Mask provided with latch

• US 10,638,802 B2
• Filed: 04/13/2017
• Issued: 05/05/2020
• Est. Priority Date: 04/21/2016
• Status: Active Grant

• Current Assignee: Koken Limited
• Original Assignee: Koken Limited
• Inventors: Shibata, Shinnosuke
• Primary Examiner(s): Hawthorne, Ophelia A
• Application Number:
  US16/095,343
• Publication Number:
  US 20190133219A1
• Time in Patent Office: 1,118 Days
• CPC Class Codes: A41D 13/11 Protective face masks, e.g. for surgical use, or for use in foul atmospheres eye-masks A61F9/04 ; hoods affording protection against heat or harmful chemical agents A62B17/04
• CPC Class Codes: A41D 13/1138 with a cup configuration
• CPC Class Codes: A41D 13/1161 Means for fastening to the user's head
• CPC Class Codes: A62B 18/02 Masks gas-masks for animals A62B18/06; masks for welders A61F9/06

Abstract

There is provided a mask provided with a latch that can maintain a latched state of fastening cords and suppress offsetting when the mask is worn.

A latch of a mask is in the form of an oblong thin sheet, and includes a first latching part for disengageably latching one fastening cord of the mask and a second latching part positioned on the second end edge side of the first latching part, having an insertion through hole for inserting the other fastening cord of the mask in advance. The first latching part has a guide channel extending from the first lateral edge and a first latching hole connected to the guide channel, and the second latching part has a second latching hole communicating with the insertion through hole, and having an outer shape smaller than that, and the first latching hole and the second latching hole are directed in directions opposed to one another in a lateral direction.

Claims

1. A mask, comprising:

a latch in the form of an oblong thin sheet, having a vertical direction and a lateral direction, and including a first and second lateral edges extending in the lateral direction and a first and second end edges extending in the vertical direction, and

first and second fastening cords,

wherein

the latch includes

a first latching part for disengageably latching the first fastening cord of the mask; and

a second latching part positioned between the second end edge and the first latching part, and having an insertion through hole for inserting the second fastening cord of the mask in advance,

the first latching part has a guide channel extending from the first lateral edge, and a first latching hole connected to the guide channel,

the second latching part has a second latching hole separated from and communicating with the insertion through hole, and the second latching hole having a diameter smaller than a diameter of the insertion through hole, and

the first latching hole and the second latching hole are directed in directions opposed to one another in the lateral direction.

2. The mask according to claim 1, further comprising:

a mask body having a cup-shaped covering part.

3. The mask according to claim 2, wherein the mask body has a face-contact part positioned on a rear surface side of an outer peripheral edge of the covering part.

4. The mask according to claim 1, wherein the guide channel of the first latching part has

a first portion extending inward from the first lateral edge, and

a second portion having a diameter larger than a diameter of the first latching hole, and communicating with the first latching hole.

5. The mask according to claim 1, wherein

each of the first and second fastening cords is a belt elastic member, and

a width dimension of each of the first and second fastening cord is larger than an inner peripheral length of the first latching hole and an inner peripheral length of the second latching hole.

6. The mask according to claim 1, wherein

each of the first and second fastening cords is formed of a cord elastic member, and

an outer peripheral dimension of each of the first and second fastening cords is larger than an inner peripheral length of the first latching hole and an inner peripheral length of the second latching hole.

7. The mask according to claim 1, wherein

the second latching part has a cut connected to the insertion through hole and including a portion positioned near the insertion through hole,

the insertion through hole and the second latching hole are separated from each other by a neck part of the second latching part, and

a width dimension of the portion positioned near the insertion through hole is smaller than a width dimension of the neck part.