Pressure controlling apparatus and liquid ejecting apparatus
US10207513B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 8, 2016 |
| Grant date | Feb 19, 2019 |
| Priority date | — |
| Expiry date | Nov 8, 2036 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2/175
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A pressure controlling apparatus includes a seat having a communication hole through which a first space and a second space, in which a liquid flows, are in communication with each other, a pressure receiving plate configured to move with a change in pressure in the second space, a valve member configured to open and close the communication hole in conjunction with the movement of the pressure receiving plate, and a biasing member disposed between the pressure receiving plate and the seat and configured to bias the pressure receiving plate. The biasing member includes a first portion in contact with the pressure receiving plate and a second portion positioned closer than the first portion to the seat. The first portion has a larger diameter than the second portion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.