Device for preventing the ingress of water into the head of a de

Details Device for preventing the ingress of water into the head of a de Device for preventing the ingress of water into the head of a de

1981-04-22

1983-01-18

Peshock, Robert

Dentistry

Apparatus

Having motor or means to transmit motion from motor to tool

A61C 105

Patent

active

043690343

ABSTRACT:
This device for preventing the ingress of water into the head of a dental contra-angle comprises a ring seal of cylindrical configuration adapted to be inserted through a hole formed in the bottom wall of the head body for the passage of the dental tool. This ring seal comprises at one end a flange having a diameter greater than the diameter of the passage hole and at its opposite end a bead also of greater diameter than the hole but adapted to be compressed when inserting the ring seal through the hole.

REFERENCES:
patent: 2134302 (1938-10-01), Hauschalter
patent: 3542372 (1970-11-01), Edwardson

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