1
Charles C Aulgur, David A DiPasquale, Thomas K McDonald, Alan E Kidd: Crew oxygen mask with pneumatic comfort adjustment. Puritan Bennett Corporation, Hovey Williams Timmons & Collins, April 10, 1990: US04915106 (72 worldwide citation)

A respirator especially constructed for flight crews has a harness strap which can be inflated to a somewhat rigid, self-sustaining orientation to permit one-handed placement of the respirator over the wearer's head. Once the respirator is in place, release of a lever for inflating the strap deflate ...


2
Charles C Aulgur, David A DiPasquale, Thomas K McDonald, Alan E Kidd: Crew oxygen mask with pneumatic comfort adjustment. Puritan Bennett Corporation, Hovey Williams Timmons & Collins, August 6, 1991: US05036846 (38 worldwide citation)

A respirator especially constructed for flight crews has a harness strap which can be inflated to a somewhat rigid, self-sustaining orientation to permit one-handed placement of the respirator over the wearer's head. Once the respirator is in place, release of a lever for inflating the strap deflate ...