Dental washer
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Dec 31, 1991
Grant Date -
N/A
app pub date -
May 10, 1990
filing date -
Jun 2, 1989
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A dental washer includes a heating vessel for heating a washing liquid by an electrical heater to generate superheated steam, so electromagnetic pump on a water supply pipe communicating with the heating vessel and a water source, an electromagnetic valve in a steam pipe having at its one end a nozzle for outputting steam and communicating with the nozzle and a superheated steam-filling region of the heating vessel and a level detector for detecting the level of the washing liquid in the heating vessel to turn the electrical heater on when the level reaches the preset upper limit and turn it off when the level reaches the preset lower limit. The dental washer further includes an initial valve-opening circuit energized upon a main switch turned on to hold the electromagnetic valve open, a valve-closing circuit for holding the electromagnetic valve closed in response to a signal from the level detector when the level of the washing liquid in the heating vessel reaches the preset upper limit and keeping it closed, and a manual valve-controlling switch for steam which holds open or closed the electromagnetic valve held closed by the valve-closing circuit.
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