Dispensing cartridge with stepped chamber

Details Dispensing cartridge with stepped chamber Dispensing cartridge with stepped chamber

1999-01-29

2000-08-01

Mancene, Gene

Dentistry

Apparatus

Having intra-oral dispensing means

604232, 604 2, 222137, A61C 504

Patent

active

060958146

ABSTRACT:
A dispensing cartridge for use with a hand-held applicator has a chamber with a first section and a second section. The second section has a smaller cross-sectional area than the first section such that the chamber has a stepped configuration. A piston is slidably received in the chamber and has a head portion that is received in the second section and a tail portion that is received in the first section. As a force is applied to the tail portion, the head portion advances to expel material through an outlet opening. The cartridge is especially useful for dispensing compositions having a relatively high viscosity such as dental pastes and the like.

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