Automatic swimming pool cover drainer

Details Automatic swimming pool cover drainer Automatic swimming pool cover drainer

1988-07-21

1989-05-16

Michalsky, Gerald A.

Fluid handling

Siphons

Periodic or accumulation responsive discharge

4198, 137140, 137399, 137400, 137448, F04F 1000

Patent

active

048300403

ABSTRACT:
A float controlled siphon discharge valve mechanism operates to drain water from a swimming pool cover, and includes a lever arm attached at one end to a hinge and having a float on the other end so that the lever is of the second or third type. A closure control is also included to sense for the presence of water immediately adjacent to the drain opening, and includes a spring loaded control arm connected to the lever arm to force the lever arm into a drain occluding position even if the float does not move that lever arm into such a position in order to ensure that the siphon is not broken even in the event that the float operation malfunctions.

REFERENCES:
patent: 301391 (1884-07-01), Reinecke
patent: 499059 (1893-06-01), Traver
patent: 1025608 (1912-05-01), Bliss
patent: 1068995 (1913-07-01), Ferrero
patent: 2542591 (1951-02-01), Streety et al.
patent: 3757812 (1973-09-01), Duncan
patent: 4168717 (1979-09-01), Rinker
patent: 4318421 (1982-03-01), Ward

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