Device for dispensing a flowable substance
First Claim
1. A device for dispensing a flowable substance, comprisinga cartridge for receiving the substance, said cartridge having a front end and a rear end and defining an axis, said cartridge including a dispensing piston, a dispensing nozzle connected to said front end and having a dispensing and extending at an angle with respect to said axis, and a prismatic flange provided at said rear end, andan applicator including a piston rod for advancing said dispensing piston in said cartridge and a receiving portion for receiving said flange, said receiving portion having a cross-sectional shape other than circular, the smallest diametric dimension of said receiving portion having a value between the smallest and the largest diametric dimension of said prismatic flange,wherein the material of at least one of said flange and receiving portion is resilient so as to permit stepwise rotation of said cartridge relative to said applicator.
2 Assignments
0 Petitions
Accused Products
Abstract
A device suited for dispensing a dental substance comprises a cartridge 20or receiving the substance, with a curved dispensing nozzle 22 disposed at the front end and a flange 21 of octagonal cross-section provided at the rear end of the cartridge. The flange 21 serves to engage a slide-in socket 16 of an applicator 10 which includes a piston rod 12 for advancing a dispensing piston 23 disposed in the cartridge 20. In the retracted position of the piston rod 12, the cartridge 20 may be laterally inserted into the slide-in socket 16 of the applicator 10. The socket has two parallel walls spaced by a distance which is between the largest and the smallest diameter of the octagonal flange 21. The material of the flange 21 and/or the material forming the slide-in socket 16 is resilient so that the cartridge 20 may be stepwise rotated about the axis of the piston rod 12 with respect to the applicator 10 without requiring the piston rod 12 to be withdrawn and the cartridge 20 to be removed from the slide-in socket and re-inserted in a new orientation.
26 Citations
8 Claims
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1. A device for dispensing a flowable substance, comprising
a cartridge for receiving the substance, said cartridge having a front end and a rear end and defining an axis, said cartridge including a dispensing piston, a dispensing nozzle connected to said front end and having a dispensing and extending at an angle with respect to said axis, and a prismatic flange provided at said rear end, and an applicator including a piston rod for advancing said dispensing piston in said cartridge and a receiving portion for receiving said flange, said receiving portion having a cross-sectional shape other than circular, the smallest diametric dimension of said receiving portion having a value between the smallest and the largest diametric dimension of said prismatic flange, wherein the material of at least one of said flange and receiving portion is resilient so as to permit stepwise rotation of said cartridge relative to said applicator.
Specification