Combination hydraulic pressure regulator and pressure switch
US5613516A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 21, 1995 |
| Grant date | Mar 25, 1997 |
| Priority date | — |
| Expiry date | Dec 21, 2015 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/8326
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A combination hydraulic pressure regulator and pressure switch includes a housing having an interior chamber connecting an inlet port to an outlet port. A seating device is movably received in the interior chamber and has a seat surrounding an opening. The opening is in communication with the outlet port. A poppet is movable in the interior chamber. An adjustment spring normally urges the poppet into engagement with the seat to close the opening, the poppet being movable in a direction away from the seat in response to hydraulic pressure in the interior chamber sufficient to overcome the force of the adjustment spring. A limit switch is mounted to the body. A switch actuator is associated with the poppet for actuating the limit switch in response to movement of the poppet in a direction away from the seat. The seating device is hydraulically balanced in the chamber so that the seat remains engaged with the poppet until a select pressure is exceeded in the interior chamber, thereafter resulting in hydraulic flow from the inlet port to the outlet port.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.