Actuator and zone valve
US5540414A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 3, 1994 |
| Grant date | Jul 30, 1996 |
| Priority date | — |
| Expiry date | May 3, 2014 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16K31/045
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A valve body including a first body member and a second body member adjacent the first body member, with the first and second body members defining a through-passage. A ball valve element having a bore therethrough is disposed within the valve body. A ball seat is interposed between the first and second body members. The ball seat is positioned to sealingly engage the ball valve element when the ball valve element is in the closed position to prevent fluid from passing by the ball valve element. The ball seat is resiliently biased against the first body member and against the ball valve element by a single biasing member positioned to provide both a fluid seal and a resilient bias between the ball seat and the first body member.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.