Device for supplying plastic material for denture base and flask with the same
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United States of America Patent
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Dec 29, 1992
Issued Date -
N/A
app pub date -
Sep 24, 1991
filing date -
Nov 24, 1988
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A device for supplying plastic material into a flask under pressure and a flask with the device, which are used for preparation of a denture. The device includes a cylinder having the inside end communicated to a cavity in the flask, a piston slidably inserted in the cylinder, a spring urging the piston toward inside of the flask, a stopper restricting the outside stroke end of the piston, and a device for adjusting elastic force of the spring. The adjusting device preferably includes a spring receiver abutting against the outside end of the spring, a screw-mechanism for moving the spring receiver in the axial direction of the cylinder, and a handle member for operating the screw-mechanism.
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