G - Physics – 05 – D
Patent
G - Physics
05
D
137/139, 299/23
G05D 7/00 (2006.01) B05B 1/14 (2006.01) E03C 1/08 (2006.01)
Patent
CA 1213190
ABSTRACT In a stream-controlling device for faucets, water from the faucet passes through a first flow-restricting orifice in a circular flow restrictor mounted in a casing secured to the faucet, the restrictor having a conical wall portion sloping downwardly and inwardly toward the orifice. From the latter water enters a chamber between the restrictor and the casing's bottom wall, the latter having opposite the orifice a recess with a conical surface which deflects the water radially outward through an annular second flow-restricting orifice formed by the bottom wall and the lower end of the restrictor's conical wall. From this second orifice, which has a larger,throughflow area than the first orifice, water enters an annular sub- chamber having a substantially enlarged volume due to the restrictor's conical wall. The water is then divided so that part of it discharges through a radially inner set of holes in the bottom wall and the remainder through an outer set of holes, these holes collectively constituting a third flow-restricting orifice having a larger throughflow area than the second ori- fice.
453466
Borden Ladner Gervais Llp
Wpm Inc.
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