Explosion-proof housing for electrical circuit components

- Sentrol, Inc.
Description

FIG. 1 is a pictorial view of an explosion-proof housing for electrical circuit components embodying our new design, as seen from the lower right front;

FIG. 2 is a pictorial view thereof as seen from the upper right rear;

FIG. 3 is a bottom view thereof, at a reduced scale;

FIG. 4 is a top plan view thereof, at a reduced scale;

FIG. 5 is a front edge elevational view thereof, at a reduced scale;

FIG. 6 is a rear edge elevational view thereof, at a reduced scale; and

FIG. 7 is an end elevational view thereof, at a reduced scale.

Referenced Cited
U.S. Patent Documents
1909136 May 1933 Thomas, Jr.
3693089 September 1972 Hutchinson et al.
3895179 July 1975 Wyatt
4063110 December 13, 1977 Glick
4213018 July 15, 1980 Piston
4328903 May 11, 1982 Baars
Patent History
Patent number: D273783
Type: Grant
Filed: Apr 20, 1981
Date of Patent: May 8, 1984
Assignee: Sentrol, Inc. (Portland, OR)
Inventors: Thomas J. Holce (Portland, OR), Charles M. Huckins (Tigard, OR)
Primary Examiner: Wallace R. Burke
Assistant Examiner: Lynn Wilder
Law Firm: Chernoff, Vilhauer, McClung, Birdwell & Stenzel
Application Number: 6/255,567
Classifications
Current U.S. Class: D13/40