Propane fired heater for defrosting frozen pipes or the like

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Description

FIG. 1 is a top, front, and left side perspective view of a propane fired heater for defrosting frozen pipes or the like, showing our new design;

FIG. 2 is a top plan view thereof on a reduced scale;

FIG. 3 is a right side elevation view thereof on a reduced scale;

FIG. 4 is a front elevation view thereof on a reduced scale;

FIG. 5 is a left side elevation view thereof on a reduced scale;

FIG. 6 is a rear elevation view thereof on a reduced scale; and

FIG. 7 is a bottom plan view thereof on a reduced scale.

Referenced Cited
U.S. Patent Documents
D196551 October 1963 Parsons et al.
D280760 September 24, 1985 Kogan
3189727 June 1965 Jepson et al.
3692977 September 1972 Duhamel et al.
4511787 April 16, 1985 Sibert
Patent History
Patent number: D315596
Type: Grant
Filed: Sep 21, 1988
Date of Patent: Mar 19, 1991
Inventors: Del Botheras (Sundre, Alberta), Wayne C. Colenutt (Sundre, Alberta)
Primary Examiner: James M. Gandy
Assistant Examiner: Lisa Lichtenstein
Law Firm: Davis, Bujold & Streck
Application Number: 7/247,304
Classifications
Current U.S. Class: Portable (D23/332)