Fluid handling – Back flow prevention by vacuum breaking – Air vent in liquid flow line
Reexamination Certificate
2005-07-05
2005-07-05
Michalsky, Gerald A. (Department: 3753)
Fluid handling
Back flow prevention by vacuum breaking
Air vent in liquid flow line
Reexamination Certificate
active
06913033
ABSTRACT:
A modular diverter valve with integral atmospheric type vacuum breaker has a housing and a replaceable rotatable cartridge is provided. The housing having a cartridge receiving chamber being surrounded by an internal housing wall. The housing also has an inlet port and laterally directed outlet ports. Each outlet port directs water for selective uses. The rotatable cartridge includes all working parts including a handle engaging portion, an inlet and an outlet for selective alignment with the housing ports. The cartridge has a hollow interior having an inlet tube in communication with the inlet of the cartridge and including a vented hollow space above the inlet tube, and including a float assembly to the vent the cartridge to the atmosphere. The float assembly has a resilient seal for sealing the open end of the inlet tube and a check valve to prevent siphoning to the inlet port.
REFERENCES:
patent: 2303037 (1942-11-01), Fredrickson
patent: 3162210 (1964-12-01), Bemis et al.
patent: 3955598 (1976-05-01), Knapp
patent: 4589438 (1986-05-01), Breda
patent: 5685330 (1997-11-01), Breda
Breda Silvano
Hughes Ivor M.
Hughes Neil H.
Michalsky Gerald A.
Sarkis Marcelo
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