Pinch valve
US8622365B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 16, 2012 |
| Grant date | Jan 7, 2014 |
| Priority date | — |
| Expiry date | May 16, 2032 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16K7/045
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A pinch valve includes a spring disposed between a movable iron core of a solenoid and an end cover thereof, and which urges the movable iron core toward the side of a tube provided in a body. An elastic force of the spring is set to be smaller than a reactive force of the tube that is applied to a valve plug. In a non-excited state of the solenoid, the valve plug is pressed toward the solenoid by the reactive force of the tube, so as to enable a fluid to flow through a flow passage of the tube. Conversely, in an excited state of the solenoid, since an attractive force of the movable iron core toward the tube is added to the elastic force of the spring, the valve plug is pressed in opposition to the reactive force of the tube for thereby blocking the flow passage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.