| 摘要 |
<p>1,180,512. Valves. BENDIX CORP. 13 March, 1968 [20 March, 1967]. No. 12223/68. Heading F2V. [Also in Division G3] The loading of piston 28 of a fluid pressure regulator is controlled by one or more pure fluid amplifiers 30, 40 (see Division G3). Fluid from a variable pressure source 20, e.g. a gas bottle, flows past closure 22 and ventilated disc 26 to cylinder 52, 60 which houses a spring-loaded piston 28 and which is connected at 50, 58 to the amplifiers which regulate the pressure Pr of the fluid issuing from outlet 62. In operation, an increase in Pr increases the pressure Pc at port 36 of amplifier 30 so increasing the pressure at exhaust 34 and the pressure at control port 46 of amplifier 40. Since the pressure at exhaust 44 is tied to Pr, an increase in the pressure at port 46 results in an increase in the pressure Pi at part 42 which increases the pressure in cylinder chamber 52 so moving piston 28 to the left and thereby throttling the flow past closure 22 to amplifier inlets 32, 42 and so reducing pressure Pr. Figs. 4-6 (not shown) illustrate a detailed construction using the same references as in Fig. 1. According to a modification (not shown) amplifier 40 can be dispensed with and port 34 is connected directly to chamber 52. Specification 1,136,533 is referred to.</p> |
