会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 2. 发明授权
    • Pneumatic ratemeter and counter
    • 气动测速仪和计数器
    • US3716707A
    • 1973-02-13
    • US3716707D
    • 1971-12-29
    • GRIFFIN PSHARKI M
    • SHARKI MGRIFFIN P
    • G06D1/00F15B21/00F15C1/00G01P3/28G06M1/12G06M1/18G06M1/00
    • G06M1/183F15B21/00F15C1/003G01P3/28G06M1/123Y10T137/86445
    • A one-shot sensor valve receives a mechanical force from pump rod movement and operates to pressurize a one-shot air tank from a regulated air supply. When the pump rod moves back to its original position, the one-shot tank is discharged into fluidic logic circuitry which energizes a counter and passes the air signal to a ratemeter transfer valve and into a one-shot storage valve. The one-shot storage valve stores air pressure in a second one-shot air tank and a time air tank receives compressed air at a constant and predetermined rate from a flowrater through the ratemeter transfer valve. When the transfer valve is energized, the pressure in the time tank is transferred through a booster relay to a readout device. As the signals are coupled from the counter to the ratemeter, the second one-shot air tank is released into a dump pilot valve operator and a dump valve to discharge the time air tank. In the time between the dumping of the time tank and its transfer into the readout device, the time tank is building pressure at a set rate determined by the flowrater. The time between pulses is then represented by a pressure buildup in the time tank. In an alternative embodiment, the flowrater is replaced with a timing motor which drives a timing disc having a hole therethrough which causes air to be passed alternately through a pair of air switches which respectively cause an air volume tank to be pressured up and dumped at a rate commensurate with the rotation of the disc. Based upon the principal that when a given volume of air at a given pressure is allowed to expand into a second volume on a timed cycle, the resultant pressure at any time is a measure of the time from the first cycle to the time of measurement, the pressure in the air timing tank at any time is thus proportional to the rate of pulses generated by the one-shot sensor valve or by the mechanical force that causes the one-shot sensor valve to operate.