Spa jet yielding increased air entrainment rates

Details Spa jet yielding increased air entrainment rates Spa jet yielding increased air entrainment rates

2011-05-31

2011-05-31

Baker, Lori (Department: 3751)

Baths, closets, sinks, and spittoons

Tubs

Means for agitating or circulating water in a tub

Reexamination Certificate

active

07950077

ABSTRACT:
An improved spa nozzle that is capable of entraining high air flow rates from the surrounding environment, said nozzle of the type having a water input conduit of diameter D, a flow output conduit having entry and diameter of DID, a transition conduit having a diameter of ID and a length of PL, and an air entrainment conduit, and wherein the following ratios are defined to describe the relative geometry of the nozzle: α=PL/(DID−ID), β=DID/ID and γ=D/ID, the improvement comprising: the water input, transition and output conduits being configured such that α is in the range of 1.3-5 and β is>1.9.

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