PIPE JOINT

RACCORD DE TUYAUTERIE

English Abstract

ABSTRACT OF THE DISCLOSURE
A pipe fitting comprising a male member and a female
element, the element having a wide section of a diameter greater
than the diameter of the male member. An integral sleeve is
provided on the element substantially parallel to the wide section
and spaced inwardly thereof. The sleeve and the wide section
together form a groove. The male member slides into the groove
to form the joint. In the preferred form of the device, a
retainer is provided on the wide section. The retainer is of
ring shape and is of greater diameter than the section. Within
the retainer is a sealing ring which bears against the outer
wall of the male member.

Claims

The embodiments of the invention in which an exclusive
property or privilege is claimed are defined as follows:
1. A pipe joint comprising:
a male member having a substantially constant cross-
sectional diameter at least at an end thereof;
a female element having a peripheral wall encirclingly
defining a cross-sectional diameter thereof substantially the
same as that of said male member, and said wall including an
end portion unitarily and continuously extending therefrom and
having a cross-sectional diameter greater than the diameter of
said male member end for receiving the male member end within
the widened end portion of the female element wall to form a
joint therebetween;
an integral sleeve on said female element spaced
peripherally within and axially extending substantially parallel
to the widened end portion thereof, said widened end portion
extending axially at least as far as said sleeve, and said
sleeve and widened end portion defining therebetween an interior
groove for accomodating said end of the male member to form the
joint;
a retainer on said widened end portion of the female
element wall;
a sealing member carried in said retainer so as to
bear against the male member end received within said female
element for effecting a substantially fluid tight seal there-
between and for enabling relative axial movement between the
male member and the female element while maintaining said
substantially fluid-tight seal; and
means on said sleeve for facilitating entry of said
male member end into said groove.

2. A pipe fitting according to claim 1, said means
comprising a radially inwardly-directed taper at the end of said
sleeve.
3. A pipe joint according to claim 1, said sleeve including
a beveled end on its radially inwardly-directed surface for
facilitating a smooth and unencumbered flow of fluid passing
between the joint formed of said male member and female element.
4. A pipe joint according to claim 1, said widened end
portion extending axially beyond said flange.

Description

I~ES~RIPTIOM OF T~IE I~JV_TION
The present invention is directed to an improved joint
for pipe, more specifically for pipe made of plastic.
In the past, it has been known to join two pieces of
pipe toyether b~ various means. For example, the male half is
sometimes formed with a taper at the end which fits into the
Eemale member. Such joints are operative, but lack flexibility
and ti~htness. Modifications of such joints include those in
which a flange is provided on the outer member which contains a
sealing ring. l'he ring bears against the inner member and sub-
stantially prevents leakage. Even such joints, however, have
no axial flexibility. The inner portion must be forced into
the outer one as far as it will go in order to obtain a tight
seal and a Eirm joint.
In prior art devices of this general character, there
is usually a gap between the end of the male member and the
shoulder of the female member. This gap provides a hollow which
encourages the deposit of any solids entrained in the fluid flowing ~ -
in the pipe. As a result, such joints are subject to being
clogged and the flow therethrough restricted.
It is, therefore, among the objects of this invention
to provide a pipe joint which has substantially smooth inter~or
walls and which will minimize deposition and build-up of any
entrained solids.
It is also among the objects of the present invention
; to provide a pipe joint which not only seals well, but permits
axial adjustment.
To this end, in one of its aspect, the invention pro-
vides a pipe fitting comprising a male member and a female
element in which the female element has a wide section of diameter
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1 greater than the diameter of the male member and an inteyral
sleeve or flange substantially parallel to the wide sectiGn ana
spaced inwardly thereof thereby forming a groove therebet~7een
into which the male member is inserted.
In another of its aspects the invention further
provides a pipe fitting comprising a male member and a female
element in which the female elemen-t has a wide section of diameter
yreater than the diameter of the male member and an integral
sleeve or ~lange substantia]ly p~rallel to the wide section and
spaced inwardly thereof thereby forming a groove therebetween
into which the male member is inserted, and, in which pipe
fitting a retainer is provided on the wide section of the female
element and a sealing ring in the retainer whereb~ the sealing
riny bears against the outside of the male member to effect a
seal.
In carrying out the present invention, a male member
and a female element are provided. The element carries a section
on its end which is wider than the mean diameter of the element
and, of course, also wider than the outer diameter of the male
member. The element also carries an integral sleeve-like
extension or flange substantiall~ parallel to and spaced inwardly
from the wide section. Preferably, the base of the flange is
at substantially the same point as the base of the wide section.
The flange and wide section between them form a groove into which
the male member fits.
~ retainer, consisting of a portion of the section of
greater diameter than the remainder thereof, is provided on the
wide section. Within the retainer, a sealing ring is positioned
so that, when the male member is in the groove, the inner sur-
face of the ring bears against the outer wall of the member.In this manner, the seal is e~fected.
Further objects and advantages of the invention will
appear from the following description taken together with the
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1 accompanying drawings consti-tu-ting a par-t hereof, in which like
reference characters indicate like parts, and in which
Fig. 1 i5 a perspective view of the joint of the
presen-t invention;
Fig. 2 is a section along line 2-2 of Fig. l;
Fig. 3 is an enlarged fragmentary sectional view of
one embocliment of the present invention; and
Fig. 4 is a view similar to that of Fig. 3 of another
modification of the present invention.
~eferring more specifically to Fig. 2 of the drawings,
pipe joint 1 is composed of male member 2 and female element 3.
Element 3 is provided with wide section 4 and flange 7 which
together form groove 8.
As may be seen from the Fig. 2, the flange 7 preferably
comprises a sleeve integral to the female element 3, which
integral sleeve extends axially in the same direction as the wide
.
section 4 and is radially spaced inwardly of the wide section 4.
In addition, section 4 contains retainer 5 which holds
sealing ring 6 in place~ Sealing ring 6 bears against outer wall
10 of member 2 in order to form the desired seal.
In one form of the invention, flange 7 is provided with
taper 9. This facilitates the entry of member 2 into groove 8.
In the form of the invention shown in Fig. 4, flange 7
is straight and parallel to section 4. Member 10 fits into
yroove 8 in the usual manner. It is preferred to provide an
inward facing bevel 11 at the free end of flange 7. Thus, when
the joint is complete, the flow of fluid is as smooth as possible.
As a result, the tendency of entrained solids to deposit and
build up at this point is minimized~
It is also a feature of the present invention that it
is unnecessary for the end of memb0r 2 to actually contact the
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1 ~otbom of groove 8. Since the seal is effected by ring 6 in retainer
5, a substantial amount of axial adjustment i5 permitted without
any loss of fluid tightness.
While only a limited number of specific embodiments of
this invention have been expressly described, it is nonetheless,
to be broadly construed and not to be limited except by the charac-
ter of the claims appended hereto.