Backflow prevention sink
United States Patent D544073
US Patent References:
Air gap mounting sink for a backflow prevention device
DeGarmo - May, 2005 - 20050098212

Air gap mounting sink for a backflow prevention device
DeGarmo - October, 2003 - 20030188779

High pressure hose drop backflow/back siphonage preventers
Nolan - June, 2002 - 6397878

Backflow preventer assembly
Horne et al. - February, 2000 - 6021805

Universal pipe bracket
Ismert - March, 1999 - 5876000


Inventors:
Degarmo, Craig (Jamesville, WI, US)
Application Number:
D/244839
Publication Date:
06/05/2007
Filing Date:
12/14/2005
Export Citation:
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Assignee:
DeGarmo Plumbing, Inc. (Janesville, WI, US)
Primary Class:
D23/284
International Classes:
(IPC1-7): 2302
Field of Search:
4/630, D23/270-271, D23/308, D23/284-287, D21/524, 4/DIG.15, D23/291, D23/303, 4/619, 4/661, 4/624-625, D23/273, D23/293.1
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US Patent References:
D382332SinkAugust, 1997SchwartzD23/284
5649681Drain trough mounting apparatus and method of manufacturing sameJuly, 1997Faye
5392803Apparatus and method for installing valvesFebruary, 1995Bruce
5217038Apparatus for emptying a hazardous waste containerJune, 1993Pinder
4991655Combined alarm and back-flow prevention arrangement for fire suppression sprinkler systemFebruary, 1991McHugh
4856559Faucet providing and utilizing air gapAugust, 1989Lipshultz et al.
D285522Portable collapsible combination sink and stoveSeptember, 1986BasiniD23/272
4440185Support stand for a food slicerApril, 1984Wiltse134/115R
D255923SinkJuly, 1980RosenkranzD23/284
D243182Combination vanity and lavatoryJanuary, 1977Seymour et al.D23/286
Other References:
Picture illustrating general subject matter of a unit installed more than one year prior to the filing date of this application (Apr. 9, 2002).
Primary Examiner:
Delehanty, Robert A.
Attorney, Agent or Firm:
Peterson, Jeffrey D.
Michael Best & Friedrich LLP
Claims:
CLAIM

1. The ornamental design for a backflow prevention sink, as shown and described.

Description:

FIG. 1 is a front perspective view of the backflow prevention sink.

FIG. 2 is a front view of the backflow prevention sink.

FIG. 3 is a bottom view of the backflow prevention sink; and,

FIG. 4 is a side view of the backflow prevention sink.

The present application is directed to the design illustrated in the drawings. The broken line portions of the disclosure are for illustrative purposes only and form no part of the claimed design.