Dispensing – With discharge assistant – Insertable cartridge or removable container
Patent
1997-11-07
1999-07-27
Deraksham, Philippe
Dispensing
With discharge assistant
Insertable cartridge or removable container
222386, 222533, 433 90, A61C 504
Patent
active
059275626
ABSTRACT:
A device suited for dispensing a dental substance comprises a cartridge 20 or 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rotated about the axis of the piston rod 12 with respect to the applicator 10 without requiring the piston rod 12 to be withdrawn and the cartridge 20 to be removed from the slide-in socket and re-inserted in a new orientation.
REFERENCES:
patent: 4295828 (1981-10-01), Rudler
patent: 4330280 (1982-05-01), Dougherty et al.
patent: 4813871 (1989-03-01), Friedman
patent: 5022563 (1991-06-01), Marchitto et al.
patent: 5129825 (1992-07-01), Discko, Jr.
patent: 5722830 (1998-03-01), Brandhorst et al.
patent: 5749498 (1998-05-01), Lavoie et al.
Brandhorst Gerd
Hammen Klaus
Deraksham Philippe
Thera Patent GmbH & Co. KG Gesellschaft Fuer Industrielle Schutz
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