Fluid handling – Ambient condition change responsive – Underwater
Patent
1997-05-06
1998-09-22
Chambers, A. Michael
Fluid handling
Ambient condition change responsive
Underwater
13750542, 13750537, 251356, 251368, F16K 31126
Patent
active
058100415
ABSTRACT:
A pressure regulator for the first reduction stage of a two-stage aqualung. The regulator includes an inlet passage connected to a supply of breathable gases at high pressure; an outlet passage for the gases leading to a second stage regulator; a valve between the inlet passage and the outlet passage; the valve including a valve seat provided with central a through passage and a guided shutoff element; a flexing chamber communicating by one end with the surronding environment and closed at the other end by an impermeable and elastically deformable diaphragm; a rod-like member in contact by one end with the diaphragm and extending with clearance by its other end through the central passage of the valve seat up to the shutoff element. The valve means comprising a planar valve seat, and a shutoff element the portion of which, cooperating with the valve seat, is hemispherical sectioned.
REFERENCES:
patent: 2758596 (1956-08-01), Cupp
patent: 2768643 (1956-10-01), Acomb
patent: 3620251 (1971-11-01), Bowen
patent: 3920033 (1975-11-01), Ferrando
patent: 4228821 (1980-10-01), Stark
patent: 4911405 (1990-03-01), Weissgerber
patent: 5002662 (1991-03-01), Ledtje et al.
patent: 5497803 (1996-03-01), Ferrante
Chambers A. Michael
HTM Sport S.p.A.
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