Respirator headpiece and release mechanism
First Claim
1. A respirator including a quick release mechanism, comprising:
- a mask portion, including at least one fluid inlet port;
at least one filtering material in communication with said fluid inlet port;
a yoke portion provided on said mask portion;
a latch attached to the yoke portion;
a headpiece attached to a first end portion of the latch with a first headpiece strap; and
at least one neck strap configured to engage the yoke portion and extend around the neck of a wearer.
16 Assignments
0 Petitions
Accused Products
Abstract
A quick release mechanism and headpiece for use with a respirator. The quick release mechanism uses a cam latch pivotably attached to a yoke to control the tension in an upper tension strap. In the latched position the upper tension strap traverses the yoke and, together with a pair of lower tension straps and neck catch, support and seal the respirator mask against the face of the wearer. In the unlatched position the upper tension straps loosely support the mask below the chin of the wearer in a parked position. The upper strap is attached to a circular shaped headpiece having a crown piece fitting to the top of the head of the wearer. The lower straps are attached to a rounded neck catch secured behind the neck of the wearer. The upper and lower straps preferably and advantageously comprise a material or materials having a low maximum elongation to ensure a snug and comfortable mask fit. Filter or sorbent cartridges and caps are optimized to provide easy replacement of filter or sorbent elements and maximal exposure of filter or sorbent material surface area.
265 Citations
35 Claims
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1. A respirator including a quick release mechanism, comprising:
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a mask portion, including at least one fluid inlet port;
at least one filtering material in communication with said fluid inlet port;
a yoke portion provided on said mask portion;
a latch attached to the yoke portion;
a headpiece attached to a first end portion of the latch with a first headpiece strap; and
at least one neck strap configured to engage the yoke portion and extend around the neck of a wearer. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34)
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35. A respirator including a quick release mechanism, comprising:
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a facepiece;
a yoke position disposed on the facepiece;
a latch attached to the yoke portion at a first end portion;
a headpiece including a first strap attached to a second end portion of the latch;
at least one cartridge connected to the facepiece;
at least one filter or sorbent disposed within at least one cartridge; and
at least one neck strap configured to engage the yoke portion and extend around the neck of a wearer.
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Specification