FIG. 1 is a front perspective view of a unidirectional valve, showing the new design.
FIG. 2 is a top plan view thereof;
FIG. 3 is a right side elevational view thereof, the left side elevational view being the mirror image of the right side elevational view;
FIG. 4 is a bottom plan view thereof;
FIG. 5 is a front elevational view thereof; and,
FIG. 6 is a rear elevational view thereof.
In the drawings, the broken lines depict environmental subject matter only and form no part of the claimed design.
Patent |
Priority |
Assignee |
Title |
10570590, |
Jul 01 2013 |
WCM Industries, Inc. |
Hydrant enclosure with integral faucet |
10905903, |
Jul 15 2013 |
3M Innovative Properties Company |
Respirator having optically active exhalation valve |
11299874, |
Jul 01 2013 |
WCM Industries, Inc. |
Hydrant enclosure with integral faucet |
11413481, |
May 12 2015 |
3M Innovative Properties Company |
Respirator tab |
11761178, |
Jul 01 2013 |
WCM Industries, Inc. |
Hydrant enclosure with integral faucet |
11813581, |
Jul 14 2017 |
3M Innovative Properties Company |
Method and adapter for conveying plural liquid streams |
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 |
9533180, |
Jul 01 2013 |
WCM INDUSTRIES, INC |
Hydrant enclosure with integral faucet |
9580891, |
Jul 01 2013 |
WCM INDUSTRIES, INC |
Hydrant enclosure with integral faucet |
D746439, |
Dec 30 2013 |
Kimberly-Clark Worldwide, Inc |
Combination valve and buckle set for disposable respirators |
D746974, |
Jul 15 2013 |
3M Innovative Properties Company |
Exhalation valve flap |
D760380, |
May 08 2014 |
ST ENGINEERING INNOSPARKS PTE LTD ; ST ENGINEERING PTE LTD |
Child active venting system for disposable respirator |
D766401, |
May 18 2015 |
Honeywell International Inc. |
Valve |
D788887, |
Jun 27 2014 |
WCM Industries, Inc. |
Hydrant enclosure |
D796021, |
Jun 07 2016 |
Videojet Technologies Inc |
Air filter housing |
D818565, |
Mar 02 2015 |
WCM Industries, Inc. |
Hydrant enclosure |
D827785, |
Mar 09 2015 |
WCM Industries, Inc. |
Hydrant enclosure |
D827811, |
Sep 16 2016 |
3M Innovative Properties Company |
Valve cover |
D827812, |
Sep 16 2016 |
3M Innovative Properties Company |
Valve cover with openings |
D828546, |
Sep 16 2016 |
3M Innovative Properties Company |
Valve cover with openings |
D829868, |
Mar 09 2015 |
WCM Industries, Inc. |
Hydrant enclosure |
D832623, |
Dec 23 2014 |
Varidesk, LLC |
Desk |
D841131, |
Jun 27 2014 |
WCM Industries, Inc. |
Hydrant enclosure |
D841132, |
Jun 27 2014 |
WCM Industries, Inc. |
Hydrant enclosure |
D842983, |
Sep 16 2016 |
3M Innovative Properties Company |
Valve cover |
D843562, |
Sep 16 2016 |
3M Innovative Properties Company |
Valve cover with diamond pattern |
D848582, |
Jun 27 2014 |
WCM Industries, Inc. |
Hydrant enclosure |
D849245, |
Sep 16 2016 |
3M Innovative Properties Company |
Valve cover |
D861835, |
Jun 27 2014 |
WCM Industries, Inc. |
Hydrant enclosure |
D882758, |
Sep 16 2016 |
3M Innovative Properties Company |
Valve cover |
D900306, |
Sep 16 2016 |
3M Innovative Properties Company |
Valve cover |
D929573, |
May 23 2019 |
Milwaukee Electric Tool Corporation |
Respirator valve |
ER2548, |
|
|
|
Patent |
Priority |
Assignee |
Title |
2072516, |
|
|
|
2230770, |
|
|
|
2895472, |
|
|
|
4215682, |
Feb 06 1978 |
Minnesota Mining and Manufacturing Company |
Melt-blown fibrous electrets |
4419993, |
Dec 10 1981 |
Minnesota Mining & Manufacturing Company |
Anti-fogging surgical mask |
4441494, |
Mar 02 1981 |
|
Cold weather breathing device |
4536440, |
Mar 27 1984 |
Minnesota Mining and Manufacturing Company |
Molded fibrous filtration products |
4592815, |
Feb 10 1984 |
Japan Vilene Co., Ltd. |
Method of manufacturing an electret filter |
4630604, |
Apr 09 1985 |
Siebe North, Inc. |
Valve assembly for a replaceable filter respirator |
4790306, |
Sep 25 1987 |
Minnesota Mining and Manufacturing Company |
Respiratory mask having a rigid or semi-rigid, insert-molded filtration element and method of making |
4807619, |
Apr 07 1986 |
Minnesota Mining and Manufacturing Company |
Resilient shape-retaining fibrous filtration face mask |
4827924, |
Mar 02 1987 |
Minnesota Mining and Manufacturing Company |
High efficiency respirator |
4874399, |
Jan 25 1988 |
Minnesota Mining and Manufacturing Company |
Electret filter made of fibers containing polypropylene and poly(4-methyl-1-pentene) |
4898174, |
May 03 1988 |
ALLIED HEALTHCARE PRODUCTS, INC |
Automatic ventilator |
4915105, |
Oct 28 1988 |
|
Miniature respiratory apparatus |
4934362, |
Mar 26 1987 |
Minnesota Mining and Manufacturing Company |
Unidirectional fluid valve |
4971052, |
Jul 26 1988 |
Minnesota Mining and Manufacturing Company |
Breathing apparatus |
5025052, |
Sep 12 1986 |
Minnesota Mining and Manufacturing Company |
Fluorochemical oxazolidinones |
5035239, |
Jun 25 1988 |
Minnesota Mining and Manufacturing Company |
Powered respirators |
5062421, |
Nov 16 1987 |
Minnesota Mining and Manufacturing Company |
Respiratory mask having a soft, compliant facepiece and a thin, rigid insert and method of making |
5099026, |
Sep 12 1986 |
|
Fluorochemical oxazolidinones |
5127397, |
Sep 04 1989 |
Ambu International A/S |
Protective device kit for use in pulmonary ventilation treatment by the mouth-to-mouth or mouth-to-nose methods |
5325892, |
May 29 1992 |
3M Innovative Properties Company |
Unidirectional fluid valve |
5394568, |
Jan 28 1993 |
Minnesota Mining and Manufacturing Company |
Molded head harness |
5411576, |
Mar 26 1993 |
Minnesota Mining and Manufacturing Company |
Oily mist resistant electret filter media and method for filtering |
5464010, |
Sep 15 1993 |
3M Innovative Properties Company |
Convenient "drop-down" respirator harness structure and method of use |
5465712, |
Jul 30 1993 |
VALLEY FORGE SCIENTIFIC CORPORATION A CORP OF PENNSYLVANIA |
Resuscitation mask having ribs in the air flow conduit and mask body |
5472481, |
Mar 26 1993 |
Minnesota Mining and Manufacturing Company |
Oily mist resistant electret filter media |
5496507, |
Aug 17 1993 |
Minnesota Mining and Manufacturing Company |
Method of charging electret filter media |
5509436, |
May 29 1992 |
3M Innovative Properties Company |
Unidirectional fluid valve |
5579761, |
Jan 20 1995 |
3M Innovative Properties Company |
Respirator having snap-fit filter cartridge |
5617849, |
Sep 12 1995 |
Minnesota Mining and Manufacturing Company |
Respirator having thermochromic fit-indicating seal |
5687767, |
Jul 26 1996 |
Minnesota Mining and Manufacturing Company |
Uni-directional fluid valve |
5706804, |
Oct 01 1996 |
Minnesota Mining and Manufacturing Company |
Liquid resistant face mask having surface energy reducing agent on an intermediate layer therein |
5908598, |
Aug 14 1995 |
3M Innovative Properties Company |
Fibrous webs having enhanced electret properties |
5924420, |
Sep 24 1996 |
Minnesota Mining and Manufacturing Company |
Full face respirator mask having integral connectors disposed in lens area |
6041782, |
Jun 24 1997 |
3M Innovative Properties Company |
Respiratory mask having comfortable inner cover web |
6047698, |
Aug 20 1998 |
Moldex-Metric, Inc.; MOLDEX-METRIC, INC A CALIFORNIA CORPORATION |
Unidirectional fluid valve |
6055983, |
Mar 11 1997 |
DENTEC SAFETY SPECIALISTS CORP |
Respirator filtration device |
6057256, |
Oct 11 1983 |
3M Innovative Properties Company |
Web of biocomponent blown fibers |
6062221, |
Oct 03 1997 |
3M Innovative Properties Company |
Drop-down face mask assembly |
6068799, |
Oct 01 1997 |
3M Innovative Properties Company |
Method of making electret articles and filters with increased oily mist resistance |
6123077, |
Mar 08 1996 |
3M Innovative Properties Company |
Flat-folded personal respiratory protection devices and processes for preparing same |
6125849, |
Nov 11 1997 |
3M Innovative Properties Company |
Respiratory masks having valves and other components attached to the mask by a printed patch of adhesive |
6158429, |
Oct 26 1998 |
The United States of America as represented by the Secretary of the Army |
Hood respirator for protection against biological hazards |
6213122, |
Oct 01 1997 |
3M Innovative Properties Company |
Electret fibers and filter webs having a low level of extractable hydrocarbons |
6216693, |
Jan 20 1995 |
3M Innovative Properties Company |
Respirator having a compressible press fir filter element |
6238466, |
Oct 01 1997 |
3M Innovative Properties Company |
Electret articles and filters with increased oily mist resistance |
6805124, |
Jul 24 1998 |
3M Innovative Properties Company |
Face mask that has a filtered exhalation valve |
7013895, |
Nov 21 2001 |
3M Innovative Properties Company |
Exhalation and inhalation valves that have a multi-layered flexible flap |
7028689, |
Nov 21 2001 |
3M Innovative Properties Company |
Filtering face mask that uses an exhalation valve that has a multi-layered flexible flap |
7503326, |
Dec 22 2005 |
3M Innovative Properties Company |
Filtering face mask with a unidirectional valve having a stiff unbiased flexible flap |
20020023651, |
|
|
|
20030005934, |
|
|
|
20040255947, |
|
|
|
20050061327, |
|
|
|
20070119459, |
|
|
|
20070144524, |
|
|
|
20080178884, |
|
|
|
20110139158, |
|
|
|
20120125342, |
|
|
|
232635, |
|
|
|
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 |
D443927, |
Feb 17 1999 |
3M Innovative Properties Company |
Respiratory mask |
EP8757780001, |
|
|
|
EP756881, |
|
|
|
28102, |
|
|
|
RE37974, |
Jul 26 1996 |
3M Innovative Properties Company |
Uni-directional fluid valve |
WO1737, |
|
|
|
WO128634, |
|
|
|
WO9324181, |
|
|
|