Simplified valve actuating device for dental equipment

Details Simplified valve actuating device for dental equipment Simplified valve actuating device for dental equipment

1998-07-28

1999-11-02

Wilson, John J.

Dentistry

Apparatus

Including activator or regulator for controller or drive

433101, A61C 102

Patent

active

059758988

ABSTRACT:
A pneumatically operated, simplified valve actuating device for dental equipment, the valve being capable of avoiding an undesirable dripping of dental instruments at the end of the work. The device includes a valve actuating element identified in a four-way valve, whose body includes a housing for a piston connected to a bobbin, wherein said casing is on one side connected to a selector unit and on the other side to a one-way retention valve, capable of receiving pressurized air from a reducer unit and passing it from said selector unit to a constantly pressurized air line coming directly from said reducer unit and to at least one dental instrument.

REFERENCES:
patent: 3474816 (1969-10-01), Burgess
patent: 3476153 (1969-11-01), Roland
patent: 4201051 (1980-05-01), Hall
patent: 4304251 (1981-12-01), Schadel et al.
patent: 4443195 (1984-04-01), Matsui
patent: 4450862 (1984-05-01), Hogan
patent: 4797098 (1989-01-01), Kawata
patent: 4894010 (1990-01-01), Castellini
patent: 5074787 (1991-12-01), Tsukada
patent: 5800170 (1998-09-01), Tsukada

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