US2337771A - Energizer - Google Patents

Description

Dec. 28, 1943. c, E, ROBERTS 2,337,771

ENERG I ZER Filed Fe'bl 23, 1942 c1. IFFORO E. Roar/P725,

Patented Dec. 28, 1943 ENERGIZER Clifford E. Roberts, Joppa, Md., assignor to The Glenn L; Martin Company, Middle River, Md., a corporation of Maryland Application February 23, 1942, Serial No'. 432,093

2 Claims. (Cl. 138-80) This invention relates to an energizer and more particularly to a hydraulic fluid accumulator for particular use with aircraft to insure a source of hydraulic pressure in cases of emergency.

elastic or non-elastic fabric impregnated with an oil resistant material having the properties of these products. a

The bottle is charged through its valve with It is well known that in modern aircraft many 5 compressed air, while the inner envelope is in items of equipment therein, such as locks, cendeflated condition, and in use, when the bag is tering devices, brakes, retractable landing gears subjected to hydraulic fluid or oil pressure, it will and the like, are operated by means of hydraulic H inflate and compress the air in the bottle to a fluid pressure. These systems are maintainedat degree wherein the hydraulic fluid pressure is the desired pressure by means of power driven equalized with the air pressure.

- pumps, pistons and the like. In systems of this Thus, in the event of an emergency, as where character, it is desirable to provide them with the oil pressure line from the pump is ruptured so called pressure equalizers so that in normal or the-oil pump su'ppiying this pressure ceases to use, the pressures of the two fluids used, such function, the pilot of the aircraft has instantly as air and oil, will be equalized and at the same available a source of compressed air pressure for time form a source of emergency energy availenergizing thehydraulic fluid in the system to able for operating the fluid controlled apparaoperate his retractable landing gear or other intuses if the main pressure supply is damaged. strumentality by reason of the energy of the com- In the present invention, an outer steel alloy pressed air within thesteel bottle compressing bottle or container is provided with a valve means the envelope containing the hydraulic fluid. i for filling the same with air. The bottle is fitted A further advantage of the present device is with an interior, collapsible, synthetic rubber or its ability to protect sensitive hydraulic mechaplastic impregnated fabric envelope or cell connisms by preventing hydraulic hammer and nected to a source of oil pressure so that when I dampening flutter in the hydraulic system. oil is introduced into the interiorenvelope, the What I claim is: envelope unfolds or expands and compresses. the 1. An emergency hydraulic pressure supply surrounding air within the steel bottle to a degree comprising a hollow cylindrical container, an imwhere the air pressure is equal to the interior perviousinflatabie bag enclosed thereby, said conpressure of the oil within the rubber bag. When tainer having .an enlarged opening in one end such a point is reached, the air and oil pressures thereof, a removable fitting for said opening to in the system are equalized, and in the event that which the hydraulic pressure line is secured, the hydraulic fluid pressure is decreased, as by a relatively small opening in the opposite end rupture of the oil pump system, the compressed and a conduit connected thereto, through which air in the bottle is available for operation of the compressed air may be introduced into the space hydraulic devices normally acted on by the oil 5 between said container and said bag, an inflatpressure, able, impervious bag for receiving the hydraulic In the accompanying drawing: fluid attached to said fitting and extending into Fig. l is a sectional view, partly in cross secthe said container, the interior of said bag comtion, showing. the inner, collapsible, rubber bag munlcating with the hydraulic pressure system in deflated condition. through said fitting.

Fig. 2 is a similar view after the oil bag has 2. An emergency hydraulic pressure supply been inflated and the air and oil pressures have comprising an elongated hollow container having reached a point of equilibrium. a small fitting at one end for the introduction of Fig. 3 is a vertical cross section through the compressed air and a relatively large opening at bottle and inflated oil bag. the other end, a removable fitting in said large Specifically, the invention contemplates using opening having a passage therethrough coma strong,light-weight steel alloy bottle i suitably munlcating with the hydraulic pressure system, tapped at 2 for the insertion of an air line 3 an impervious, inflatable, elongated bag -general-. controlled by valve 42 The opposite endof the lysimilarly shaped to conform with the internal bottle is provided with an enlarged opening 5 contour of said container mounted on and reand'a suitable coupling 6 joined to the hydraulic movable with said fitting, said bag forming two fluid or oil pressure line 'i which leads to the hychambers within the container, the outer one draulic system of the aircraft. having air under pressure and the inner one hav- An inflatable, elongated, tubular bag or ening hydraulic fluid whereby the compressed air velope 8 is attached to the inner portion of the forces the hydraulic fluid from the bag to the coupling 6 and communicates therethrough -to hydraulic pressure system upon the'tailure of theconduit I. This interior bag is preferably the normal hydraulic pressure source. formed of synthetic, oil resistant. plastic or rubbery material such as neoprene, Thiokol, nylon CLIFFORD E. ROBERTS.

or the like. It may also be constructed of an v

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