Poppet relief valve
US4072165A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 3, 1976 |
| Grant date | Feb 7, 1978 |
| Priority date | — |
| Expiry date | May 3, 1996 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/7835
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A poppet type relief valve includes a poppet and associated seat with the poppet being mounted in an actuator which is connected to the poppet by a lost-motion connection. The poppet is spring loaded with respect to the actuator, and the actuator is also spring loaded toward the seat. When pressure is applied between the poppet and the actuator, the actuator is forced back against its spring until the lost motion is taken up. Further increases in pressure cause the actuator to pull the poppet away from its seat permitting flow through the valve in one direction. Pressure applied on the opposite side of the poppet causes the poppet to move away from the seat without necessarily moving the actuator simply by overcoming the force of the spring between the poppet and the actuator. Thus, pressure on one side of the poppet will cause it to open at a predetermined pressure, and pressure on the opposite side will also cause it to open at another predetermined pressure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.