Device for generating a jet stream of air entrained water

Details Device for generating a jet stream of air entrained water Device for generating a jet stream of air entrained water

2005-01-04

2005-01-04

O'Connor, Cary E. (Department: 3732)

Dentistry

Apparatus

Having intra-oral dispensing means

C433S098000

Reexamination Certificate

active

06837708

ABSTRACT:
A device for generating a jet stream of air entrained water for cleaning teeth and gums, includes two pumps disposed to respectively and sequentially pump in and out of internal ports thereof from first water and air transit chambers, water flow and air stream to generate raised water and air pressures. Two valves are disposed respectively to be moved by the water and air pressures to block or permit entry of the water flow and the air stream into second water and air transit chambers. A mixing outlet is disposed downstream of and to merge water and air outlet ports of the second water and air transit chambers to obtain an accelerated stream of the air entrained water for cleaning teeth and gums.

REFERENCES:
patent: 4944676 (1990-07-01), Hu
patent: 5074787 (1991-12-01), Tsukada
patent: 5201899 (1993-04-01), Austin et al.
patent: 5556007 (1996-09-01), Breitsprecher
patent: 6179614 (2001-01-01), Elrod et al.
patent: 6612465 (2003-09-01), Pierson et al.
patent: 20030077552 (2003-04-01), Decosterd et al.

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