A - Human Necessities – 61 – C
Patent
A - Human Necessities
61
C
83/4
A61C 19/02 (2006.01) A61C 17/00 (2006.01)
Patent
CA 1132813
Docket No. U003-7915/REB TITLE OF THE INVENTION: Device In Dental Suction Apparatus For Connecting And Holding Suction Nozzle Tubes and/or For Filtering ABSTRACT OF THE DISCLOSURE Dental suction apparatus is a modular construction, compris ing a plurality of modules joined fluid-tight side-by-side. A main suction duct extends through all of the modules. At least two of the modules have connection for suction hoses each having a suction nozzle, means being provided on the modules for holding the suction nozzles when not in use. At least one module comprises a filter chamber connected between a suction tube and the main suction duct. A removable filter unit in the filter chamber comprises a basket- shaped filter on a stem by means of which the filter can be removed through on opening closed by a hinged cover. A cap on the stem pro- vides a seal for the filter chamber. Flow of air from the suction tube of each suction tube module to the main suction duct is controlled by a valve in the form of a bellows provided with a telescopic guide and with control valve means for controlling the expansion and contraction of the bellows by differential pressure. -1-
299854
Durr - Dental Kg.
Kirby Eades Gale Baker
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