Portable extension ramp

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Description

FIG. 1 is a front perspective view of a portable extension ramp showing my new design, the broken lines are for illustrative purposes only and form no part of the claimed design;

FIG. 2 is a right side elevational view thereof, showing the ramp in fully closed condition;

FIG. 3 is an enlarged front elevational view thereof;

FIG. 4 is an enlarged rear elevational view thereof;

FIG. 5 is an enlarged right side elevational view thereof, showing the ramp in fully extended condition;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view thereof.

Referenced Cited
U.S. Patent Documents
3511393 May 1970 Abromavage et al.
3870170 March 1975 Noble et al.
4235370 November 25, 1980 Newby
4528711 July 16, 1985 Packer
Foreign Patent Documents
255065 November 1970 SUX
Patent History
Patent number: D300073
Type: Grant
Filed: Feb 10, 1986
Date of Patent: Feb 28, 1989
Inventor: Robert F. Crump (Louisville, KY)
Primary Examiner: Wallace R. Burke
Assistant Examiner: Kay H. Chin
Attorney: Scott R. Cox
Application Number: 6/827,727
Classifications
Current U.S. Class: Ramp (D34/32)