Breathing regulator having air injector feature

Details Breathing regulator having air injector feature Breathing regulator having air injector feature

1992-07-16

1993-06-29

Grieb, William H.

Surgery

Respiratory method or device

Means for supplying respiratory gas under positive pressure

12820511, 12820524, 137908, 137494, A62B 704

Patent

active

052224902

ABSTRACT:
A breathing system regulator for a demand breathing system has adjusting apparatus for adjusting the demand required to open the air inlet valve to permit the user to increase or decrease the tension on the biasing spring urging the valve closed, and to decrease or increase the cushioning effect of a stream of air urging the valve closed. Adjusting apparatus is provided in which an air injector device is adjustably positioned to direct a flow of air between positions for adjusting the pressure at the inlet valve side of the regulator diaphragm to control the amount of breathing effort required of the user to open the air inlet valve.

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patent: 4862884 (1989-09-01), Christianson
patent: 5035238 (1991-07-01), Christianson
patent: 5042473 (1991-08-01), Lewis

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