Device and process for spraying dental molding compound

Details Device and process for spraying dental molding compound Device and process for spraying dental molding compound

1990-08-13

1991-10-22

Wilson, John J.

Dentistry

Apparatus

Having intra-oral dispensing means

A61C 302

Patent

active

050591215

ABSTRACT:
The device for spraying on a dental impression compound consists of a cylindrical handpiece (1) with a cartridge (5), situated inside it, for the provision of the impression compound, a curved and conically tapering headpiece (3), which can be mounted on the handpiece (1) by means of a bayonet joint or screw joint (2) and has a likewise conically tapering tubular cross-section (4), and a spray nozzle which is arranged on the headpiece (3) and designed as a two-phase nozzle (9, 10, 14). The supply of the impression compound to the spray nozzle takes place by means of an elastic hosepiece (7), at the front (distal) end of which a conical or pyramidal nozzle member (9) is arranged, which has air escape openings (11). At the same time the diameter of the nozzle member (9) must be greater than the smallest diameter of the conical tubular cross-section (4). The length of the elastic hosepiece (7) is dimensioned in such a manner that it is slightly compressed when the headpiece (3 ) is mounted, so that the nozzle member base (12) is pressed with its external periphery against the conical internal contour (4) of the headpiece (3).

REFERENCES:
patent: 4540365 (1985-09-01), Nelson et al.
patent: 4696644 (1987-09-01), Goof
patent: 4696645 (1987-09-01), Saupe et al.
patent: 4820152 (1989-04-01), Warrin et al.

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