Device for shutting off suction generated through the single tub

Details Device for shutting off suction generated through the single tub Device for shutting off suction generated through the single tub

1987-06-05

1988-11-29

Wilson, John J.

Dentistry

Apparatus

Having suction orifice

433 28, A61C 1704

Patent

active

047878460

ABSTRACT:
The invention relates to a device for shutting off suction generated through the single tubes of dental surgery equipment, which comprises a rotary mechanical obturator (5) located in the grip (1) of the suction tube (2) and attached to a pin (3) that engages in a helical groove (6) offered by the holder (4) in which the grip is replaced whenever the tube is not in use. Pin and obturator rotate as one between an open position and a closed position, the obturator being biased permanently toward the open position by a coil spring (7).

REFERENCES:
patent: 3232578 (1966-02-01), Cousins
patent: 3476144 (1969-11-01), Krantz
patent: 3645497 (1972-02-01), Nyboer
patent: 4212300 (1980-07-01), Meals
patent: 4226590 (1980-10-01), Hofmann
patent: 4340368 (1982-07-01), Lococo

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