Control group of a second-stage regulator for scuba divers

Details Control group of a second-stage regulator for scuba divers Control group of a second-stage regulator for scuba divers

2008-03-25

2008-03-25

Yu, Justine R. (Department: 3771)

Surgery

Respiratory method or device

Means for supplying respiratory gas under positive pressure

C128S201270, C128S201280, C128S205120, C137S494000, C137S510000, C251S359000, C251S360000

Reexamination Certificate

active

07347206

ABSTRACT:
A group for controlling a second-stage regulator for scuba divers. The regulator comprises a regulator body with an inlet conduit for connection to a first-stage regulator which supplies a breathable gaseous mixture at a constant pressure and an outlet conduit for connection to a mouthpiece of the user. The group comprises a first bushing defining an intermediate chamber with a bottom wall wherein a central hole is formed, a poppet loosely engaged within the hole, the end of the poppet being connected to lever means, a second bushing engaged in the first bushing and defining an inlet chamber and a third bushing engaged in the second bushing and defining a regulator seat at one of its ends. The head of the poppet engages tightly in the seat and an elastic member is provided coaxial to the poppet in the intermediate chamber for maintaining the head against the regulator seat.

REFERENCES:
patent: 3570808 (1971-03-01), Wrenn
patent: 4219017 (1980-08-01), Shamlian et al.
patent: 5190030 (1993-03-01), Semeia
patent: 5259375 (1993-11-01), Schuler
patent: 6718977 (2004-04-01), Matsuoka

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