Respirator support structure

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Description

FIG. 1 is a perspective view, showing the new design for a respirator support structure;

FIG. 2 is a right side view thereof, the left side being a mirror image of the right side view;

FIG. 3 is a front view thereof;

FIG. 4 is a top view thereof;

FIG. 5 is an rear view thereof;

FIG. 6 is a bottom view thereof; and,

FIG. 7 is a perspective view thereof, showing the respirator support structure attached to a respirator mask body.

The broken line showing is included for the purpose of illustrating environmental structure and forms no part of the claimed design.

Claims

The ornamental design for a respirator support structure, as shown and described.

Referenced Cited
U.S. Patent Documents
D421299 February 29, 2000 Brostrom et al.
D421801 March 21, 2000 Brostrom et al.
D440301 April 10, 2001 Fecteau
6338342 January 15, 2002 Fecteau
D471627 March 11, 2003 Mittelstadt
6536435 March 25, 2003 Fecteau
D473937 April 29, 2003 Fecteau
D518571 April 4, 2006 Martin
D568986 May 13, 2008 Holmquist-Brown
D569969 May 27, 2008 Lin
D570474 June 3, 2008 Lin
D582546 December 9, 2008 Fujiura
D629885 December 28, 2010 Skulley et al.
20020078953 June 27, 2002 Fecteau
Foreign Patent Documents
2073735 October 1981 GB
Patent History
Patent number: D690415
Type: Grant
Filed: Jul 2, 2012
Date of Patent: Sep 24, 2013
Assignee: 3M Innovative Properties Company (St. Paul, MN)
Inventors: William A. Mittelstadt (Woodbury, MN), Nathan A. Abel (Minneapolis, MN)
Primary Examiner: Ian Simmons
Assistant Examiner: Richelle Shelton
Application Number: 29/426,194
Classifications
Current U.S. Class: Mask (D24/110.1)