Accessory cap for a respiratory filter cartridge
First Claim
1. An accessory cap for a respiratory filter cartridge comprising:
- a housing including a front wall and a side wall extending rearwardly from said front wall,said front wall and said side wall cooperating to define an interior cavity,said side wall including a retaining formation configured and arranged to releasably engage the filter cartridge,said housing including an air passage configured to allow air to pass from an exterior environment to said interior cavity; and
a pre-filter support web removably received within said interior cavity, said pre-filter support web being spaced inwardly from said front wall whereby a pre-filter cavity is defined within said interior cavity adjacent said front wall;
wherein said support web is pivotably connected to said housing by a living hinge; and
wherein said air passage is located on a lower portion of said side wall whereby liquid is restricted from entering said air passage.
1 Assignment
0 Petitions
Accused Products
Abstract
An accessory cap for a respiratory cartridge includes a housing having a front wall and a side wall which cooperate to define an interior cavity. The side wall includes a retaining formation configured and arranged to releasably engage and hold the housing on the respiratory cartridge. The housing includes a downwardly facing air passage configured to allow air to pass from an exterior environment to the interior cavity. The accessory cap further includes a pre-filter support web removably received within the interior cavity and spaced inwardly from the front wall. The housing and the pre-filter support web form a pre-filter cavity within the interior cavity adjacent to the front wall. The accessory cap can function as a standalone shower cap, or a pre-filter media can be optionally inserted into the pre-filter cavity so that the accessory cap functions as a combination pre-filter and a shower cap.
104 Citations
12 Claims
-
1. An accessory cap for a respiratory filter cartridge comprising:
-
a housing including a front wall and a side wall extending rearwardly from said front wall, said front wall and said side wall cooperating to define an interior cavity, said side wall including a retaining formation configured and arranged to releasably engage the filter cartridge, said housing including an air passage configured to allow air to pass from an exterior environment to said interior cavity; and a pre-filter support web removably received within said interior cavity, said pre-filter support web being spaced inwardly from said front wall whereby a pre-filter cavity is defined within said interior cavity adjacent said front wall; wherein said support web is pivotably connected to said housing by a living hinge; and wherein said air passage is located on a lower portion of said side wall whereby liquid is restricted from entering said air passage. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
-
-
10. A respiratory filter for removable attachment to a respirator mask, comprising:
- a filter cartridge having a filter body housing with an intake end, a connection end, and a mounting shoulder; and
an accessory cap comprising;
a housing including a front wall and a side wall extending rearwardly from said front wall, said front wall and said side wall cooperating to define an interior cavity, said side wall including a retaining formation configured and arranged to releasably engage said mounting shoulder of said filter cartridge, said housing including an air passage configured to allow air to pass from an exterior environment to said interior cavity, wherein said air passage is located on a lower portion of said side wall whereby liquid is restricted from entering said air passage; and
a pre-filter support web removably received within said interior cavity, said pre-filter support web being spaced inwardly from said front wall whereby a pre-filter cavity is defined within said interior cavity adjacent said front wall;
wherein said support web is pivotably connected to said housing by a living hinge. - View Dependent Claims (11, 12)
- a filter cartridge having a filter body housing with an intake end, a connection end, and a mounting shoulder; and
Specification