Security trailer hitch ball

Description

FIG. 1 is a front elevational view of the security trailer hitch ball showing my new design;

FIG. 2 is a rear elevational view thereof;

FIG. 3 is a left side elevational view thereof;

FIG. 4 is a right side elevational view thereof;

FIG. 5 is a top plan view thereof; and,

FIG. 6 is a bottom plan view thereof.

Referenced Cited
U.S. Patent Documents
3393924 July 1968 Silver
3410580 November 1968 Longenecker
4248450 February 3, 1981 McNethy
4542914 September 24, 1985 Shropsfere
4889356 December 26, 1989 Morris
5085452 February 4, 1992 Janeiro
Patent History
Patent number: D342472
Type: Grant
Filed: Oct 7, 1992
Date of Patent: Dec 21, 1993
Inventor: Gregory L. Harper (Collierville, TN)
Primary Examiner: Wallace R. Burke
Assistant Examiner: Melody Brown
Attorney: Hugh E. Smith
Application Number: 0/150
Classifications