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US 5,957,445 AGranted
Ergonomic workholder with positional control
OwnerErland L. Hagman, Michael S. Valentineinventors
Life of this patent
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Abstract
A ball and socket workpiece holder is provided that may be locked to hold a workpiece in a predetermined position on a workholder arm. The workholder may be unlocked to permit the workholder arm and workpiece to rotate through a limited predetermined angle.
Claims3
A workholder device comprising:
- a base member;
- a cylindrical block having an opening through the upper portion thereof and an internal wall;
- means to secure said base member to said cylindrical block;
- lock pad means located within said cylindrical block;
- spherical ball means positioned on said block pad and extending through the upper opening of said cylindrical block;
- arm means secured to said spherical ball extending through said cylindrical block opening to receive a work piece;
- the internal wall of the cylindrical block having elongated arcuate depressions;
- and
- means secured to the spherical ball extending into said depressions to limit the rotation of the said arm means.
6 more elements
Dependencies are inferred from the claim text.