Combustion air vent with top and bottom retainers

Skip to: Description  ·  Claims  ·  References Cited  · Patent History  ·  Patent History

FIG. 1 is an exploded view illustrating the components of my combustion air vent with top and bottom retainers;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a top view thereof;

FIG. 4 is a rear elevation view thereof, with the rears of the louvers partially shown to more clearly illustrate the screen.

FIG. 5 is a bottom view thereof;

FIG. 6 is a right side elevational view thereof; and,

FIG. 7 is a left side elevational view thereof.


The ornamental design for a combustion air vent with top and bottom retainers, as shown and described.

Referenced Cited
U.S. Patent Documents
D108821 March 1938 Pineau
2949842 August 1960 Crandall
D222724 December 1971 Zampetti et al.
D247947 May 23, 1978 Noll
D492401 June 29, 2004 Achen
D493880 August 3, 2004 Achen
D494669 August 17, 2004 Achen
D507048 July 5, 2005 Achen
D520626 May 9, 2006 Angers et al.
D521630 May 23, 2006 Achen
D526402 August 8, 2006 Achen
D576723 September 9, 2008 Achen
D582029 December 2, 2008 Achen
Patent History
Patent number: D616976
Type: Grant
Filed: Nov 4, 2009
Date of Patent: Jun 1, 2010
Inventor: John J. Achen (Yuma, AZ)
Primary Examiner: T. Chase Nelson
Assistant Examiner: David G Muller
Attorney: The von Hellens Law Firm, Ltd.
Application Number: 29/346,669
Current U.S. Class: Register Or Diffuser (D23/388)