F04C2/107 ,  B05C11/10 ,  F04C2/16 ,  F04C13/002 ,  F04C14/22 ,  F04C15/06 ,  F04C2240/30 ,  F04C2240/806

Abstract: Provided is a progressive cavity pump. The progressive cavity pump operates such that a viscous liquid is discharged by rotating an eccentric rotor with respect to a stator. The progressive cavity pump may be easily disassembled for repair and maintenance, and may be easily attached to an accurate position during re-assembly. Also, in the progressive cavity pump, main components such as a nozzle, a rotor, a stator, etc. may be easily replaced so as to easily adjust dispensing characteristic, while the driving units such as a motor and a rotary shaft are installed in a dispenser, and thus, an idle time of the dispenser may be reduced.

公开(公告)号：US12104588B2

公开(公告)日：2024-10-01

申请号：US17950072

申请日：2022-09-21

Applicant: PROTEC CO., LTD.

Inventor： Seung Min Hong ,  Eui Keun Choi ,  Keon Hee Kim

IPC: F04B49/06 ,  F04B17/03 ,  F16K31/00

CPC classification number: F04B49/06 ,  F04B17/03 ,  F16K31/004

Abstract: A low hysteresis piezo-electric pump using a piezo-electric element as an actuator to dispense a liquid may maintain accurate viscous liquid discharge characteristics by adjusting an applied voltage in response to changes in behavioral characteristics of a piezo-electric actuator depending on causes such as temperature change.