Source: https://patents.google.com/patent/FR2577005A1/en
Timestamp: 2019-12-16 02:41:38
Document Index: 162735691

Matched Legal Cases: ['ARTS18', 'ARTS22', 'art 18', 'arts 18', 'art\n22', 'art\n18', 'art\n108']

FR2577005A1 - Cardan coupling sleeve for piping systems - Google Patents
Cardan coupling sleeve for piping systems Download PDF
FR2577005A1
FR2577005A1 FR8601499A FR8601499A FR2577005A1 FR 2577005 A1 FR2577005 A1 FR 2577005A1 FR 8601499 A FR8601499 A FR 8601499A FR 8601499 A FR8601499 A FR 8601499A FR 2577005 A1 FR2577005 A1 FR 2577005A1
FR8601499A
FR2577005B1 (en
Horace P Halling
Se Joong Oh
PRESSURE SCIENCE Inc
1985-02-06 Priority to US06/698,693 priority Critical patent/US4643463A/en
1986-02-04 Application filed by PRESSURE SCIENCE Inc filed Critical PRESSURE SCIENCE Inc
1986-08-08 Publication of FR2577005A1 publication Critical patent/FR2577005A1/en
1989-06-23 Application granted granted Critical
1989-06-23 Publication of FR2577005B1 publication Critical patent/FR2577005B1/en
238000010168 coupling process Methods 0 abstract claims description title 43
238000005859 coupling reaction Methods 0 abstract claims description title 43
239000003575 carbonaceous material Substances 0 claims 1
238000010257 thawing Methods 0 abstract 1
F16L27/0849—Adjustable joints, Joints allowing movement allowing adjustment or movement only about the axis of one pipe the fluid being turned through an angle when passing from one joint element to another
F16L27/0857—Adjustable joints, Joints allowing movement allowing adjustment or movement only about the axis of one pipe the fluid being turned through an angle when passing from one joint element to another with hinge and bellows sealing
<P> THE INVENTION CONCERNS A CARDAN COUPLING SLEEVE FOR PIPING SYSTEMS. </ P> <P> THIS CONNECTING SLEEVE CONNECTING TWO PIPES12, 14 COMPRISES A CARDAN10 SYSTEM CONNECTING PIPES IN A FLEXIBLE MANNER AND FLEXIBLE MEANS 26 CONNECTING THE PIPES IN A FLUID-RELATED MANNER, SAID SYSTEM10 INCLUDING A FIRST AND A SECOND SPHERICAL PARTS18, 22 RIGIDALLY RELATED TO THE RESPECTIVE PIPES12, 14 AND SURROUNDING EACH PART OF THE FLEXIBLE MEANS, AND A RING 24 ACCOUPLE TO THE SPHERICAL PARTS22 AND SURROUNDING THESE BY AN INNER SURFACE OF A DIAMETER SLIGHTLY EXCEEDING THE DIAMETERS OF THE EXTERNAL SURFACES OF THESE PARTS. </ P> <P> APPLICATION IN PARTICULAR TO THE SYSTEMS OF AIR PIPING OF DEFROSTING COMPRESSORS IN AIRCRAFT. </ P >
Cardan coupling sleeve for channeling systems
Flexible seals or couplings for tensile piping systems are used to a large extent in intake pipe systems, particularly in purge air lines
compressors and in the anti-icing lines.
Although we know different types of sleeves-fittings
flexible, they have several disadvantages.
First of all the spherical couplings-couplings ty-
with a certain flexibility, trans-
put the axial tensile load produced by a pressure
sion, via a seat having a relatively large radius of curvature. Since the couple
resisting the coming in oblique position is pro-
proportional to the product of the axial force, the coefficient of friction and the radius of curvature of the support surface,
the high radius of curvature of the seat provides a sleeve
rigid cord. Such rigid coupling sleeves are undesirable
because, although they allow a rotation to adapt to a deflection of the pipes,
they impose high bending moments on the canalisa-
end fittings and fittings, which may lead to
inadmissible constraints at the level of
these of the engine, heat exchangers, structures of
aircraft cells and the pipes themselves.
Flexible coupling sleeves are also known
who are trained by a cardan system
either an inner cardan ring or a cardan ring ex-
TER AL. If the cardan ring is in the inner position,
it is subject to significant downturns, which
requires the use of a stronger ring. In the case
coupling sleeves having outer universal joints
the ring does not cover and therefore does not protect
not the inner seal coupling the canalisa-
and does not establish a secondary secondary seal
both a leak in the case where the primary seal
Examples of these couplings-fittings of the art
are described in the following US Patents: No. 656,667 to Schmid, No. 2,613,087 to Alford, No. 3,219,365
attributed to Webb and No. 4,165,107 to Affa et al.
Furthermore, such a connecting sleeve of the prior art is de-
written in British Patent No. 2,107,816 to Ward.
This is why a main goal of this
The purpose of the invention is to provide, for piping systems, a flexible gimbal sleeve which does not require a solid universal joint and provides protection for the
internal seal coupling the pipes.
Another object of the invention is to provide a man-
Cardan coupling, which has a secondary seal to limit leakage during a failure
primary seal.
chord-coupling to the gimbal, in which the cardan system
supports the entire axial load inside the man-
chon-fitting and thus provides a weak moment
health and superior flexibility.
The objectives indicated above are achieved
basically thanks to a flexible coupling sleeve to the Car-
dan for first and second pipes,
rised in that it includes a cardan system coupled to
first and second pipes and allowing a coupling
flexible reciprocal relationship of these lines, and a
flexible seal coupled to the first and second cana-
and used to connect the latter in a fluid-tight manner, the gimbal system comprising a
first spherical part rigidly coupled to the canali-
surrounding and surrounding a portion of the flexible gasket
ble, a second spherical portion rigidly coupled to the second channel and surrounding another portion of the joint
flexible seal, and a coupled ring with
pivoting tee at the first and second spherical portions and having an inner surface in the form of a spherical portion having a diameter slightly greater than the diameters of the outer surfaces of the first and second spherical portions, the inner surface surrounding at least a portion of the surface outer first and second
spherical parts.
Since the outer gimbal ring is distant from the spherical parts in the gimbal system,
the latter only supports the axial load in the sleeve-
fitting, which provides a weak flexing moment. Being
given that the cardan ring is located outside the
spherical elements, the coupling sleeve is easy to assemble and
the ring can be relatively light.
In addition, since the outer cardan ring
the spherical parts, a secondary seal is obtained which limits the leak in the case o
the primary flexible seal fails.
The spherical parts can be made with
free edges having an essentially sinusoidal shape
dale, quishccoupler and limit the pivoting movement
spherical parts when they come in contact.
In Figures 1 to 5 annexed to this
mande, a first flexible gasket has been shown
which is in the form of an essential bellows-
cylindrical. A second embodiment of the seal is shown in Figure 6, appended to the
present application and that this seal
elastic sealing ring contacting with possible
sliding ability an annular sealing surface of carbon graphite.
As used herein, the term "spherical portion"
"refers to an element constituted in the form of a
sphere and the term "mating", used for the purpose of
the free ends of the spherical parts,
interlocking and not meshing by reciprocal contact
complete cure.
Other features and advantages of the pre-
invention will emerge from the description given below.
after reference is made to the accompanying drawings, in which: - Figure 1 is a longitudinal sectional view,
in elevation, the flexible coupling sleeve to the Cardan according to
me to the invention, this connecting sleeve being shown in a non-bent or bent state; FIG. 2 is a view in longitudinal section and in lateral elevation, similar to that of FIG. 1,
except that the connecting sleeve is bent or bent over one year
a; FIG. 3 is a longitudinal sectional view
exploded, on a reduced scale, in lateral elevation, of the man-
flexible cardan coupling, shown in Figure 1;
FIG. 4 is a perspective view on a
the reduced of the first and second spherical parts con-
the flexible cardan coupling sleeve, in the
couple; FIG. 5 is a reduced scale, side elevation and partial sectional view of the cardan flexible coupling sleeve shown in FIG. 1; and - Figure 6 is a longitudinal sectional view
partial elevation of a variant of
the flexible gimbal coupling according to the
tion, the seal including a sealing member
Inner annular ring contacting internally, with pos-
slipability, an annular sealing surface
in carbon-graphite.
Here we will give a detailed description
As can be seen in Figures 1-5, the man-
flexible gimbal connector 10 according to the invention
performs universal coupling between first and second
of pipes 12 and 14, so as to allow rotation
around two perpendicular axes, which are both
transverse to the longitudinal axes of the channels
tions. The Cardan coupling sleeve is fundamentally
first tube rigidly coupled to the first
a first spherical part 18 extending axially
from the first tube, a second coupled tube 20
rigidly to the second channel, a second spherical portion
22 extending axially from the second tube and
killed in a mating arrangement with the first par-
spherical tie, an outer cardan ring 24 surrounding the
spherical parts, a flexible gasket 26
rigidly to the first and second pipes and
linking these and four axes forming pivots 28-31 rac-
cording with possibility of pivoting the spherical parts
to the outer ring.
As can be seen in Figures 1-4, the first
tube 16 is welded along an annular weld line
32 to the first channel and the first spherical portion 18 extends rigidly from said tube. This spherical portion has a central opening 34 coaxial
to the central longitudinal axis of the first tube and its
essentially with the axis of the latter, the first spherical portion having an exitior surface 35 made
in the form of a sphere part whose central axis is
with the longitudinal axis of the first tube. In a similar way
the first spherical portion 18 has an inner surface 36 which has the shape of a sphere portion
whose central axis coincides with the central axis of the first tu-
be. The first spherical part comaporte a free edge si-
which is essentially in the form of a continuous sinusoidal corrugation with indentations
38 and 39 diametrically opposed and essentially symmetric
diameters 40 and 41 diametrically opposed and essen-
tially symmetrical.
As can be seen in FIGS. 3 and 4, the flange 40 has a transverse bore 42 while the bead 41 has a transverse bore 43, these bores being diametrically opposed and coaxial. This axis defines a pivot axis around which the first spherical portion 18
and the first pipe 12 pivot in the sleeve
Cardan cord, as will be described in more detail.
cut below.
The second tube 20 as shown in the figures
gures 1 and 2 are rigidly coupled to the first channel
along a circular weld line 46 and the se-
spherical portion 22 extends rigidly along the
axial rection from this tube, being made of a
alone holding with the latter. The combined set of the second tu-
be and the second spherical part is essentially identical
to the combined set of the first tube and the first spherical part, but they are rotated 90 around
the longitudinal axis of these. That's why, like this
the is visible in Figure 3, the second spherical portion
22 has a central opening 48 which is coaxial with the first
tube, an outer surface 47 and an inner surface
50, both of which have axes that coincide
tooth with the central axis of the second tube and are parts of a sphere. The second spherical portion also has a free edge 51 which is sinuous and approximates the shape of a continuous sinusoidal ripple including a pair of recesses 52 and 53 diametrically opposed and a pair
diametrically opposed flanges 54 and 55, the flanges
sedant respectively transversal and coaxial drilling
56 and 57. The axis of these holes defines a second axis of axes.
around which the second spherical portion 22 and the second pipe 14 pivot in the coupling sleeve to
Cardan, this axis being perpendicular to the axis of the
42 and 43 formed in the first spherical portion and
tersectant these axes. The intersection of these axes is at
level of the centers of the spherical parts.
As shown in Figures 1, 2 and 4, the free edges 37 and 51 of the first and second spherical portions 18 and 22 mate or adapt to the point that the two flanges on the first spherical portion are housed in the two recesses in the second
spherical part and that the two flanges on the second
spherical portion are accommodated in the two recesses on the first spherical portion, although the free edges of said spherical portions do not contact each other.
the unchanged state.
As can be seen in FIGS. 1-3, the flexible seal 26 is in the form of a
substantially cylindrical bellows having
opposite end nines 59 and 60, which are coupled
rigidly through annular welding lines.
respective ones 61 and 62 to the inner surfaces of the
first and second tubes. So, since the first and
second tubes are coupled rigidly to the first and second
duct count, the flexible seal shaped
bellows 26 is also rigidly coupled to these
lizations, links them together and forms between them a
fluid seal. -
The outer cardan ring 24, as shown in
1-3, is circular and is constituted by a first half-ring 64 and a second half-ring 65, these half-rings being placed in mutual contact according to a
tight fit so as to form the ring 24 such that
sible in FIGS. 1 and 2.
As can be seen in Figure 3, the first
The first half-ring 64 has an annular shoulder 68 at its free axial end, an inner cylindrical bore 69 extending axially inwardly from the annular shoulder, a second annular shoulder 70 extending radially inwardly. inside from the piercing
cylinder and an inner surface 71 made in the form of
me of a spherical part. This spherical part comprises
an axis which coincides with the longitudinal axes of the first
first spherical portion 18, of the first tube 16 and the first
rear channel 12, whose position is not bent or
is shown in Figure 1. In addition, the diameter of
this inner surface 71 is slightly greater than the diameter
meter of the outer surface 35 of the first spherical portion
18, the clearance between these surfaces being between
2.54 × 10-5 and about 12.7 × 10 -5 m. This game is essential-
uniformly and is in itself an integral part of a
As can be seen in FIGS. 1 and 3, the first half-ring 64 has four transverse bores
72-75 distributed directively in a uniform and
swam radially through the half-ring from
cylindrical pledge 69 and having identical diameters.
As can be seen in Figure 3, the second
half-ring 65 is similar to the first half-ring and
carries an annular shoulder 77 at its end
axial axis, an inner cylindrical surface 78 'extends
axially inward from the shoulder
nular and an inner surface 78 extending from
the surface 78 'and an annular flange 79 on its outside.
The annular surface 78 has the shape of a part of spherical
re and has a diameter substantially equal to the diameter
of the inner surface 71 located in the first half
ring. This inner surface 78 and the surface 78 'also have an axis substantially coinciding with the axis of the second tube 20 and the second channel 14. Its diameter is also greater, from about 2.54 × 10 to about
12.7.10-5 m, the diameter of the outer surface of the
spherical part count 22. Four transverse cuts 80-
83 distributed circumferentially equally, are
in the second half-ring so as to be aligned with the four holes in the first half-ring, these holes having the same diameter. The spherical parts
Inner areas of the ring have the same center, which is also
the center of the spherical parts 18 and 22.
As can be seen in Figures 1-3,
The bushings 85-88 are fixed rigidly respectively in
holes 42 and 43 formed in the first spherical portion
18 and in the holes 56 and 57 made in the second
spherical portion 22.
The four axes forming pivots 28-31 perform the assembly of the sleeve with the gimbal. Thus the first pivot axis 28 is housed in aligned holes 72 and 80 in the first and second half-rings and is housed with the possibility of pivoting in the sleeve 85 mounted in the bore 56 formed in the second spherical portion. This
pivot axis as well as the other three axes forming
your votes include an enlarged head 89 which is housed
rigidly in the holes in the ring 24.
In addition these enlarged heads can be welded to the ring.
The lower part or rod 90 of the pivot pin 28 is smaller than the enlarged head and is housed in the sleeve so as to allow the pivoting of the spherical portion
carrying the associated socket and the pivot shaft, and by
24. The second pivot axis 29 is rigidly housed in the holes 74 and 82 formed in the first and second half-rings and is housed with possibility.
pivoting in the socket 86 provided in the second part
22. The third axis pivot 30 is housed
rigidly in the holes 73 and 81 formed in the first
first and second half-rings and is accommodated with the possibility of
pivoting in the sleeve 87 formed in the first part
18. In a similar manner the fourth axis forming
pivot 31 is housed rigidly in the holes 75 and 83
in the first and second half-rings and is rotatably housed in the sleeve 88 in the
first spherical portion 18.
The first and second axes forming pivots 28 and 29 are coaxial and define a pivot axis about which the first spherical portion, the first tube and the first pipe pivot, this displacement contributing
the cardan operation of the cardan coupling sleeve.
In addition the third and fourth axes forming pivots 30 and 31 determine a second axis perpendicular to the first and around which the second spherical portion, the second tube
* and the second channel rotate. These axes, around
which two spherical parts rotate, are perpendicular
and coplanar and intersect at the center of the year.
water and spherical parts.
As shown by a comparison of FIGS.
1, the assembly of the coupling sleeve to the gimbal 10 is rela-
very simple. Thus, the flexible seal is welded
bellow 26 at the first and second tubes and
the recesses and flanges on the
spherical elements in the coupling position, without their
free edges do not contact each other. Then we bring closer axial-
first and second half-rings 64 and 65 until they fit over the series of holes in the spherical parts, and are rotated until the holes in these half rings are aligned. Then we introduce the four axes forming pivots in the half-rings and in the holes in the spherical part. We weld the axes forming pivots
half-rings, as necessary. In an analogous
The first and second coupled half-rings can be welded to one another. Finally, weld the tubes or
otherwise connects to the pipes.
In this assembled state shown in the figure
1, the ring 34 constituted by the first and second half-years
64 and 65 has an axial length substantially equal to the combined axial lengths of the spherical portions and surrounds them. Thus the ring protects the flexible seal 26, which otherwise would be in the disengaged state through the sinusoidal gap space present between the coupled free edges of the spherical portions. In addition the clearance between the inner surface of the ring and the surfaces
of the spherical parts has the effect that the whole
the axial load applied to the pipes can be supported by the axes forming pivots, while this weak game
provides a secondary seal limiting leakage of fluid
from in the pipes if the primary seal
flexible 26 was failing.
Since the surfaces of the ring 24 are
of the four axes forming pivots tend to be
maximum material deflection during the function
of the coupling sleeve, it is possible to perform the
24 so that it is not perfectly circular, and thus allow a more intimate fit around the
spherical parts and allow the ring to act in the
of an alignment spring for the spherical parts.
This can be achieved by moving the
from the ring next to the holes or by giving one more
length to the heads of the pivot axes and
pushing the areas of the holes outwards.
As shown in FIG. 2, when the first pipe 12 flexes or tilts relative to
at the second channel 14, the flanges and recesses
on the free edges 37 and 51 on the parts
spherical can mesh with each other. Thus the inclination
its maximum of one duct with respect to the other is
when these free edges mesh mutually with each other
the effect of the pivoting movement occurring between them.
Hereinafter, we will describe the formine of realization of
Referring now to Figure 6, we see
a flexible coupling sleeve with the Cardan 100 slightly modified
which is basically the same as the coupling sleeve 10 described above and shown in FIGS. 1-5, except that the arrangement of the outer gimbal ring 101 and
flexible seal 102 is different.
In this embodiment, there is a first
first channel 103 and a second channel 104, a
first tube 105 and a second tube 106, and a first part
spherical portion 107 and a second spherical portion 108.
tubes and spherical parts' are essentially identical
those described above with reference to the form of
The outer cardan ring 101 has a first
first half-ring 110 and a second half-ring 111, which are
coupled to each other in a tight fit. Meadow-
The first half-ring 110 has an interior surface 112
born inward and which has the shape of a sphere part and, similarly, the second half-ring has
an inner surface 113 made in the form of a
Each of these inner surfaces has a larger diameter, between about 2.54 × 10 m and about 12.7 mm. 10 5m, at the diameter of the outer surface of the first and second spherical portions 107 and
108. In this embodiment, only the first half
ring 110 has axes forming pivots rigidly housed in itself (only the pivot axis 115 is shown) and
connected with the possibility of rotation to an appropriate hole
and a socket in the second spherical part
108. Since the first half-ring 110 is thicker when it receives the pivot axis 115, the two
half-rings of the embodiment of FIGS. 1-7, the
Water 101 is generally more robust.
The flexible seal 102 comprises,
not a bellows, but, instead, a sealing device
annular tee 117 which is formed of a metal and is resilient, and an annular sealing surface 118 along which the seal member is slidable and is inserted in a snug fit. This flexible sealing device is de-
written in US Pat. No. 4,448,449 issued to Halling and
spells. The annular sealing member 117 has a curved outer surface, in the axial direction and
is supported, below this surface, by means of a
annular ring 119 of similar configuration, which is often
adapted to the second tube 106 along the
annular sealing ring. Although this is not special
cifically represented to preserve the clarity of the drawing,
there is a slight gap between the annual surface area
re of the sealing member 117 and the annular surface ex-
the liner 119, allowing deformation
internal elastic member of the elastic sealing member,
that it is inserted inside the sealing surface
nular 118.
This surface 118 is formed by a cylindrical ring
is preferably made of carbon-graphite, although it can also be made of a metal. This ring
is held longitudinally in place in a
formed in an annular support member 121, via a split locking ring 122, the
support 121 being in turn rigidly coupled to the first
first tube 105 through an annular weld seam
appropriate nular. In addition, an annular flow-promoting liner 123 may be welded to the backing member.
port 121 so as to provide a more uniform flow of the
fluid in the piping system.
Although two forms of
advantageous to illustrate the present inventions the
Those skilled in the art will understand that it can be
different modifications and changes without
so far beyond the scope of the invention.
1. Cardan flexible coupling sleeve for first and second pipes (12, 14), characterized in that it comprises - a cardan system (10) coupled to the first and second
of pipes (12, 14) so as to make the coupling
and flexible means (26) coupled to the first and second conduits (12, 14) so as to connect the latter to each other in a fluid-tight manner, said gimbal system comprising a first spherical portion (18) rigidly coupled to
the first channel (12) and surrounding a part of
said flexible means (26), a second spherical portion (22) rigidly coupled to the second channel (14) and surrounding another portion of said flexible means (26), and
a ring (24) coupled, with the possibility of rotation, to
said first and second spherical portions (18, 22) and having an inner surface having substantially the
shape of a spherical part of a slightly larger diameter
with the diameters of the outer surfaces of the said
first and second spherical portions (18, 22), said
inner face surrounding at least a portion of said
outer faces of these first and second spherical portions
2. Flexible coupling sleeve to the cardan according to the
claim 1, characterized in that said integral surface
ring (24) substantially surrounds all of said outer surfaces of said first and second
spherical parts (18, 22).
3. The flexible gimbal coupling according to claim 1, characterized in that said ring (24) is constituted by a first and a second half-ring (64, 65) in contact with each other,
4. Flexible coupling sleeve to the cardan according to the
claim 1, characterized in that said system at the Car-
dan (10) has four axes forming pivots (28-31) distributed
circumferentially in a uniform manner along said annulus
bucket (24), each pivot pin being rigidly coupled to said ring, while two pivot axes are
coupled so as to be able to pivot to the said first part
spherical section (12) and that two other axes forming pivots are coupled, so as to be able to pivot, to said second
spherical portion (14).
The flexible gimbal coupling according to claim 1, characterized in that
said first spherical portion (18) comprises an end
essentially sinusoidal free form with two recesses and two flanges,
said second spherical portion (22) has an end
essentially sinusoidal free-form tee with two recesses and two flanges,
the two flanges located on said first spherical portion
that (18) being housed in the two recesses in said second spherical portion (22), and
the two flanges on said second spherical portion
that (22) being housed in the two recesses
in said first spherical portion (18).
6. Flexible coupling sleeve to the cardan according to the
claim 1, characterized in that said flexible means
(26) consist of an essentially cylindrical bellows
7. Cardan flexible coupling sleeve according to
(102) comprise: - an annular elastic metal sealing ring (117) 'having a curved outer surface, and - an annular sealing surface (118) contacting with
sliding said curved outer surface.
8. Cardan flexible coupling sleeve according to
claim 7, characterized in that said surface of
(118) consists of a carbon-based material
The flexible gimbal sleeve according to claim 1, characterized in that said diameter
the inner surface is greater, of a value
is between approximately 2.54.10-5 m and 12.7.10-5 m, with diameters
outer surfaces of the first and second spherical portions
(18, 22).
10. Flexible coupling sleeve with universal joint for first and second pipes (12, 14), characterized in that it comprises:
a first tube (16) rigidly coupled to the first section
nalisation (12),
a first spherical portion (18) rigidly connected to the
said first tube (16) and having an aligned opening
with said first tube and having first and second
flange (40, 41) diametrically opposed and
each having a hole (42, 43),
a second tube (20) rigidly coupled to the second cannula
(14), a second spherical portion (22) rigidly connected to said
second tube (20) and having a central opening
with said second tube and having third and
fourth flanges diametrically opposed (54, 55) and
each carrying a bore (56, 57),
flexible means (26) coupled to said first and second
cond tubes (16, 20) so as to connect the latter to each other in a fluid-tight manner, - a ring (24) comprising first, second, third
and fourth openings (72-75, 80-83) distributed circumferentially
in a uniform way, and surrounding the said
(40, 41, 54, 55) on each of said first and second
conde spherical parts (18, 22),
a first pivot axis (28) housed in said first
re opening (72, 80) formed in said ring and housed
with possibility of pivoting in said piercing (56)
swung into said first flange (54), - a second pivot axis (29) housed in said second opening (74, 82) in said ring and pivotably housed in said bore (43) in said second flange ( 41)
a third pivot axis (30) housed in said first
first opening (73, 81) formed in said ring and housed
with possibility of pivoting in said bore (42)
in said third flange (40), and
a fourth pivot shaft (31) housed in said quadrant
third opening (75, 83) formed in said ring and housed
with possibility of pivoting in said drilling (57)
in said fourth flange (55),
said ring (24) having an inner surface having
essentially in the shape of a spherical part, the
diameter of said inner surface being slightly
outside the diameters of the outer surfaces of the said
first and second spherical portions (18, 22).
11. Flexible coupling sleeve to the cardan according to the
claim 10, characterized in that said ring (24)
turns said flexible means (26).
12. Flexible coupling sleeve according to the cardan
turns said first and second spherical portions (18, 22).
13. Flexible coupling sleeve with universal joint according to
claim 10, characterized in that said ring (24) comprises
door of the first and second half-rings (64, 65) in reciprocal contact.
The flexible gimbal coupling according to claim 10, characterized in that said first and
second spherical portions (18, 22) comprise
free tees (37, 51) of essentially sinusoidal shape
coupling reciprocally.
The flexible gimbal coupling according to claim 10, characterized in that said first and second spherical portions (18, 22) have outer surfaces having substantially the same diameters and
the same axes.
FR8601499A 1985-02-06 1986-02-04 Sleeve fitting has gimbal systems for pipelines Expired FR2577005B1 (en)
US06/698,693 US4643463A (en) 1985-02-06 1985-02-06 Gimbal joint for piping systems
FR2577005A1 true FR2577005A1 (en) 1986-08-08
FR2577005B1 FR2577005B1 (en) 1989-06-23
ID=24806296
FR8601499A Expired FR2577005B1 (en) 1985-02-06 1986-02-04 Sleeve fitting has gimbal systems for pipelines
US (1) US4643463A (en)
FR (1) FR2577005B1 (en)
GB (1) GB2170567B (en)
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