LU81878A1 - SPRING TAP FOR FLUIDS - Google Patents

Description

D-79 / SO

»Y -“ ---— · - GRAND-DUCHY OF LUXEMBOURG

I O f ......... · 0 · ® .............. (¾¾¾¾ Minister

Title issued · from the National Economy and the Middle Classes __ Industrial Property Service

LUXEMBOURG

Patent Application I. Application

Angela Pagani, Ponte San Marco, Brescia, Italy, represented .p.ax ... Jean ..... Waxw.e.tle.r »21-25. Allée ..... Sc.he.ffe.r.,. LAixembourg ..,. A £ i.ssa.nt en .......

of representative (2) files ceneuf .november one thousand nine hundred and seventy-nine (3) at ........ hours, at the Ministry of National Economy and the Middle Classes, in Luxembourg: 1. this request for obtaining a patent for an invention concerning: ..................................... .................................................. .................................................. .................................................. .................................................. .......................................... (41

Spring valve for fluids.

If declares, assuming responsibility for this declaration, that the inventor (s) is (are): ........................ .................................................. .................................................. .................................................. ............................. ·; ................... .................................................. ... (5)

Angela Pagani, Ponte San Marco, Brescia, Italy 2. the delegation of power, dated ........... Bx.eSCÎ Q ................ ............... _______ 5_JDß3L ^ IRbre__197.9 3. description in language ................ £ X.anç a Î S e ............................ of the invention in two copies; 4 ........... 1 ................... drawing boards, in two copies; 5. the receipt of the taxes paid to the Registration Office in Luxembourg, on .... new --..- nov. Erobre .... mid ....... new ..... cent. seventy nine......................................... ..............................

claims for the above patent application the priority of one (s) request (s) of (6) ........................... ............ (..................................... .................. filed in (7) ................... 1 .... .................................................. .................................................. ..

the ................................................. .................................................. ..y ............................................... ...............................-.................. .................................................. ................. (8) on behalf of ........................... .................................................. .................................................. .................................................. .................................................. ................... (9> elect domicile for him / her and, if designated, for his / her representative, in Luxembourg .......... ..............................

Jean Waxweiler, 21-25 Allée Schef fer .Luxembourg ....................................... ........................... fl0i requests the grant of a patent for the invention for the subject described and represented in the abovementioned appendices, - with postponement of this issue to ..................................... month.

^ The ................. proxy .........................

II. Deposit Minutes

The above application for a patent for invention has been filed with the Ministry of National Economy and the Middle Classes, Industrial Property Service in Luxembourg, dated: 09.11.1S79

TT

3 βγ. the Minister of National Economy ^ * of the Middle Classes.

/ y /: _ - £ --------- D-79/50!

DESCRIPTIVE MEMORY

FILED IN SUPPORT OF AN APPLICATION

of invention patent IN THE GRAND DUCHY OF LUXEMBOURG

SPRING TAP FOR FLUIDS.

ANGELA PAGANI

i

The present invention relates to a spring-loaded valve for fluids, for example a gas valve, of the pass-through type in which the opening and closing conditions are obtained by means of a 90 ° rotation of the operating button which controls the movement of a shutter carried by a slide.

Valves of this type are already known which consist of a central body provided with connectors for the inlet and outlet conduits, as well as a shutter which is lowered or raised, respectively for; close or open the tap under the action of profiles cb cam and dbction rods integral with the operating button. A helical spring, arranged coaxially with respect to the slide cb Uobtuiateur, ettcujcurs compressed allows the slide h. surface of the actuating rod and the cam profile which has two orthogonal rest grooves and of different heights in order to transform the movement of rotation of the operating button into a movement of vertical translation of the slide carrying the shutter.

The main drawback of these known taps is the notable complexity of such a device which provides for the cooperation of numerous parts which have to be assembled together in order to make the aforementioned movement possible.

20 In fact it is necessary to make the operating button integral with the transverse actuating rod which must then meet cam surfaces which can be provided on the operating button itself or on the control rod or else on a vertical part of the tap.

The high number of components not only increases the production cost but also demands more stringent machining tolerances and the use of various retaining fittings.

These valves, when open, cannot prevent the flow of gas from being interrupted (even momentarily) when pressure is applied in the vertical direction (i.e. from top to bottom) on the operating button.

The object of the present invention is to produce a tap of the type indicated above, consisting of a very limited number of parts and of extreme simplicity, which requires the use of a single hand-piece and which furthermore ensures safety by preventing interruptions 2 of the gas flow even accidentally.

The valve according to the invention offers the advantages set out above as well as others which will be specified in what follows, thanks to the elimination of the actuating rod as a separate physi-cally and independent part, and replacing it with a contact profile made integral with the body of the valve and capable of coupling between the cam surface and the body of the operating button.

An embodiment of the present invention will be described below, by way of non-limiting example, with reference to the appended drawing in which: FIG. 1 is a view in axial section of the valve according to the invention.

Figures 2 and 3 are respectively views from below and in axial section of the spring housing.

FIGS. 4, 5 and 6 are respectively an elevation view of the control plunger 15, a plan view of this plunger and another elevation view of the control plunger, offset by 90 ° with respect to that of FIG. 4.

FIG. 1 shows in axial section a complete tap consisting of a main body 1 provided at its ends with two threaded connections 2 and 3 secured to two channels for the passage of a fluid, communicating with each other through a passage 4 with seat plane and axis perpendicular to that of the two channels. The passage 4 can be opened or closed respectively by raising or lowering an elastic disc or obturator 5 fixed to a slide 6 which is mounted in a part 8 of the valve perpendicular 25 'to the axis of the channels of the body 1 and is actuated by a button 7. The slide 6 has, at its upper part, a cylindrical cavity 11 in which the end portion 12 of a control pusher 13 is tightly fitted, illustrated in detail in FIGS. 4 to 6. The slide 6 has a external flange 20 against which a flange 30 14 of the control pusher is pressed and above this flange 14 the push rod includes another cylindrical portion 15 and an extreme upper portion 16 with square cross section which is introduced under pressure into a housing associated with the operating button 7.

A helical spring 9 is arranged around the slide 6 and it is suitably compressed between the flange 20 of the slide 3 and a washer 23 which is held in position between a shoulder 21 of the part 8 of the body and a housing. spring 30. A washer 23a, resting on a shoulder 22, completes the maintenance of the lower end part of the slide 6, an elastic retaining ring or O-ring 5 2 5 being disposed above the washer 23a.

The spring housing 30 which is illustrated in a more detailed manner in FIGS. 2 and 3, consists of a hollow cylindrical body which has, at its lower part, an edge 31 provided with a tooth 32 for positioning. .At its upper part it ends with a transverse closing surface 10 or bottom 33 which is pierced with a hole 36 for the passage of the cylindrical part 15 of the control pusher. On the internal part of the closing surface 33 is a semi-cylindrical rib 34 extending diametrically and interrupted at the location of the central hole 36. On the external part of the closing surface 33 are two small teeth 35 .

The spring case 30 can also be made of light alloy, by pressure molding, all the parts indicated then being obtained from molding with sufficient precision and requiring only finishing operations. The rib 34 has a semi-circular section and 20 during operation it bears against the cam-shaped profile of the flange 14 of the control pusher. More precisely, this profile 17 constitutes a connection between two deeper grooves, extending from the external surface of the pusher 14 to the surface of the cylindrical part 15, and two upper notches 19, arranged perpendicularly by 25 'relative to the lower grooves 18, extending in the same way as the latter, the axes of the grooves 18 on the one hand and the notches 19 on the other hand being distant from each other, in the vertical direction, of a length equal to the stroke tap opening. When the tap is found to be mounted, the square section 16 of the horn push button is firmly embedded in the operating button 7 and the rib 34 engages (under the effect of the spring pressure) either in the grooves 18 or in the notches 19 depending on whether the tap is open or closed. In particular, we see in Figure 1 the valve in the open position and in this case the rib 34 is housed in the lower grooves 18. 35 If we turn the knob 7 by 90 0 we obtain a similar rotation of the flange 14 and of the profile forming a cam which then comes to be placed in a position in which the rib 34 engages in the upper notches 19. This produces a lowering in the vertical direction of the slide 6, which results in additional compression of the spring, 5 and closing the passage 4: the "non-not s ante" position is thus obtained. The rotation of the spring case 30 is prevented by the small tooth 32 which engages in a corresponding hollow in the edge of the part 8 k of the body while associated ribs' provided in the body of the operating button 7 cooperate with the teeth 35 to limit the rotation of the button at an angle of 90 °.

From the foregoing description it is evident that, by connecting the cam profile directly to the operating button and by making <<the spring housing of the valve body, by rolling or discharging the circular edge 37 of the body 1, it is possible to eliminate the presence of the transverse actuating rod (made integral with the operating button) from known valves and to replace it by the rib 34 which is obtained in one piece with the spring housing. This illustrated position of the cam prevents any possibility of axial movement of the slide 6 and therefore of the shutter 5. It is understood. . .

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Claims (5)

5 1. Spring-type pass-through valve for fluids, in which a slide bearing a shutter is raised or lowered by rotation of an external operating button, under the combined action of a cam profile carried by a control rod disposed coaxially with the slider and a helical spring disposed at-, turn of this slider, characterized in that the surface cameaioontect with the cam profile is made as a rib provided on the upper internal surface a spring housing in the form of a hollow cylinder 10 coaxial with the slide and in that the control rod is inserted by pressure into the body of the operating button. % · 2. Tap according to claim 1, characterized in that the spring housing is constituted by a cylindrical sleeve provided at one end with a closing surface pierced with a hole to allow the passage of the control rod, the rib transverse being interrupted by the hole drilled in this closure surface, and in that on the external face of the closure surface are provided, in correspondence with said rib, two projections which cooperate with corresponding ribs of the body of the operating button to limit the angle of rotation of the latter. 3. Tap according to claim 2, characterized in that the control rod consists of an upper part with rectangular section or, square for the pressure engagement in the body of the actuating stub, a cylindrical central part is ending with a collar pre-25 sensing the cam profile and a cylindrical lower part intended to - be housed in a cylindrical cavity of the slide. 4. Tap according to any one of the preceding claims, characterized in that the hollow spring housing estmaintenu integral with the valve body by rolling or discharge of the circular edge of the body 30 which surrounds it. 5. Tap according to any one of the preceding claims, characterized in that the cams constitute a safety member not allowing the slide to execute impromptu or accidental axial movements capable of interrupting the flow of gas.