Title:
MASK AND ITS MANUFACTURING METHOD
Document Type and Number:
WIPO Patent Application WO/2009/092328
Kind Code:
A1
Abstract:
A mask and its manufacturing method are provided. The mask comprises: a main body (a) which is set as a flat or curved sheet; a tongue-shaped part (b) which is pivotally connected to the said main body (a); and wearing parts (c, f) which are used to wear the mask on the mouth by user. Furthermore, the main body (a) can be made of many kinds of materials, even impermeable materials. The mask can be supported a certain space by means of the said tongue-shaped part, to expand the movement extension of the mandible, to increase the space between the main body and the lips, to reduce the friction between the lips, the mandible and the main body, and to facilitate two-sides ventilation.
Inventors:
YAO AIJUN (CN)
Application Number:
PCT/CN2009/070183
Publication Date:
July 30, 2009
Filing Date:
January 16, 2009
Export Citation:
Assignee:
YAO AIJUN (CN)
International Classes:
A62B9/06; A41D13/05; A41D13/11; A62B18/02
Foreign References:
| JP2004024819A | 2004-01-29 | |||
| JP2007229279A | 2007-09-13 | |||
| CN200942245Y | 2007-09-05 | |||
| CN2873254Y | 2007-02-28 | |||
| CN2376945Y | 2000-05-10 | |||
| CN2396835Y | 2000-09-20 |
Attorney, Agent or Firm:
KANGXIN PARTNERS, P.C. (Tower A Indo Building,A48 Zhichun Road, Haidian District, Beijing 8, CN)
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