Fluids rate of flow saving or limiting device

Details Fluids rate of flow saving or limiting device Fluids rate of flow saving or limiting device

1989-06-02

1990-10-16

Nilson, Robert G.

Pipes and tubular conduits

With flow regulators and/or baffles

Restrictors

137504, G05D 701

Patent

active

049627929

ABSTRACT:
The clogging by impurities and the annoying noise caused by the rattling action of the internal parts of a fluids rate of flow saving or limiting device comprising a tubular fitting having an inlet end of larger diameter and an outlet end of smaller diameter with an internal shoulder formed therebetween, and a needle type shutter actuated by a spring concentrically arranged within said tubular fitting, are avoided by the improvement comprising a shutter formed by an upper larger diameter body and a lower smaller diameter body arranged concentrically within said fitting, a circular flange on the upper end of said upper body, a shoulder between said upper and lower bodies, said shoulder comprising a plurality of downwardly extending projections, at least one surface groove extending longitudinally of said upper body to permit free non-clogging passage of the fluid, and a soft material washer sandwiched between a pair of rigid washers supported on the internal shoulder of said fitting, said soft washer projecting inwardly of said rigid washers, whereby when vibration of the shutter is produced by the fluid, said shutter will strike against said soft washer thus avoiding the noise produced by the rattling of the device.

REFERENCES:
patent: 780986 (1905-01-01), Francis
patent: 3503417 (1970-03-01), Toda
patent: 3805824 (1974-04-01), Robbins
patent: 4075294 (1978-02-01), Saito
patent: 4650094 (1987-03-01), Werding

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