Dentistry – Apparatus – Having static product shaping surface
Patent
1987-03-12
1988-01-19
Peshock, Robert
Dentistry
Apparatus
Having static product shaping surface
A61C 504
Patent
active
047202645
ABSTRACT:
A winding tool for winding a coil of a retainerless dental matrix comprising a rotatable handle having a handle bore therethrough. A nonrotatable palm grip is mounted on a shaft for axial movement into the handle. A barrel having a torque transmitting mechanism is mounted for rotation and for axial movement in the handle. The torque limiting mechanism is transmitted and interengages the barrel to the handle for transmitting limited torque applied by rotating the handle for rotating the barrel and activating said torque limitor which rotates. A bent flexible sleeve which is fixed to an end of the barrel. A winding head is fixed to a remote end of the flexible sleeve. A compression transmitting shaft having a bent end extending into the bent flexible sleeve for retaining the bent shape thereof extends through the barrel and into the palm grip where it is fixed against rotation with the palm grip. A biasing spring which forms a part of the torque transmitting mechanism is compressed by the shaft which yieldingly permits the barrel and torque transmitting mechanism to be rotated over the shaft without requiring rotation of the shaft. The winding head also has a truncated conical shape and deep flutes having cutting edges for engaging the coil of the retainerless dental matrix.
REFERENCES:
patent: 3411214 (1968-11-01), Lazarus
patent: 3852884 (1974-10-01), Lazarus
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