04522639 is referenced by 134 patents and cites 9 patents.

A unified filter and connector housing (24) incorporating a diversion valve assembly (74), the housing assembly being usable with a protective breathing mask assembly (12) of the type requiring separate breathing gas and ventilating gas supply lines (18 and 20). The housing assembly includes first and second housing members (26, 32) which receive therebetween a filter (30) in an airtight relationship. The first housing member is provided with inlets (46, 62) to which quick disconnect supply lines (50, 66) for breathing gases and ventilating gases may be secured. Parallel breathing and ventilating gas passageways (42, 58) are disposed within the first housing member, only the breathing gas passageway normally being in a fluid communication with the filter. The diversion valve assembly (74) is operatively disposed between the breathing and ventilating gas passageways (46, 58) and when disposed in an emergency position opens the communication between the two passageways while substantially blocking the ventilating gas passageway downstream of said opening to cause most of the gas received from either inlet to flow through the filter and into the breathing gas supply line (18) and permitting only a small portion of the gas received from either inlet to pass through the ventilating gas supply line (20).

Title
Unified filter and connector housing assembly incorporating a diversion valve
Application Number
6/485179
Publication Number
4522639
Application Date
April 15, 1983
Publication Date
June 11, 1985
Inventor
James H Ryder
Sierra Madre
CA, US
William K Ansite
Glendale
CA, US
Agent
Christel Bean & Linihan
Assignee
Figgie International
OH, US
IPC
B01D 46/42
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