Abstract:
A quick-disconnect device for coupling segments of a diver&#39;s umbilical  ho includes separable rectangular bodies carrying complementary hose couplings spaced therealong. The bodies, which have nested rim and reduced portions, are biased toward separation by a rectangular, flat-type spring and releasable retained against separation by a retractable retaining pin extending diagonally therethrough and normally locked against retraction by partial rotation.

Description:
BACKGROUND OF THE INVENTION 
     This invention relates to the field of diver&#39;s life support or umbilical connections, and more particularly to a multiple hose, emergency quick-disconnect device. 
     Underwater breathing apparatus for divers are often supplied with breathing gas, heating water, or other fluids via hoses from a remote location at the surface or a submerged platform or station such as a diving bell or personnel transfer capsule. One of the failure modes that must be contemplated is the fouling of such hoses at a point that is at such a distance from the platform or other station that the diver is unable to return thereto, or to some other haven. It has been contemplated that the diver be provided with an emergency, self-contained supply of breathing gas for use in case of interruption of the normal supply by hose. Such get-home capability is necessarily of rather short duration, and accordingly there is needed a reliable quick-disconnect capability by which the diver can rapidly break his connection with normal service supply hoses so as to permit his safe return to the platform, capsule or other haven within the limited time permitted by the get-home capability of the breathing apparatus. 
     SUMMARY OF THE INVENTION 
     With the foregoing in mind, it is a principal object of this invention to provide a reliable, easily and quickly operable device for effecting rapid disconnection of the life support service hose or hoses from the diver&#39;s suit or breathing apparatus so as to free the diver in the case of emergency, or the like. 
     Another important object of the invention is to provide a multiple hose coupling, connect/disconnect device that can be actuated to release the connection by a simple manuever such as pulling a keeper pin, which manuever can be readily accomplished with one hand even if heavily gloved. 
     Yet another object is to provide a hose coupling device of the foregoing character that avoids any likelihood of inadvertent or untimely operation that might effect an unwanted or unexpected disconnection that could place the diver in jeopardy. 
     As another object, the invention aims to provide a diver hose quick disconnect device that is economical to manufacture, of durable construction, yet light and positive in operation, and which can be conveniently used repeatedly as the connection of the service hoses to the diver during dressing. 
     Other objects and many of the attendant advantages will be readily appreciated as the subject invention becomes better understood by reference to the following detailed description, when considered in conjunction with the accompanying drawings. 
    
    
     DESCRIPTION OF THE DRAWINGS 
     FIG. 1 is a perspective view of a diver&#39;s umbilical quick-disconnect device embodying the invention; 
     FIG. 2 is a side view of the device of FIG. 1, partly in elevation and partly in section, shown in disconnected condition; 
     FIG. 3 is a sectional view taken substantially along line 3--3 of FIG. 1; and 
     FIG. 4 is a perspective view of a spring member forming part of the device. 
    
    
     DESCRIPTION OF THE PREFERRED EMBODIMENT 
     In the exemplary form of the invention illustrated in the drawings and described hereinafter, and with particular reference first to FIG. 1, a quick-disconnect, multiple hose connector device is indicated generally at 10. The device 10 comprises a generally rectangular first body 12 that carries a first plurality of coupling elements or halves 14, 16, and 18 that have exposed, externally threaded nipples for threaded connection to air or water supply hoses, such as hose 20, leading from a supply station. A generally rectangular second body 22 carries a second plurality of coupling elements or halves 24, 26, and 28 (FIG. 2) in mating registration alignment with the coupling halves 14, 16, and 18, respectively, and having exposed, externally threaded nipples for threaded connection with hoses, such as 30, forming a diver&#39;s whip or umbilical segment serving the diver&#39;s life support apparatus. The bodies 12 and 22 are conveniently formed of a corrosion resistant material, suitable for underwater use, such as a rigid synthetic plastic material. 
     As is best illustrated in FIG. 2, wherein the coupling halves and the bodies 12 and 22 carrying them have been separated, a rectangular rim member 32 is fixed to the peripheral portion of the inner face of body 12 by screws 33. This rim member serves to guidingly receive a reduced portion 22a of the body 22 when the device is assembled. Referring also to FIG. 3, the rim member 32 has laterally projecting ears 32a, 32b which have aligned, diagonal bores 34, 36 receiving a retaining pin 38. The reduced portion 22a of body 22 has a diagonal bore 40 in registration alignment with the bores 34, 36 and through which the retaining pin 38 also passes. 
     Pin 38 has a round-shaped handle 38a that can be manually rotated to turn the pin a quarter turn in one direction to lock the pin against withdrawal, or a quarter turn in the opposite direction to permit retraction so as to allow separation of the bodies 12 and 22 and decoupling of the associated coupling halves. To this end, the pin 38 has axially extending grooves 38b, each ending in circumferentially extending groove portions 38c cooperating with nibs projecting from the ends of screws 42,44 threaded into ears 32a, 32b, respectively, at least one of the nibs being operative to limit retraction of the retainer pin completely from the rim. 
     Disposed about the reduced portion 22a of body 22 and against the shoulder 46 formed thereby is a generally rectangular spring member 48 that is formed from flat spring stock, preferably of stainless steel, to have angular bends 50 in the side portions as illustrated in FIG. 4. The spring member 48 has apertures 52 at the corners of one end and that end is fixed by screws 54 to the body 22. The other end of the spring member is free to move relative to body 22. When the device is assembled, the spring member 48 is resiliently flattened between the shoulder 46 and the rim member 32 so as to provide a force tending to separate the bodies 12 and 22. 
     The hose coupling halves 14, 16 and 18 are retained in parallel bores in body 12 by keeper rings 60. These coupling halves comprise threaded nipples at their outer ends and stepped axial bores forming receptacles 64 at their inner ends. It will be noted that the spacing between coupling halves 16 and 18 is greater than between 14 and 16. This avoids possibility of incorrect orientation of the halves during a coupling operation and also provids sufficient space for the angular disposition of the retainer pin 38. That disposition provides a better distribution of retaining forces and also provides for a more natural direction of pull for a diver when the device 10 is worn with his life support system. 
     The hose coupling halves 24, 26, and 28, which are spaced in a corresponding manner to coupling halves 14, 16, and 18, are retained in parallel bores in body 22 by keeper rings 66 and comprise threaded nipples at their outer ends. The inner ends are provided with stepped projections 68 adapted to be received in the receptacles 64. O-rings 70 serve to effect seals between the corresponding coupling halves when engaged. 
     In operation, the device 10 serves to couple a diver&#39;s whip or umbilical segment to service hoses in a reliable manner free of liklihood of unintentional decoupling. Yet the diver is readily able to quickly effect disconnection by simply rotating the retainer pin 38 a quarter turn and pulling on it. The spring member 48 flexes to its rest condition causing separation of the bodies 12 and 22 and the associated coupling halves to be initiated. 
     Obviously, other embodiments and modifications of the subject invention will readily come to the mind of one skilled in the art having the benefit of the teachings present in the foregoing description and the drawing. It is, therefore, to be understood that this invention is not to be limited thereto and that said modifications and embodiments are intended to be included within the scope of the appended claims.