In-line silencer for clean room breathing apparatus

Details In-line silencer for clean room breathing apparatus In-line silencer for clean room breathing apparatus

1993-11-03

1996-06-18

Burr, Edgar S.

Surgery

Respiratory method or device

Means for supplying respiratory gas under positive pressure

12820522, 12820512, 12820213, A62B 700

Patent

active

055268056

ABSTRACT:
Disclosed is an in-line silencer for a clean room breathing apparatus which reduces noise transmitted to a user from an attached air blower. The clean room breathing apparatus includes a headgear assembly worn by the user and an air blower that supplies air to or exhausts air from the headgear assembly through a connecting air hose. The in-line silencer is installed in the air duct between the air blower and the headgear assembly. The silencer has a shell housing with couplings at opposite ends for attaching the silencer in-line with the air blower and the connecting air hose. Within the shell housing of the silencer is a sound-absorbing material that absorbs sound energy from the air flowing through the silencer.

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patent: 5213096 (1993-05-01), Kihlberg et al.
patent: 5297990 (1994-03-01), Renz et al.

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