Optical emitter for use in priority traffic control

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Description

FIG. 1 is a perspective view of an optical emitter for use in priority traffic control from the front, top and side showing a first embodiment of my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a side elevational view, the side opposite that shown being a mirror image thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a top plan view thereof;

FIG. 6 is a bottom plan view thereof;

FIG. 7 is a perspective view as seen from the front, top and side of a second embodiment of my new design;

FIG. 8 is a front elevational view thereof;

FIG. 9 is a side elevational view, the side opposite that shown being a mirror image thereof;

FIG. 10 is a rear elevational view thereof;

FIG. 11 is a top plan view thereof; and,

FIG. 12 is a bottom plan view thereof.

Referenced Cited
U.S. Patent Documents
D224759 September 1972 Bingham
3550078 December 1970 Long
3881169 April 1975 Malach
4017825 April 12, 1977 Pickey
4115757 September 19, 1978 Blahunka
4775865 October 4, 1988 Smith et al.
Patent History
Patent number: D338165
Type: Grant
Filed: Sep 6, 1991
Date of Patent: Aug 10, 1993
Assignee: Minnesota Mining and Manufacturing Company (St. Paul, MN)
Inventors: George A. Gregori (New Brighton, MN), Perry S. Dotterman (Maplewood, MN)
Primary Examiner: Wallace R. Burke
Assistant Examiner: Marcus Jackson
Attorneys: Gary L. Griswold, Walter N. Kirn, William B. Barte
Application Number: 7/756,082
Classifications
Current U.S. Class: D10/104