Disposable breathing mask
OwnerMark Anthony John Fernandesinventor
Life of this patent
Estimating the term…
Abstract
A disposable breathing mask (1) comprising side walls (4, 5) and bottom walls (6, 7) made of multilayer filter material. The mask is attached to a user's head (2) by means of a strap (3) attached to attachment areas (25, 26). Joining the attachment points (25, 26) is a rib (27) which extends over the user's nose. The attachment points (25, 26) and rib (27) together form an exo-skeleton which maintains the positional stability of the strap mounting areas during donning of the mask. Arms (31, 32) extend laterally away from the rib (27) and are arranged such as to apply mild pressure to the side walls (4, 5) in the region of the user's nose so as to ensure contact between the filter material and the user's nose.
Claims22
A disposable breathing mask comprising one or more sheets of filter material and mounting points attached at spaced positions to said filter material for attachment of a strap or straps whereby the mask may be attached to a user's head, said mask being characterised in that said sheet or sheets are formed into left and right side walls and a bottom wall, which walls are joined at their edges to form a cup-shape having a rim suitable to cover the user's nose and mouth, which rim has a shape which is wider at the bottom that at the top.
A mask as claimed in any one of the preceding claims wherein the junctions between adjacent walls are foldable.
A mask as claimed in any one of the preceding claims wherein said mounting points are joined by a rib or ribs of semi-rigid plastics material.
A disposable breathing mask comprising one or more sheets of filter material and mounting points attached at spaced positions to said filter material for attachment of a strap or straps whereby the mask may be attached to a user's head, said mask being characterised in that said mounting points are joined by a rib or ribs of semi-rigid plastics material.
A mask as claimed in any one of the preceding claims wherein one or both of said strap mounting points are provided with a strap length adjustment means in the form of a plurality of spaced apart looping means into a selected one of which the strap can be looped, said looping means being so positioned with respect to one another as to provide an adjustable strap length according to which looping means the strap is looped into.
A disposable breathing mask comprising a facepiece made of filter material and intended to fit over the nose and mouth of a user, and mounting points attached at spaced positions to said facepiece for attachment of a strap or straps whereby the mask may be attached to a user's head, said mask being characterised in that one or both of said strap mounting points are provided with a strap length adjustment means in the form of a plurality of spaced apart looping means into a selected one of which the strap can be looped, said looping means being so positioned with respect to one another as to provide an adjustable strap length according to which looping means the strap is looped into.
Dependencies are inferred from the claim text.