Fluid handling – With indicator – register – recorder – alarm or inspection means – Position or extent of motion indicator
Patent
1989-09-07
1990-09-18
Rosenthal, Arnold
Fluid handling
With indicator, register, recorder, alarm or inspection means
Position or extent of motion indicator
251212, F16K 332, F16K 3700, F16K 3316
Patent
active
049571397
ABSTRACT:
A low-noise, variable discharge area, valve (10) is constructed having opposed recesses (46, 48) within which a pair of gates (42, 44) are slidably disposed. Each of the gates (42, 44) is provided with upstream edges (50) having a radius thereon, the radius enabling smooth, accelerated, low-noise flow therebetween. The gates (42, 44) are further provided with tracks (62, 64) along each side, which in turn slide along splines (66) set in side walls (54, 55) of the valve (10). A threaded rod (80) which rotates in a threaded insert (82) in a rear wall of each of the gates (42, 44) serves to move the gates within their respective recesses.
REFERENCES:
patent: 2578056 (1951-12-01), French
patent: 3353572 (1967-11-01), Anderson et al.
patent: 4214605 (1980-07-01), Hardgrave
patent: 4253487 (1981-03-01), Worley et al.
Aaron James R.
Gwin Hal S.
Manning John R.
Rosenthal Arnold
Seemann Jerry L.
Sheehan William J.
The United States of America as represented by the Administrator
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