Fluid handling – Flow affected by fluid contact – energy field or coanda effect – Means to regulate or vary operation of device
Patent
1978-01-06
1980-03-18
Stellar, George G.
Fluid handling
Flow affected by fluid contact, energy field or coanda effect
Means to regulate or vary operation of device
137837, H04R 2300
Patent
active
041940954
ABSTRACT:
A fluid flow control system has a fluid source and plural flow pipes connected to the fluid source. Each of the pipes has an opening of a specific area corresponding to one of the bit orders of a PCM (Pulse Code Modulated) input signal. The flow-condition of the fluid through each of the pipes is controlled by the PCM signal without changing the PCM signal to an analog signal. The summation of the outflow from each of the pipes combines to produce an analog flow output signal in response to the PCM input signal.
REFERENCES:
patent: 3148691 (1964-09-01), Greenblott
patent: 3339569 (1967-09-01), Bauer et al.
patent: 3563306 (1971-02-01), Osheroff
patent: 3648987 (1972-03-01), Arikawa
Doi Toshitada
Hamada Osamu
Hamada Yuichiro
Hukuda Jyoji
Iga Akira
Eslinger Lewis H.
Sinderbrand Alvin
Sony Corporation
Stellar George G.
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