Rail insulator

Description

FIG. 1 is a front elevational view of a rail insulator showing my new design;

FIG. 2 is a rear elevational view thereof;

FIG. 3 is a perspective view thereof;

FIG. 4 is a top plan view thereof; and,

FIG. 5 is a bottom plan view thereof.

Referenced Cited
U.S. Patent Documents
1868992 July 1932 Re Qua
2853775 September 1958 Drake
2885153 May 1959 Bartley
3067947 December 1962 Deenik et al.
3389859 June 1968 Groff
3666175 May 1972 Gill
Patent History
Patent number: D302409
Type: Grant
Filed: Dec 15, 1986
Date of Patent: Jul 25, 1989
Inventor: John K. Martin (Calgary, Alberta, T2V 4V3)
Primary Examiner: Wallace R. Burke
Assistant Examiner: Kay H. Chin
Attorney: Harold H. Dutton, Jr.
Application Number: 6/941,953
Classifications