07647927 is referenced by 23 patents and cites 109 patents.

A breathing apparatus is operable in self-contained and filtered modes of operation. In the self-contained mode of operation, a breathable gas is delivered to a user from a self-contained source of breathing gas. In a second, filtered mode of operation, a suction source draws ambient air through a filter removing contaminants and delivers filtered ambient air to the user. A method of delivering air to a subject is also provided.

Title
Self-contained breathing system
Application Number
10/924281
Publication Number
7647927 (B2)
Application Date
August 23, 2004
Publication Date
January 19, 2010
Inventor
Mark A Hansen
Virginia Beach
VA, US
Daniel A Desrosiers
Epping
NH, US
Gary M Lemire
Lee
NH, US
James W Teetzel
York
ME, US
Agent
Scott C Rand
McLane Graf Raulerson & Middleton P A
Assignee
Wilcox
NH, US
IPC
A62B 23/02
A62B 19/00
A62B 7/10
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