Tetrahedral negative universal joint block

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Description

FIG. 1 is a perspective view of a tetrahedral negative universal jolnt block, showing our new design;

FIG. 2 is a top plan view thereof, showing the vertical and horizontal symmetry of the design;

FIG. 3 is a bottom plan view thereof, which is a mirror image of the front elevation view;

FIG. 4 is a front elevation view thereof;

FIG. 5 is a back elevation view thereof, which because of the vertical and horizontal symmetry of the design, is a mirror image of the front elevation view;

FIG. 6 is a left side elevation view thereof, which because of the vertical and horizontal symmetry of the design, is a rotation from the front elevation view; and,

FIG. 7 is a right side elevation view thereof, which because of the vertical and horizontal symmetry of the design, is a mirror image of the left side elevation view.

Claims

The ornamental design for a tetrahedral negative universal joint block, as shown and described.

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Patent History
Patent number: D800227
Type: Grant
Filed: Dec 2, 2016
Date of Patent: Oct 17, 2017
Assignee: (Chicago, IL)
Inventor: T. Dashon Howard (Chicago, IL)
Primary Examiner: Cynthia M Chin
Application Number: 29/586,322
Classifications
Current U.S. Class: Curved Or Folded (D21/492)