Adjustable mandrel

Details Adjustable mandrel Adjustable mandrel

1986-10-06

1988-07-19

Wilson, John J.

Dentistry

Apparatus

Hand manipulatable implement

433 49, 433 75, 269244, 269247, A61C 300

Patent

active

047581590

ABSTRACT:
An adjustable mandrel for grasping and supporting a workpiece such as a dental retention device. The mandrel includes a stationary jaw having a body portion with a dependent grasping leg, and a movable jaw also having a body portion with a depending grasping leg. The two grasping legs are arranged to each other. A captured screw member is rotatably secured to the body portion of the stationary jaw with the body portion of the movable jaw threadingly receiving the screw member therethrough. A pair of guide rails maintain a parallel relationship between the stationary and movable jaws. As the screw member is rotated, the movable jaw moves into and out of engagement with the stationary jaw to grasp a workpiece with the grasping legs, where either external or internal surfaces of the workpiece can be grasped.

REFERENCES:
patent: 788716 (1905-05-01), Hammond et al.
patent: 1740238 (1929-12-01), Gustafson
patent: 2398941 (1946-04-01), Jordan
patent: 2716911 (1955-09-01), Focke
patent: 3580459 (1971-05-01), Gage et al.
patent: 3722098 (1973-03-01), Poveromo
patent: 4348181 (1982-09-01), Dawson

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