摘要:
Buckle and respirators having such buckles. The buckle has a movable cinch bar allowing a strap to be inserted into and be secured by the buckle by opening the cinch bar and inserting the strap. The cinch bar then returns to a closed position and supports the strap over the cinch bar. The cinch bar may be deformable through the use of a living hinge connecting the cinch bar to the body of the buckle. The cinch bar may be split into two members, each being deformably coupled to the buckle body, perhaps with living hinges.
摘要:
Buckle and respirators having such buckles. The buckle has a movable cinch bar allowing a strap to be inserted into and be secured by the buckle by opening the cinch bar and inserting the strap. The cinch bar then returns to a closed position and supports the strap over the cinch bar. The cinch bar may be deformable through the use of a living hinge connecting the cinch bar to the body of the buckle. The cinch bar may be split into two members, each being deformably coupled to the buckle body, perhaps with living hinges.
摘要:
A filtering face-piece respirator 10 that comprises a mask body 12 and a harness 14. The mask body 12 includes (i) a filtering structure 18, (ii) a plastic support structure 16, and (iii) a nose clip 19 that is secured to the plastic support structure 18 by being molded therein. The inventive filtering face-piece respirator is beneficial in that it eliminates the need for an adhesive or welding step to secure the nose clip to the mask body.
摘要:
A filtering face-piece respirator 10 that comprises a mask body 12 and a harness 14. The mask body 12 includes (i) a filtering structure 18, (ii) a plastic support structure 16, and (iii) a nose clip 19 that is secured to the plastic support structure 18 by being molded therein. The inventive filtering face-piece respirator is beneficial in that it eliminates the need for an adhesive or welding step to secure the nose clip to the mask body.
摘要:
Respirator and buckle having a flexural member allowing the buckle to move in three dimensions, potentially improving user comfort, the effectiveness of the respirator, and allowing for more precise adjustments to be made to the fit of the respirator on the user. The flexural member may be a three dimensional living hinge. By lifting on the buckle, the straps that secure the respirator to the user are released and the ability of the buckle to move in three dimensions tends to increase the situations in which the adjustment may occur. Various types of three dimensional living hinges may be utilized, including a cylindrical hinge and a serpentine hinge.
摘要:
A filtering face-piece respirator 10 that comprises a mask body 12 and a harness 14. The mask body 12 includes a supporting frame structure 16 and a filtering structure 18. The frame structure is injection molded onto the filtering structure 18 such that the frame structure 16 becomes bonded to the filtering structure 18. A mask body having such a support structure allows the filtering structure to follow its configuration closely, providing improved aesthetics and collapse resistance to the resulting article.
摘要:
An filtering face-piece respirator that includes a mask body 12 and a harness 14. The mask body includes a support structure 16, filtering structure 18, and a face seal element 40. The face seal element 40 is overmolded onto at least a portion of a perimeter of the support structure of the mask body. The overmolding of the face seal member to the support structure allows the face seal to become firmly secured to the mask body at its perimeter.
摘要:
Face masks that include a unidirectional valve are disclosed. The unidirectional valves permit fluid communication between an interior gas space defined by the mask and the wearer and an exterior gas space outside of the face mask. The unidirectional valves includes one or more valve flaps positioned over an opening formed in the base of the valve. Each of the valve flaps includes a free edge and a hinge located generally opposite from the free edge.
摘要:
An optical unit that includes a polarizing beamsplitter (PBS). The PBS includes a reflective polarizer that transmits a portion of a light beam that has a first polarization and reflects a portion of the light beam that has a second polarization. A light absorbing device is operatively disposed relative to the PBS. The light absorbing device receives the light either transmitted or reflected by the PBS. The light absorbing device includes a light capture portion having a structured surface.
摘要:
The invention features integrated membrane assemblies for selectively transferring a constituent to or from a fluid. The assemblies include two or more flat sheet membrane elements and at least one common manifold connected to the interior regions of the membrane elements.