Patent
   D347298
Priority
Oct 13 1992
Filed
Oct 13 1992
Issued
May 24 1994
Expiry
May 24 2008
Assg.orig
Entity
unknown
23
0
n/a
The ornamental design for a valve cover, as shown and described.

FIG. 1 is a perspective view of a valve cover showing our new design. The broken line showing of FIG. 1 is for illustrative purposes only and forms no part of the claimed design; it being understood that filtering face masks of other configurations may be used in conjunction with the valve cover of this invention;

FIG. 2 is a top view thereof;

FIG. 3 is a left side elevational view thereof; the right side elevational view being the same;

FIG. 4 is a bottom view thereof;

FIG. 5 is a rear elevational view thereof; and,

FIG. 6 is a front elevational view thereof.

Byram, David C., Steffen, James E., Japuntich, Daniel A.

Patent Priority Assignee Title
10137321, Oct 28 2015 3M Innovative Properties Company Filtering face-piece respirator having an integrally-joined exhalation valve
11877604, May 03 2007 3M Innovative Properties Company Maintenance-free respirator that has concave portions on opposing sides of mask top section
11904191, May 03 2007 3M Innovative Properties Company Anti-fog respirator
6460539, Sep 21 2000 3M Innovative Properties Company Respirator that includes an integral filter element, an exhalation valve, and impactor element
8757156, Nov 27 2007 3M Innovative Properties Company Face mask with unidirectional multi-flap valve
9642403, Aug 16 2007 Kimberly-Clark Worldwide, Inc Strap fastening system for a disposable respirator providing improved donning
D389239, Aug 19 1996 Moldex-Metric, Inc. Valve
D413166, Mar 02 1998 Louis M. Gerson Co., Inc. Face mask breathing valve
D424688, Sep 06 1996 3M Innovative Properties Company Respiratory protection mask
D431647, Sep 06 1996 3M Innovative Properties Company Personal respiratory protection device having an exhalation valve
D546942, Apr 01 2004 3M Innovative Properties Company Exhalation valve filter
D550837, Jun 30 2005 3M Innovative Properties Company Frame that supports an exhalation valve filter
D575390, Jun 30 2005 3M Innovative Properties Company Exhalation valve filter
D746439, Dec 30 2013 Kimberly-Clark Worldwide, Inc Combination valve and buckle set for disposable respirators
D760380, May 08 2014 ST ENGINEERING INNOSPARKS PTE LTD ; ST ENGINEERING PTE LTD Child active venting system for disposable respirator
D827811, Sep 16 2016 3M Innovative Properties Company Valve cover
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D828546, Sep 16 2016 3M Innovative Properties Company Valve cover with openings
D842983, Sep 16 2016 3M Innovative Properties Company Valve cover
D843562, Sep 16 2016 3M Innovative Properties Company Valve cover with diamond pattern
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Patent Priority Assignee Title
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Executed onAssignorAssigneeConveyanceFrameReelDoc
Oct 01 1992JAPUNTICH, DANIEL A Minnesota Mining and Manufacturing CompanyASSIGNMENT OF ASSIGNORS INTEREST 0063670790 pdf
Oct 01 1992BYRAM, DAVID C Minnesota Mining and Manufacturing CompanyASSIGNMENT OF ASSIGNORS INTEREST 0063670790 pdf
Oct 01 1992STEFFEN, JAMES E Minnesota Mining and Manufacturing CompanyASSIGNMENT OF ASSIGNORS INTEREST 0063670790 pdf
Oct 13 1992Minnesota Mining and Manufacturing Company(assignment on the face of the patent)
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