Linkage for the demand regulator of a breathing apparatus

Details Linkage for the demand regulator of a breathing apparatus Linkage for the demand regulator of a breathing apparatus

1975-06-30

1977-06-14

Cline, William R.

Fluid handling

Line condition change responsive valves

With separate connected fluid reactor surface

137DIG9, 251 58, 1281422, 251232, 251251, F16K 3112

Patent

active

040291200

ABSTRACT:
In a scuba or other breathing apparatus, the demand regulator includes a diaphragm connected by a linkage to a valve that supplies breathable gas to the user in response to inhalation demand, as sensed by the diaphragm. The linkage includes a diaphragm-connected lever situated between a ball restrained for axial movement and a fixed member having a spherical surface facing the ball. The lever pivots on the spherical surface to cause sensitive displacement of the ball and hence actuation of the valve.

REFERENCES:
patent: 766416 (1904-08-01), Booth
patent: 1212879 (1917-01-01), Auld et al.
patent: 1546032 (1925-07-01), Schroeder
patent: 1716705 (1929-06-01), McEwan
patent: 1732107 (1929-10-01), Morgan et al.
patent: 2153854 (1939-04-01), Walker
patent: 2591356 (1952-04-01), Howe, Jr.
patent: 2817334 (1957-12-01), Sajeck
patent: 3495619 (1970-02-01), Iizumi

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