Actuator mechanism for double bent bellows sealed rotary valve
US4468002A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 11, 1982 |
| Grant date | Aug 28, 1984 |
| Priority date | — |
| Expiry date | Mar 11, 2002 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16K41/106
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A valve body includes a chamber for the flow of fluid between an inlet and outlet thereto. A valve member, such as a ball valve member, is positioned in the chamber for rotation between an open position and a closed position to open and close the chamber. An actuator is rotatable about an axis coaxially aligned with the valve member axis. A lower end portion of a valve stem is connected to the valve member and an upper end portion is connected to the actuator. The valve stem upper end portion is displaced angularly from the valve stem lower end portion. The valve stem lower end portion has an axis aligned with the rotational axes of the valve member and the actuator. The axis of the valve stem upper end portion is positioned in spaced parallel relation to the axes of the actuator and the valve member. Thus, the upper end of the valve stem is offset from the axis of rotation of the actuator so that the valve stem upper end portion orbits about the actuator axis as the actuator is rotated to move the valve member between the open and closed positions. The valve stem is sealed by a bent bellows. A bearing assembly rotatably supports the upper ends of the valve stem and bellows in the …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.