One-size-fits-more face mask
AssigneeQbas Co., Ltd.
InventorChih-Cheng SHIUE
Life of this patent
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Abstract
A one-size-fits-more face mask is provided, which includes a frame, a viewing window assembly and a waterproof skirt having a connecting portion and a contact portion. The connecting portion, the frame and the viewing window assembly are watertightly embedded together. The contact portion has an upper portion and two side portions, each having a U-shaped cross section. The U-shaped cross section is continuously formed with an outer curved portion, a mid curved portion and an inner curved portion. The inner curved portion is opposite to the outer curved portion and has an inner curvature radius ranging from 8 mm to 15 mm. the mid curved portion forms a longitudinal span from a tip end of the mid curved portion to a free end of the inner curved portion, and the longitudinal span ranges from 15 mm to 25 mm.
Claims12
A one-size-fits-more face mask, comprising:
- a frame;
- a viewing window assembly;
- a waterproof skirt having a connecting portion and a contact portion, wherein the connecting portion, the frame and the viewing window assembly are watertightly embedded together;
- characterized in that:
- the contact portion has an upper portion and two side portions, and each of the upper portion and two side portions has a U-shaped cross section;
- the U-shaped cross section is continuously formed with an outer curved portion, a mid curved portion and an inner curved portion;
- the inner curved portion is opposite to the outer curved portion and has an inner curvature radius ranging from 8 mm to 15 mm;
- and
- the mid curved portion forms a longitudinal span from a tip end of the mid curved portion to a free end of the inner curved portion, and the longitudinal span ranges from 15 mm to 25 mm.
Dependencies are inferred from the claim text.