The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 04, 2005
Filed:
Apr. 29, 2002
Chien-liang Chen, Taipei City, TW;
Chien-chuan Chen, Taipei City, TW;
I-chun Chen, Taipei City, TW;
Other;
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.