Stretch block assembly

Description

FIG. 1 is a front elevational view of a stretch block assembly, showing my new design;

FIG. 2 is a left side elevational view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a right side elevational view thereof;

FIG. 5 is a rear elevational view thereof, showing the upper portion of the design in a separated condition and the lower portion in an open condition;

FIG. 6 is a rear elevational view thereof; and

FIG. 7 is a perspective view of the design with the top and bottom elements thereof in a separated condition.

Referenced Cited
U.S. Patent Documents
3598404 August 1971 Bowman
4253661 March 3, 1981 Russell
4526365 July 2, 1985 Ziegelbaum
4561649 December 31, 1985 Forsythe
4603851 August 5, 1986 Russell
Foreign Patent Documents
2031742 April 1980 GBX
Patent History
Patent number: D302450
Type: Grant
Filed: Dec 29, 1986
Date of Patent: Jul 25, 1989
Inventors: Aaron Zutler (Woodbury, NY), Bruce Zutler (Plainview, NY), Schuyler Proctor (New Canaan, CT)
Primary Examiner: Charles A. Rademaker
Attorney: Edward H. Loveman
Application Number: 6/947,540
Classifications
Current U.S. Class: D21/191