Power plants – Pressure fluid source and motor – With control means for structure storing work driving energy
Patent
1988-09-19
1990-07-24
Look, Edward K.
Power plants
Pressure fluid source and motor
With control means for structure storing work driving energy
60418, 91265, 91275, 417395, 600 16, F16D 3102
Patent
active
049427350
ABSTRACT:
Apparatus for driving a medical appliance has a single compressor for generating both the positive and negative pressures. The switching valves are connected to the outlet and inlet terminals of the compressor. The outlet and inlet terminals of the compressor are also connected to the positive pressure accumulator and the negative pressure accumulator, respectively. The apparatus has the pressure sensors to sense the pressures in the positive and negative pressure accumulators. When the pressure in the accumulator reaches a set pressure, at least one of the switching valves is closed. The apparatus further has the relief valves connected to the outlet and inlet terminals of the compressor. These relief valves open when the pressures of the compressor become excessive.
REFERENCES:
patent: 3163985 (1965-01-01), Bouyoucos
patent: 3490337 (1970-01-01), Klein
patent: 4548550 (1985-10-01), Tsuji
patent: 4731997 (1988-03-01), Hagin
patent: 4754603 (1988-07-01), Rosman
Mushika Sadahiko
Suzuki Akira
Aisin Seiki Kabushiki Kaisha
Kabushiki Kaisha Shinsangyokaihatsu
Look Edward K.
Ryznic John E.
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