Exhalation valve filter

Description

FIG. 1 is a perspective view, showing the new design for an exhalation valve filter; the filter is in the form of a nonwoven fibrous web and covers the exhalation valve on a respiratory mask;

FIG. 2 is a rear view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a bottom view thereof;

FIG. 5 is a top view thereof; and,

FIG. 6 is a right side view thereof, the left side view being a mirror image of the right side view.

The broken line showing forms no part of the claimed design, and the shading is provided to illustrate contour only and is not an indication of texture, gloss, etc.

Claims

CLAIM The ornamental design for an exhalation valve filter, as shown and described.

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Inventors:	Scott; Chris W. (County Durham, GB), Parkin; Derek A. (County Durham, GB), Curtis; Abigail L. (Hartlepool, GB), Coote; Lawrie D. (Berkshire, GB)
Assignee:	3M Innovative Properties Company (St. Paul, MN)
Appl. No.:	D/233,287
Filed:	June 30, 2005

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Current U.S. Class:	D24/110.6; D24/110.1
Current International Class:	2902
Field of Search:	;D24/110.6,110.4,110.1,110.3 ;128/201.28,201.22,201.25,206.12,206.19,206.14,206.24,205.24,205.25,207.12

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References Cited [Referenced By]

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U.S. Patent Documents

D347298	May 1994	Japuntich et al.
5829433	November 1998	Shigematsu et al.
D413166	August 1999	Snow et al.
6047698	April 2000	Magidson et al.
D431647	October 2000	Henderson et al.
D449377	October 2001	Henderson et al.
D458364	June 2002	Curran et al.
RE37974	February 2003	Bowers
6584976	July 2003	Japuntich et al.
6805124	October 2004	Japuntich et al.

Other References

US. Appl. No. 29/233,288 to Parkin et al., filed Jun. 30, 2005 entitled Frame That Supports An Exhalation Valve Filter. cited by other.

Primary Examiner: Simmons; Ian
Assistant Examiner: Lee; Christopher
Attorney, Agent or Firm: Hanson; Karl G.