Surgery – Respiratory method or device – Means for supplying respiratory gas under positive pressure
Reexamination Certificate
1999-09-17
2001-12-25
Weiss, John G. (Department: 3761)
Surgery
Respiratory method or device
Means for supplying respiratory gas under positive pressure
C128S201190, C128S201270, C128S201280, C128S205240
Reexamination Certificate
active
06332464
ABSTRACT:
FIELD OF THE INVENTION
This invention relates to a scuba diving regulator and particularly to an easy to use scuba diving regulator that may charge and discharge air simply and produce audio alarm below and above water surface.
BACKGROUND OF THE INVENTION
Among the scuba diving devices now being generally used, there is an air tank to contain compressed air. There is also a buoyancy compensator jacket which may communicate with the air tank through an air hose. The air hose has a charge valve and a discharge valve for controlling air charging or discharging to adjust the buoyancy of the jacket.
An alarm device also often being included in the diving device. It may produce audio sound to alert an emergency situation and call for help. Conventional alarm devices use compressed air to repeatly produce pressure difference at two opposite sides of a membrane for generating vibration to produce audio sound to gain other people's attention.
However when a diver dives below water surface, sea water enters into the chamber and speaker of the alarm device making the vibration resulting from air pressure difference not functionable. Hence such alarm devices may only be used above water surface. It is useless below water surface.
There are many situations divers need help when diving under water surface such as physical exhaustion, body disorder, threatening by harmful seal animals or shark and the like. If a diver cannot get quick attention and help from other divers nearby, it could result in serious danger or even lose life. There is a great need for better alarm devices that can work effectively both above and under water surface.
SUMMARY OF THE INVENTION
It is an object of this invention to provide a scuba diving regulator that may produce audio alarm above and below water surface to alert other people's attention. It also has simple structure and small size to facilitate carrying and use. The regulator may be used with the air tank and buoyancy conpensator jacket or vest. A user may single-handedly operate for charging air, discharging air or producing alarming sound for help.
The structure is streamline and may reduce water resistance, and may reduce production and installation costs.
The scuba diving regulator according to this invention includes a casing, a mouth piece, an air valve unit, an audio unit, a nozzle unit, an air charge unit and an air discharge unit.
The casing includes an alarm connector, a whistle connector linearly aligned with the alarm connector, a mouth piece connector, a longitudinal chamber and a body.
The air valve unit engages with the alarm connector and includes a push button, an elastic member embedded in the push bottom and an alarm valve which may opened or closed by pressing the push button.
The audio unit engages with the whistle connector and includes an air cylinder, a piston reciprocally movable in the cylinder and an impact member able to generate alarming sound when hit by the piston.
The nozzle unit engages with the casing and includes an air flow member, a plurality of seal rings and a screw member. The seal rings serve to seal and hold the nozzle unit, and the screw is to screw the nozzle unit in the chamber. The air flow member engages with the alarm valve.
The air charge unit engages with the casing and includes a charge button, a seal ring, an elastic member and a charge valve which is held on the air flow member. The charge button is reciprocally movable in the body and is sealed by the seal ring and engages with the elastic member.
The air discharge unit engages with casing and includes a discharge button reciprocally movable in the body and an elastic member engageable with the discharge button.
REFERENCES:
patent: Re. 36223 (1999-06-01), Schuler
patent: 4095667 (1978-06-01), Mahig et al.
patent: 4852510 (1989-08-01), Joseph, Jr. et al.
patent: 4998499 (1991-03-01), Nordbeck
patent: 5259375 (1993-11-01), Schuler
patent: 5302055 (1994-04-01), Johnston
patent: 5520485 (1996-05-01), Hermansen
patent: 5788415 (1998-08-01), Chen
patent: 6007049 (1999-12-01), Wass et al.
Dougherty & Troxell
Erezo Darwin P.
Weiss John G.
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