Caliper brake unit for hand trucks

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Description

FIG. 1 is a perspective view of a caliper brake unit for hand trucks showing my new design from the top and one end;

FIG. 2 is a perspective view thereof shown from the bottom and opposite end;

FIG. 3 is a perspective view of a second embodiment of the caliper brake apparatus for hand trucks showing my new design from the top and one end; and,

FIG. 4 is a perspective view of the embodiment of FIG. 3 shown from the bottom and opposite end.

Referenced Cited
U.S. Patent Documents
3231050 January 1966 Belyeu
3422930 January 1969 Barron
3486587 December 1969 Malloy
3566994 March 1971 Issacs
4264082 April 28, 1981 Fouchey, Jr.
4655466 April 7, 1987 Hanaoka
4767128 August 30, 1988 Terhune
4819767 April 11, 1989 Laird
5113977 May 19, 1992 Ridings et al.
Patent History
Patent number: D363052
Type: Grant
Filed: Nov 12, 1993
Date of Patent: Oct 10, 1995
Inventor: Oscar B. Laird (Houston, TX)
Primary Examiner: A. Hugo Word
Assistant Examiner: M. Brown
Attorney: Kenneth A. Roddy
Application Number: 0/15,248
Classifications
Current U.S. Class: Brake Element (D12/180); Element Or Attachment (D34/27)