Fluid handling – Back flow prevention by vacuum breaking – Air vent in liquid flow line
Patent
1985-03-05
1987-01-13
Walton, George L.
Fluid handling
Back flow prevention by vacuum breaking
Air vent in liquid flow line
137801, 210418, 2104332, 251251, 251353, 251354, 251263, 285162, F16K 3152, F16K 3160
Patent
active
046356738
ABSTRACT:
An in-line accessory faucet having a separable plastic air-gap module for use with a reverse osmosis unit, the faucet being installable without the module when used without a reverse osmosis unit. The air-gap module slides onto the faucet pipe conduit below the housing, and has brine flow passages and a channel formed in the top surface and closed off by the overlying flat surface of a base member between the housing and air-gap module. A valve seat in the housing connects to both the housing and the pipe conduit. The valving in the housing has an in-line configuration, with the faucet inlet and outlet being on a common central axis. A mounting nut with an expandable - collapsible portion and peripheral side channels for brine tubes permits mounting of the faucet solely from above the sink lip. A handle with two lower camming surfaces is operated only downwardly to obtain both pressure - controlled flow or locked-on flow. The handle pivots on an axis perpendicular to and intersecting the faucet central axis, and surrounds and operates with rotatable trunnions on the faucet outlet to obtain independent rotation of the handle and faucet outlet. An aesthetic accessory faucet with a simple and economical manufacture, assembly, mounting and operation is accordingly provided.
REFERENCES:
patent: 218135 (1879-08-01), Rich
patent: 2621746 (1952-12-01), Beauregard
patent: 3620241 (1971-11-01), Brown
patent: 3967638 (1976-07-01), Tondreau
patent: 4134419 (1979-01-01), Richetti
patent: 4210533 (1980-07-01), Ash
patent: 4234218 (1980-11-01), Rogers
patent: 4260130 (1981-04-01), Brehm
patent: 4454891 (1984-06-01), Dreibelbis et al.
Walton George L.
WPM, Inc.
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