Fluid handling – Line condition change responsive valves – Direct response valves
Patent
1986-06-17
1987-10-27
Cohan, Alan
Fluid handling
Line condition change responsive valves
Direct response valves
137855, 137858, 285179, 285325, F16K 1514, F16L 3726, F16L 4300
Patent
active
047022744
ABSTRACT:
A quick disconnect coupling device for connecting the vertical pipe from a submersible pump in a sewage system to a horizontal pipe includes male and female coupling members. The female coupling member is connected to the horizontal pipe and is coupled to the male coupling member by guideways which are engaged by guide elements on the male coupling member. The male member includes a pair of coupling elements which are connected together to form a 90-degree coupling. A flap type check valve is clamped between the coupling elements of the male coupling member and permits the flow of waste water through the coupling, but prevents the return flow of waste water to the submersible pump.
REFERENCES:
patent: 314107 (1885-03-01), Chappell
patent: 1272794 (1918-07-01), Girtanner
patent: 2386485 (1945-10-01), Longenecker
patent: 3583731 (1971-06-01), Jewell
patent: 4011532 (1977-03-01), Williams et al.
patent: 4130300 (1978-12-01), Sheridan
Bains Herman H.
Cohan Alan
Martinson Manufacturing Company, Inc.
Rivell John A.
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