IL23291A

IL23291A - Pipe coupling stop

Info

Publication number: IL23291A
Application number: IL23291A
Authority: IL
Original assignee: Eternit Sa
Priority date: 1964-04-10
Filing date: 1965-04-04
Publication date: 1968-11-27
Also published as: NL6504484A; CH439889A; OA01710A; DK112561B; AT261335B; ES311909A1; LU48355A1; BE518974A

Description

'ΓΠΙΙΠ ]T 3 TJlilJ"! '11 PATENT ATTORNEYS · □'□]□£) ' □ PATENTS AND DESIGNS ORDINANCE SPECIFICATION PIPE COUPLING STOP I (we) SOCIETE ANQNYME ETERNIT, A BELGIAN COMPANY, OF KAPELLE—OP— BELC 1194p do hereby declare the nature of this invention and in what manner the same is to be performed, to be particularly described and ascertained in and by the following statement:- The invention relates to a stop or abutment for pipe couplings (or unions), it being the purpose of the said stop to locate and space the ends of the pipes in a sleeve coupling provided with fluid-tight packings.

According to the invention there is provided a stop for pipe couplings, intended to position and space the ends of two pipes in a sleeve coupling provided with sealing packings, characterised in that it consists of a member which is disposc?d partly in a recess formed in the inner face of the sleeve and projects from the said face, its length being limited to a fraction of the circumference of the sleeve.

She stop advantageously has the shape of a segment of a ring having preferably a T-shaped profile the horisontal limbs of which occupy the receos within the sleeve whereas the vertical limb thereof is intended to be interposed between the ends of the pipes. The internal recess in the sleeve is advantageously a circular groove.

The horizontal limbs of the T-shaped profile of the stop comprise a chamfered portion on either side of the vertical limb, so that when a pipe is introduced into the sleeve the end of the pipe contacts the bevelled face before contacting the vertical limb constituting the stop. Thus, the stop is pressed and maintained in the circular groove by the end of the pipe and any risk of dislodging it when a pipe is introduced into the sleeve is eliminated.

As compared v.-ith stops comprising an entire ring, the stop consisting of a segment of a ring has, apart from the obvious advantage of a saving in material, the technical advantage that it permits a greater degree of deflexion in the pipes connected by the couplings and facilitates the placing in position of a pipe system* The accompanying drawings show a preferred embodiment of the invention, by way of example.

Figure 1 is a perspective view of a coupling stop, Figure 2 shows an axial section through a coupling wherein the end of a pipe is engaged and the' end of the other pipe is ready to be engaged, Figure 3 is a section taken along the line III-III of Figure 2.

The stop or abutment for sleeve couplings or unions is made of an a^pasp iat^ material and comprises a segment of a ring 1 the profile of which has the shape of a T the limb 2 of which constitutes the stop proper* The limbs 3 and have, on both sides of the limb 2, a chamfered or bevelled face 5.

The coupling 6 i formed internally with circular grooves of which the end grooves retain the sealing rings 7 whereas the central groove 8 receives the limbs 3 and 4 of the segment of a ring which are engaged therein as a light force fit.

When a pipe 9 or 10 is introduced into the sleeve, deforming the ring 7 so as to establish fluid-tightness, the end of the pipe first of all contacts a bevelled face of the segment of a ring, thus preventing the dislodging of the segment from the groove 8 in which it has previously been inserted.

The pipes are positioned in the coupling when their end contacts the stop 2 which maintains the appropriate spacing between the two pipes in the coupling.

The segment of a ring allox^s the 'pipes complete flexion freedom when the pipe system departs from a straight line and it facilitates the assembly of the couplings.

Of course, the invention is not limited to the embodiment described and illustrated by way of example and the scope of the invention would not be exceeded if modifications were to be made. 23875/2

Claims

A atop for pipe couplings, intended to position and space the ends of two pipes in a sleeve coupling provided with sealing packings, characterized in that it consists of a member which is disposed partly in a recess formed in the inner face of the sleeve and projects from the said face, its length being limited to a fraction of the cir c-unference of the sleeve. 2. Stop according to Claim 1, characterised in that it has the shape of a segment of a ring.
3· Stop according to Claim 2, characterized in that the segment of a ri g has a T-shaped profile the horizontal limbs of which occupy the recess within the sleeve whereas the vertical limb thereof is intended to be interposed between the ends of the pipes.
4. Stop according to Claim 3» characterised in that it is disposed in a circular groove constituting the recess within the sleeve.
5· Stop according to Claim 3> characterized in that the horizontal T-shaped limbs are formed with a bevelled portion on either side of the vertical limb, so that when a pipe is introduced into the sleeve, the end of said pipe contaots the bevelled face before contacting the vertical limb constituting the stop, so as to press and maintain in the circular groove the limb3 lodged in the said groove.
6. Stop for pipe couplings, substantially as described hereinabove and illustrated in the accompanying drawings. S