Multiple low pressure distributor for underwater breathing apparatus

Abstract: Multiple distributor for low-pressure uses forming part of the equipment of a scuba diver equipped with a self-contained breathing apparatus. It comprises a distributor body (1) connected by means of a single pipe (202) to the first-stage pressure reducer (102) of one or more cylinders (2). The said body is connected via connectors (104, 105, 103) for the individual uses. In fact, it is connected with the following: a second-stage pressure reducer (4) for an emergency mouthpiece, a second-stage pressure reducer (5) connected to the diver's mouthpiece, and the inflation connection of a balancing jacket (3), the air inlet to the latter connection being controlled via an appropriate cut off valve operated by a push-button (203) mounted on the distributor body.

Description: The present invention refers to a multiple distributor for low-pressure uses, forming part of the equipment of a scuba diver equipped with a self-contained breathing apparatus. The equipment of a scuba diver equipped with self-contained breathing apparatus normally consists, among other things, of a diving suit, a balancing jacket, and a single or double cylinder set, as a source of breathable air. In turn, this air source comprises a first-stage pressure reducer of the cylinder, from which there proceed a whole series of pipes which are connected to the balancing jacket, for their inflation, to the second-stage pressure regulator, and to a second-stage emergency pressure regulator, and in the case of a water-tight diving suit, also to the air space in the suit itself. Besides being an hindrance to freedom of movement of the diver, all these pipes also constitute a danger, in that they may easily get entangled in various obstacles. In addition, the various controls for inflating and deflating the different elements served by the said pipes are not always easy and convenient to reach. In document US-A-4137585 are provided two different solution to overcome the problem of the inflation of a buoyancy compensator: the first solution comprises a low pressure filling fixture attached to a hose that is in turn connected to the low pressure side of a first stage regulator. That is to say, the inflator is provided with its individual hose connected to the first stage regulator, thus increasing the bulk around the body of the diver, and therefore decreasing his comfort and his safety. The second solution comprises a manifold connected to a low pressure line; the said manifold is "connected by two outlet respectively to the front and back bladders through the respective ports. The switching manifold is also connected by means of a hose to the combination second stage regulator. In this case, as explained in the description of the cited document, the gas exhausted by the diver is used for inflating the bladders. Alternatively, pushing a control button of a valve placed in the combination second stage regulator, the low pressure air can be diverted to the bladders. The aim of the invention is to simplify the existing structures, by centralizing all the controls in a position very easy to reach, thus eliminating most of the pipes that branch off from the first stage. According to the invention, this aim is achieved providing a multiple distributor for low-pressure uses forming part of the equipment of a scuba diver equipped with a self-contained breathing apparatus, comprising a distributor body connected by means of a single pipe to the first-stage pressure reducer of one or more cylinders, the said body being connected via one or more connectors to the individual items of use, characterised in that the said body is connected with the following: a second-stage pressure reducer for an emergency mouthpiece, a second-stage pressure reducer connected to the divers mouthpiece, and the inflation connection of a balancing jacket, the air inlet to the latter connection being controlled via an appropriate cut off valve operated by a push-button mounted on the distributor body. The invention will now be described in greater detail with reference to the single attached drawing, which illustrates a preferred embodiment of the device according to the invention. As illustrated in the drawing, the said distributor comprises one body 1 connected to the first-stage pressure reducer 102 of the cylinder 2 by means of the single pipe 202, which may be either fastened to or incorporated in the balancing jacket. This body 1, which in the case illustrated is a cylindrical body, presents a series of connections, which in the example shown are: one connection 103 to the balancing jacket 3 which is controlled by a valve that can be operated by means of a push-button 203 set on the distributor itself: one connection 104 for the pipe that takes to the second-stage emergency regulator 4; one connection 105 for the pipe that takes to the second-stage regulator 5, i.e., the regulator connected to the diver=s mouthpiece. Eventually, in the case of water-tight suits, this body 1 may also be provided with a connection 106 for a pipe that takes directly to the suit 6. In addition, the said body 1 may also be provided with a push-button 303 for controlling a valve for deflating the balancing jacket. Obviously, the number of connections that start from the distributor 1, as well as the number of control push-buttons installed on the distributor, may vary according to the needs.

Claims: Multiple distributor for low-pressure uses forming part of the equipment of a scuba diver equipped with a self-contained breathing apparatus, comprising a distributor body (1) connected by means of a single pipe (202) to the first-stage pressure reducer (102) of one or more cylinders (2), the said body (1) being connected via one or more connectors (104, 105, 103) to the individual items of use, characterised in that the said body (1) is connected with the following: a second-stage pressure reducer (4) for an emergency mouthpiece, a second-stage pressure reducer (5) connected to the divers mouthpiece, and the inflation connection of a balancing jacket (3), the air inlet to the latter connection being controlled via an appropriate cut off valve operated by a push-button (203) mounted on the distributor body. Multiple distributor as claimed in Claim 1, characterised in that the said distributor may also be provided with a connection (106) for a pipe that takes directly to a water-tight diving suit (6). Multiple distributor as claimed in Claims 1 or 2, characterised in that it may be provided with a push-button (303) for operating means for deflating the jacket. Multiple distributor as claimed in the previous claims, characterised in that the pipe (202) that connects the distributor with the first-stage pressure reducer may be fastened to or incorporated in the balancing jacket. Multiple distributor as claimed in the previous claims, characterised in that the said distributor body (1) is located on the chest of the scuba diver.

Inventors: GAROFALO GIOVANNI, GAROFALO, GIOVANNI
Applicants: HTM SPORT SPA, HTM SPORT S.P.A.
Application year: 1998
Main classification: B63C11
IPC codes: B63C11