Pipe joints or couplings – Essential catch – Operated by conduit motion
Patent
1998-07-02
1999-11-23
Arola, Dave W.
Pipe joints or couplings
Essential catch
Operated by conduit motion
285256, 285319, 285906, 285921, F16L 3708
Patent
active
059887044
DESCRIPTION:
BRIEF SUMMARY
The invention relates to a hose coupling device, comprising a male part and a female part, which are interconnectable.
Many different types of couplings are known, which are intended to interconnect two hose-pipes or a hose and a tube. However, all the known embodiments have that in common, that one coupling part, which for example is attached to the end of a hose by a hose clamp, forms a protruding part at the end of the hose. This protruding part is provided with means for connecting the end of the hose to another coupling part which is mounted on a tube or another hose. Known hose coupling types can therefore be seen as unnecessarily complicated and hence expensive constructions.
According to the invention, a hose coupling has been provided, in which the female part is insertable into the end portion of a hose and said female part is provided with means for holding the male part after the insertion thereof into the female part. Hence, a very compact hose coupling is provided, which is reliable and at the same time cheap to manufacture. The characteristics of the device according to the invention are described in the appended claims.
In the following, the invention will be described in more detail with reference to the accompanying drawings, in which
FIG. 1 is a longitudinal sectional view of a female part according to the invention and a lateral view of a male part according to one embodiment of the invention,
FIG. 2 is a longitudinal sectional view of the same female part as in FIG. 1 and a lateral view of a male part according to a second embodiment of the invention,
FIG. 3 is a longitudinal sectional view of a female part according to a second embodiment of the invention and a lateral view of a male part according to a third embodiment of the invention,
FIG. 4 is a lateral view of a female part and a male part according to the same embodiment as in FIG. 3,
FIG. 5 illustrates one embodiment comprising two male parts which have been joined together as seen in a lateral view and a first female cart as seen in a lateral view for connection from the left as seen in the figure and a longitudinal sectional view of a second female part for connection from the right as seen in the figure,
FIG. 6 is a lateral view of a male part according to a fourth embodiment,
FIG. 7 is an end view of the same embodiment and
FIG. 8 illustrates on a larger scale and schematically a part of the male part in order to illustrate its possibilities of turning within the female part.
According to the invention, the device comprises a female part 1, the main component of which is a sleeve 2, which may be made for example of a tube of sheet metal or of extruded plastics. This sleeve 2 is provided with several resilient tongues 4 uniformly spaced around the inner wall of the sleeve 3, which in the embodiment illustrated are equally spaced from the mouth 5 of the sleeve 2 and directed away therefrom and protruding inwards somewhat from the inner wall 3. Preferably, the resilient tongues 4 are made by punching of slits 6 in the wall of the sleeve 3. At its inner portion, as seen from the mouth 5, the sleeve 2 is provided with a bead 7. When applying a hose 8 over the sleeve 2, the bead 7 forms a ring-shaped external stopping edge, which penetrates into the hose material. An outer sleeve 9 is applied over the end of the hose and is pressed to holding around the end portion of the hose. The material of the hose 8 will then on the one hand be lockingly compressed around the bead 7, and on the other hand, resiliently press the tongues 4 somewhat into the sleeve 2 and increase the spring force thereof. Inside the sleeve 2 the bead 7 forms a ring-shaped track, into which a sealing ring 10 is applied. Hence, the female part 1 will mainly be built into the end portion of the hose 8.
The male part 11 in FIG. 1 is a tube part, which is provided with a number of transverse edges 13, corresponding to the number of resilient tongues 4, in its outer wall 12. These transverse edges 13 may for example be formed by the cutting off of material in the out
REFERENCES:
patent: 4696497 (1987-09-01), Schwarzensteiner
patent: 4969668 (1990-11-01), Sauer
patent: 4978149 (1990-12-01), Sauer
patent: 5082315 (1992-01-01), Sauer
patent: 5215339 (1993-06-01), Morse et al.
ABA of Sweden AB
Arola Dave W.
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