Applicator for a dental compound
First Claim
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1. An applicator for a dental compound comprising:
- an elongated implement body having mounting means at the front end thereof for connecting thereto a dental compound syringe containing a plunger;
a pusher rod protruding out of the rear end of said body, a first rack member connected to the pusher rod;
a ram within said body for advancing the syringe plunger, a second rack member connected to the ram; and
gear reduction means drivably interconnecting said first and second rack members whereby driving movement of said pusher rod and first rack member drivably actuates said second rack member and ram at a reduced speed for controlled actuation of the syringe plunger.
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Abstract
Applicator for a dental compound, whose elongate implement body (1, 2) is or can be connected at the front end (3) to a syringe (4) containing the dental compound and has a ram (5) for advancing a plunger contained in the syringe (4), which plunger can be pushed forward by means of a pusher rod (10) protruding out of the rear end of the implement body (1). To avoid the stick-slip effect, the ram and the pusher rod (10) are each connected to a rack (6, 9), between which racks a gearwheel/pinion pair is arranged, which brings about a gear reduction from the pusher rod to the ram.
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Citations
8 Claims
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1. An applicator for a dental compound comprising:
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an elongated implement body having mounting means at the front end thereof for connecting thereto a dental compound syringe containing a plunger; a pusher rod protruding out of the rear end of said body, a first rack member connected to the pusher rod; a ram within said body for advancing the syringe plunger, a second rack member connected to the ram; and gear reduction means drivably interconnecting said first and second rack members whereby driving movement of said pusher rod and first rack member drivably actuates said second rack member and ram at a reduced speed for controlled actuation of the syringe plunger. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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Specification