PEN-LIKE DISPENSER FOR A DENTAL MATERIAL

摘要

A pen-like dispenser for dispensing a dental material has a handle and a cover which are attached for rotation relative to each other about a longitudinal axis of the dispenser, and a cartridge for holding the dental material and a screw plunger for extruding the dental material from the cartridge by screwing action. The cartridge and the cover in combination form a rotary slide valve which is operable by rotation about the longitudinal axis between a storage position, in which the cover closes a dispensing outlet of the cartridge, and a dispensing position, in which an opening in the cover opens the dispensing outlet of the cartridge. A relative rotation between the screw plunger and the handle about the longitudinal axis is restricted, and a relative rotation between the cartridge and the cover about the longitudinal axis is enabled within a predetermined rotation angle and restricted otherwise.

主权项

1. A pen-like dispenser for dispensing a dental material, comprising:
a handle and a cover which are rotatable relative to each other about a longitudinal axis of the dispenser; the cover having an opening; the dispenser further comprising: a cartridge for holding the dental material and having a dispensing outlet for the dental material, a screw plunger for extruding the dental material from the cartridge by screwing action; the cartridge and the cover in combination forming a rotary slide valve which is operable by rotation about the longitudinal axis between a storage position, in which the cover closes the dispensing outlet of the cartridge, and a dispensing position, in which the opening in the cover opens the dispensing outlet of the cartridge; wherein a relative rotation between the screw plunger and the handle about the longitudinal axis is restricted and wherein a relative rotation between the cartridge and the cover about the longitudinal axis is enabled within a predetermined rotation angle and restricted otherwise.