Air outlet for round duct

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Description

FIG. 1 is a perspective view of an air outlet for round duct showing my new design;

FIG. 2 is a top view thereof;

FIG. 3 is a left side view thereof, the right side being the same as the side shown;

FIG. 4 is a bottom view thereof; and

FIG. 5 is an end view thereof.

Referenced Cited
U.S. Patent Documents
3422888 January 1969 Coleman et al.
3895567 July 1975 Paul
3916772 November 1975 Lindestrom et al.
3918354 November 1975 Lambert
Foreign Patent Documents
158194 November 1954 NLX
Patent History
Patent number: D251439
Type: Grant
Filed: Dec 27, 1976
Date of Patent: Mar 27, 1979
Assignee: RSC Air Conditioning Service, Inc. (San Jose, CA)
Inventor: Kenneth R. Petro (San Martin, CA)
Primary Examiner: James R. Largen
Attorney: Thomas E. Schatzel
Application Number: 5/754,179
Classifications
Current U.S. Class: D23/163
International Classification: D2304;