|국가/구분||United States(US) Patent 등록|
|발명자 / 주소|
|출원인 / 주소|
|대리인 / 주소||
|인용정보||피인용 횟수 : 2 인용 특허 : 34|
A pressure calibration device can include certain features that allow it to be used with a variety of hydraulic and pneumatic systems. A pressure calibration device can be configured to provide pressure or vacuum, and can have a mode selector for selecting to provide pressure or vacuum. A pressure calibration device can have a volume adjuster configured to modify pressures for hydraulic or pneumatic systems. A pressure calibration device can have a pressure release valve and a bleed valve for adjusting pressure values.
1. A portable calibration pressure device configured to generate vacuum and pressure, said calibration pressure device comprising: a pump having an inlet and an outlet;a manifold fluidly connected to the pump;a reservoir fluidly connected to the pump; anda selector valve configured for operation at pressures up at about 10,000 psi, the selector valve comprising: a selector valve housing comprising a plurality of ports;a spool positioned at least partially within the selector valve housing and configured to move axially within the selector valve housing f...