Personal air filtering and delivery systems

Details Personal air filtering and delivery systems Personal air filtering and delivery systems

1998-02-18

2000-09-19

Joyce, Harold

Surgery

Respiratory method or device

Means for removing substance from respiratory gas

12820512, 12820527, 454187, A62B 710

Patent

active

061196894

ABSTRACT:
An air filter unit includes an air filter made up of two layers of submicron filter media (32, 34) such as HEPA or ULPA filter media, with a layer of electrostatic filter media (33) sandwiched therebetween. Preferably, a layer of electrostatic filter media (31) is also provided on the upstream side of the submicron filter media (32). A personal delivery system for filtered air includes air delivery tubes (66) supported in relation to a user's face to position end air supply openings (67) adjacent opposite sides of the user's nose and mouth. Filtered air from the air supply tubes create a curtain or area of filtered air around the user's nose and mouth so the user breathes filtered rather than ambient air. An area delivery system includes a canopy (87) over the area with filtered air supplied to the inside of the canopy.

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