Dentistry – Apparatus – Having intra-oral dispensing means
Patent
1986-09-11
1988-09-06
Wilson, John J.
Dentistry
Apparatus
Having intra-oral dispensing means
433 90, A61C 504
Patent
active
047689552
ABSTRACT:
A dental appliance for introducing a filler material into a tooth cavity, comprises a support, a filler pipe, units forming a first passage, a filler expelling element reciprocatingly movable in the first passage, the filler expelling element merging into the filler pipe and having a front end, a removable magazine which accommodates a filler a plurality of parts of which can be expelled therefrom, the magazine extending transversely to the filler pipe and opening into the latter, the magazine having an inlet opening which opens into the filler pipe and is provided with an upper edge, a second passage, a magazine expelling element guided in the second passage for pressing a portion of the filler from the magazine into the filler pipe, the filler expelling element and the magazine expelling element being surrounded by the support, and a mechanical transmission unit which couple the filler expelling element and the magazine expelling element with one another to provide coordination of their movements, the transmission unit including a toothed rack which is connected with the magazine expelling element, an expelling lever which is turnably connected with the support and having a free end engaging in the toothed rack and expelling button which is actuatable by a finger and connected with the filler expelling element, and a projection, the lever being arranged so that during the working stroke it displaces with the toothed rack via the expelling button and the projection in direction toward the filler pipe before the front end of the filler expelling element reaches the upper end of the opening of the magazine into the filler pipe.
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Lynch Michael
Striker Michael J.
Wilson John J.
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