Dentistry – Apparatus – Having intra-oral dispensing means
Patent
1986-10-21
1988-02-23
Wilson, John J.
Dentistry
Apparatus
Having intra-oral dispensing means
A61C 504
Patent
active
047267690
ABSTRACT:
A dental appliance for introducing a filler material into a tooth cavity comprises a support, a filler pipe, a filler expelling element, and a removable magazine which accommodates a filler, and a mechanical transmission which couples the filler expelling element and the magazine expelling element with one another to provide coordination of their movements and includes a toothed rack connected with the magazine expelling element, an expelling lever which is turnably connected with a support and has a free end engaging in the toothed rack and expelling button 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 a front end of the filler expelling element reaches an end of the opening of the magazine into the filler pipe, a toothed pinion supported in the support, a rotary element connected with the toothed pinion for joint rotation therewith and having a first projection portion for displacing the expelling lever and thereby the toothed rack of the magazine expelling element and a second projection portion for displacing the filler expelling element, a toothed segment supported in the support and engaging with the toothed pinion, the expelling button being formed as a two-arm rotary slider turnably supported in the support and having one arm which is provided with a finger contact portion and extends beyond the support and another arm which has an end articulately engaging the toothed segment.
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Lynch Michael
Striker Michael J.
Wilson John J.
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