Mask valve

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Description

FIG. 1 is a front perspective view of a mask valve, showing my design.

FIG. 2 is a rear perspective view thereof.

FIG. 3 is a front elevation view thereof.

FIG. 4 is a rear elevation view thereof.

FIG. 5 is a left side elevation view thereof.

FIG. 6 is a right side elevation view thereof.

FIG. 7 is a top plan view thereof; and,

FIG. 8 is a bottom plan view thereof.

The broken lines in the drawings depict portions of the mask valve that form no part of the claimed design.

Claims

The ornamental design for a mask valve, as shown and described.

Referenced Cited
U.S. Patent Documents
D413166 August 24, 1999 Snow
D765237 August 30, 2016 Danford
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D811580 February 27, 2018 Tang et al.
D815273 April 10, 2018 Persson
D877885 March 10, 2020 Bergman
D906598 December 29, 2020 Zhang
20030154984 August 21, 2003 Fernandes
20080178884 July 31, 2008 Gerson
20090044811 February 19, 2009 Welchel
20090320848 December 31, 2009 Steindorf
20160129287 May 12, 2016 Danford
20180078797 March 22, 2018 Bergman
20180264294 September 20, 2018 Hancock
Other references
  • Dust Mask with Active Carbon Filters and Breathing Valve. Actitop. Amazon.com. Date first available: Jun. 28, 2020. Retrieved from internet: https://www.amazon.com/Active-Filters-Breathing-Reusable-Washable/dp/B08BYN7L7S (Year: 2020).
Patent History
Patent number: D918379
Type: Grant
Filed: Aug 26, 2020
Date of Patent: May 4, 2021
Inventor: Tianxiang Chen (Yiwu)
Primary Examiner: Lilyana Bekic
Application Number: 29/747,936