Rotatable valve assembly
US5947445A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 30, 1996 |
| Grant date | Sep 7, 1999 |
| Priority date | — |
| Expiry date | Aug 30, 2016 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T74/2144
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
Rotatable valve assembly includes a mounting mechanism for rotatably mounting a valve in a housing. The mounting mechanism includes a shaft having an outside end extending through the housing. A conversion mechanism converts fluid pressure in the housing into torque exerted on the shaft. A release mechanism is located outside the housing for preventing rotation of the shaft and valve when the torque exerted on the shaft is below a selected magnitude. A linearizing mechanism converts the forces exerted on the release mechanism by the shaft into a linear force. The release mechanism allows the shaft to rotate when the torque exerted on the shaft and the linear force exerted on the release mechanism exceeds a selected magnitude. A seal is provided for sealing the gap between the valve and the housing in the closed position of the valve. The seal includes a support edge sealingly secured to the housing, a sealing edge extending inwardly from the support edge into contact with the valve circumference in the closed position of the valve, and a seal body connected between the support edge and the sealing edge and spacing the sealing edge axially towards the inlet face of the valve from th…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.