Pneumatic-hydraulic pressure transducer
AssigneeFAG Kugelfischer Georg Schafer (KGaA)
InventorsWilhelm Heubner, Wolfgang Reeb
Life of this patent
Estimating the term…
Abstract
A combined pneumatic and hydraulic pressure transducer is comprised of a pressure capsule with an open interior divided into first and second sections by a partition wall, and a respective axially displaceable diaphragm extends across each of the sections defining third and fourth pressure chambers which change in volume due to axial displacement of the respective diaphragms. A rigid piston intermediate member extends through the partition wall and joins the diaphragms to move together. Connections communicating between the third pressure chambers and between the fourth pressure chambers pass through the intermediate member. A respective hydraulic cylinder at each end of the pressure capsule receives and operates upon a respective end of the intermediate member.
Claims10
A pneumtic and hydraulic pressure transducer, adapted to exert a force in either of two opposite directions, the transducer comprising:
- a pressure capsule with an open interior;
- a partition wall in the capsule across the axis of the capsule dividing the open interior of the capsule into first and second sections along the axis of the capsule;
- a respective first and second axially displaceable diaphragm extending across the first and second sections and across the capsule axis for respectively dividing each of the first and second sections into third and fourth pressure chambers, such that one of the third and fourth pressure chambers enlarges when the other of the third and fourth pressure chambers becomes smaller due to axial displacement of the respective diaphragms in the respective sections;
- an axially displaceable intermediate member joining the first and the second diaphragms for shifting axially together in each axial direction;
- first means pressure connecting the third pressure chambers of the first and second chambers of the first and second sections;
- second means pressure connecting the fourth pressure chambers of the first and second sections;
- a first hydraulic cylinder connected to one of the third pressure chambers;
- and
- a second hydraulic cylinder connected to one of the fourth pressure chambers;
- and
- a fifth pressure connection to one of the third pressure chambers and a sixth pressure connection to one of the fourth pressure chambers.
Dependencies are inferred from the claim text.