Heat trap

Description

FIG. 1 is a perspective view of a heat trap showing my new design;

FIG. 2 is a side elevation taken from the right of FIG. 1;

FIG. 3 is a side elevation taken from the left of FIG. 1;

FIG. 4 is a rear elevation;

FIG. 5 is a front elevation;

FIG. 6 is a top plan view taken from the top of FIG. 4; and,

FIG. 7 is a bottom plan view taken from the bottom of FIG. 5.

Referenced Cited
U.S. Patent Documents
28567 May 1860 Brinkman
474205 May 1892 Avery
1237144 August 1917 Allen
3251408 May 1966 Watson et al.
3877518 April 1975 Dreksler
4286573 September 1, 1981 Nickel
4964394 October 23, 1990 Treatt
Foreign Patent Documents
2016295 May 1989 CAX
Patent History
Patent number: D351899
Type: Grant
Filed: Mar 1, 1993
Date of Patent: Oct 25, 1994
Inventor: George M. Isber (Markham, Ontario)
Primary Examiner: A. Hugo Word
Assistant Examiner: Eric Watterson
Attorneys: Ivor M. Hughes, Neil H. Hughes, Marcelo K. Sarkis
Application Number: 0/5,272
Classifications
Current U.S. Class: Trap (D23/268)