Fluid handling – Line condition change responsive valves – Bi-directional flow valves
Patent
1992-11-25
1993-11-16
Hepperle, Stephen M.
Fluid handling
Line condition change responsive valves
Bi-directional flow valves
13750537, 1375135, F16K 1506, G05D 1602
Patent
active
052614476
ABSTRACT:
The invention is an improvement in a pneumatic regulating valve of the type having a main flow path and a bleed passage. In the improvement, the bleed passage is in parallel with the main flow path and regulates a downward-trending pressure at the outlet port to prevent such pressure from diminishing or from rapidly diminishing. The valve also includes a check valve in series with the bleed passage for regulating an upward-trending pressure at the outlet port. Using a constant bleed orifice to substantially pressure-balance the check valve and a small-area protrusion on the check valve to reduce contact area, the check valve exhibits very low hysteresis.
REFERENCES:
patent: 685169 (1901-10-01), Paul
patent: 1126385 (1915-01-01), Burns
patent: 1324110 (1919-12-01), Eaton
patent: 1514217 (1924-11-01), Messer
patent: 1540439 (1925-06-01), Thrall
patent: 2352307 (1944-06-01), Arey
patent: 3062525 (1962-11-01), Schutmaat
patent: 3115154 (1963-12-01), Dillon
patent: 3420257 (1969-01-01), Lansky et al.
patent: 3459403 (1969-08-01), Royer
patent: 3460559 (1969-08-01), Pullen et al.
patent: 3567193 (1971-04-01), Rothfuss
patent: 3625247 (1971-12-01), Dargatz
patent: 4037621 (1977-07-01), Budzich
patent: 4498499 (1985-02-01), Knorreck et al.
patent: 4574834 (1986-03-01), Inoue
patent: 4632358 (1986-12-01), Orth et al.
patent: 4693267 (1987-09-01), Patterson
patent: 4811756 (1989-03-01), Hall
patent: 4966183 (1990-10-01), Williamson, Jr.
patent: 5072749 (1991-12-01), Ligh
patent: 5090438 (1992-02-01), Nimberger
Fred Knapp Engraving Co., Inc.
Hepperle Stephen M.
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