| 摘要 |
<p>1,209,532. Pure fluid amplifiers. CORNING GLASS WORKS. June 11, 1968 [June 13, 1967], No.27740/68. Heading G3H. [Also in Division G1] A device for measuring dimension transmits the back pressure in nozzle feeding conduit 82 to a two stage pure fluid proportional amplifier, the two outputs of which, 72, 74, are fed to a calibrated manometer tube 76. First stage amplifier 34 and second stage amplifiers 48, 62 each have one of their control orifices fed with a pre-set bias pressure 42, 52, 70. In a modification Fig.4 (not shown) the first stage consists of two proportional amplifiers the outputs of which feed opposite control orifices of a single amplifier constituting the second stage and having its two output limbs connected to the manometer.</p> |
