Pilot valve and/or proportional valve
US9714722B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 6, 2015 |
| Grant date | Jul 25, 2017 |
| Priority date | — |
| Expiry date | Mar 6, 2035 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16K31/523
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A switching or proportional valve has a valve drive, a valve body actuated by the valve drive, and at least one valve seat that, together with the valve body, delimits a flow cross-section for a flow medium conducted through the valve, wherein the flow cross-section is variable depending on the position of the valve body relative to the valve seat. The valve drive may be a rotary drive having a rotatable actuator, the actuator being coupled to the valve body in such a manner that the position of the valve body relative to the valve seat changes depending on the rotary position of the actuator. An eccentric element is rotationally related with the actuator. A spring-actuated return device with a plunger pressed by a spring against the eccentric element acts to return the eccentric element and the actuator to a starting position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.