WO2007042417A1 - Female element with anti-screwing system for quick-coupling for pipe fitting - Google Patents

Female element with anti-screwing system for quick-coupling for pipe fitting Download PDF

Info

Publication number
WO2007042417A1
WO2007042417A1 PCT/EP2006/066948 EP2006066948W WO2007042417A1 WO 2007042417 A1 WO2007042417 A1 WO 2007042417A1 EP 2006066948 W EP2006066948 W EP 2006066948W WO 2007042417 A1 WO2007042417 A1 WO 2007042417A1
Authority
WO
WIPO (PCT)
Prior art keywords
male
female
external body
ring nut
female element
Prior art date
Application number
PCT/EP2006/066948
Other languages
French (fr)
Inventor
Matteo Allevi
Gianmarco Gatti
Giovanni Stucchi
Sergio Tivelli
Original Assignee
Stucchi S.P.A.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Stucchi S.P.A. filed Critical Stucchi S.P.A.
Publication of WO2007042417A1 publication Critical patent/WO2007042417A1/en

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L19/00—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts
    • F16L19/02—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L27/00—Adjustable joints, Joints allowing movement
    • F16L27/08—Adjustable joints, Joints allowing movement allowing adjustment or movement only about the axis of one pipe
    • F16L27/0804—Adjustable joints, Joints allowing movement allowing adjustment or movement only about the axis of one pipe the fluid passing axially from one joint element to another
    • F16L27/0808—Adjustable joints, Joints allowing movement allowing adjustment or movement only about the axis of one pipe the fluid passing axially from one joint element to another the joint elements extending coaxially for some distance from their point of separation
    • F16L27/0824—Adjustable joints, Joints allowing movement allowing adjustment or movement only about the axis of one pipe the fluid passing axially from one joint element to another the joint elements extending coaxially for some distance from their point of separation with ball or roller bearings
    • F16L27/0832—Adjustable joints, Joints allowing movement allowing adjustment or movement only about the axis of one pipe the fluid passing axially from one joint element to another the joint elements extending coaxially for some distance from their point of separation with ball or roller bearings having axial bearings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L37/00—Couplings of the quick-acting type
    • F16L37/28—Couplings of the quick-acting type with fluid cut-off means
    • F16L37/30—Couplings of the quick-acting type with fluid cut-off means with fluid cut-off means in each of two pipe-end fittings
    • F16L37/32—Couplings of the quick-acting type with fluid cut-off means with fluid cut-off means in each of two pipe-end fittings at least one of two lift valves being opened automatically when the coupling is applied
    • F16L37/34—Couplings of the quick-acting type with fluid cut-off means with fluid cut-off means in each of two pipe-end fittings at least one of two lift valves being opened automatically when the coupling is applied at least one of the lift valves being of the sleeve type, i.e. a sleeve is telescoped over an inner cylindrical wall
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L37/00—Couplings of the quick-acting type
    • F16L37/50—Couplings of the quick-acting type adjustable; allowing movement of the parts joined
    • F16L37/53—Couplings of the quick-acting type adjustable; allowing movement of the parts joined allowing adjustment or movement only about the axis of one pipe

Definitions

  • the present invention relates to a female element with anti-screwing system for quick-coupling for pipe fitting.
  • fittings which may be rapidly coupled together to connect rigid or flexible pipes, in turn connected to a fluid feed or user, must frequently be used.
  • the known quick-coupling fittings usually consist of two elements, named male and female, which are fastened to respective pipes to be joined and which can be coupled together by screwing or by snapping. In the present case, reference is made to screw-on fittings.
  • the female element comprises a hollow external body having an end provided with fastening means to one of the pipes to be joined and another end intended for the frontal coupling with a corresponding end of the male element.
  • a lock ring nut is rotationally and slidingly mounted which is fastened onto a complementary part of the external body of the male element to ensure the stabile union of the two male and female elements of the fitting.
  • This ring nut locks together the male and female elements, thus contrasting the hydraulic force of the fluid which flows within and that generated by elastic elements provided within the two elements, which tend to move the male element away from the female element.
  • the flexible pipes when the coupling is working on earth-moving machines or other machinery, the flexible pipes may be subjected to turning or twisting, which tend to make the two male and female elements of the fitting reciprocally rotate.
  • the currently known technique does not allow the rotation of the two elements of the fitting, because this would cause the loosening of the male element from the female element with consequent possible opening of the fitting, or would cause serious damage to the fitting itself due to the friction of the internal parts.
  • there are no degrees of freedom between the two flexible pipes connected to the fitting this is prevented by the sliding friction between the lock ring nut and the external body of the female element, accentuated by the hydraulic pressure existing within the fitting.
  • a female element comprising an external hollow body having an end provided with fastening means to one of the pipes to be joined and the other end intended to frontally couple with a corresponding end of a male element and a fastening ring nut turnably and slidingly mounted around said other end and screwable on a complementary part of said external male body to ensure the stable union of the male and female elements of the fitting, characterised in that it comprises low-friction coefficient interposition means inserted between said lock ring nut and said external body of the female element to generate between the same a friction capable of allowing their reciprocal rotation without loosening the lock ring nut from the external body of the male element in the event of reciprocal turning or twisting of the two pipes connected to the two male and female elements.
  • the aforesaid interposition means consist of a ball bearing.
  • the sliding friction thus produced by turning and twisting of the two pipes between the lock ring nut and the external body of the female element is converted by the bearing into rolling friction which allows such turning and twisting without loosening or damaging the coupling.
  • the following advantages are obtained: the possibility of relieving turning and twisting of the pipes thus prolonging the life of the same; - avoiding the loosening of the male element and the female element; preserving the duration of the coupling; obtaining a saving of running costs of the fitting, thus avoiding the use of intermediate components between the fitting and the pipes.
  • Figure 1 shows a female fitting element according to the present invention, partially in lateral view and partially in longitudinal section;
  • Figure 2 shows, partially in side view and partially in longitudinal section, a male element couplable with said female element
  • Figure 3 shows the two male and female elements reciprocally coupled and locked
  • Figure 4 shows the magnified detail of the ball bearing of the female element in the condition with the elements coupled and locked in Figure 3;
  • Figure 5 shows the magnified detail of a pair of low-friction coefficient pads usable in place of said ball bearing.
  • Figure 1 shows a female pipe fitting element, which is shown as a whole with number 1 and comprises a hollow external body 2 made of two parts 3 and 4, the first of which ends with a threaded nut 5 suitable for fastening the female element 1 to one of the pipes to be joined.
  • Part 3 of internal body 2 coaxially supports a rigid central stem 7 having a widened end 8 with a seal 9 near said other end 2 of external body 2.
  • a sealing bushing 10 is arranged coaxially in axially sliding manner about stem 7 and is stressed by a spring 11 to engage with seal 9 of the widened end of the stem itself to prevent the passage of fluid to or from within female element 1.
  • An elastically stressed cleaning bushing 12 under the bias of a spring 13 is coaxially arranged about sealing bushing 10 to prevent the entrance of dirt about the sealing bushing.
  • a ball bearing 16 better shown in Figure 4, which has an annular sequence of balls 17 arranged between two slewing rings 18 and 19, the first of which is constantly engaged by sliding friction with shoulder 14.
  • Figure 2 in turn shows a male element 31, which has an external hollow body 32 formed by two parts 33 and 34 screwed one onto the other.
  • external body 32 is shaped as an internally threaded nut 35 suitable for fastening male element 31 to the other pipe to be connected, while the other end 36 of the same external body is cylindrical and suitable to be inserted within external body 2 of male element 1 and cause the retraction of cleaning bushing 12 and, by means of the same, of sealing bushing 10 when the two male and female elements of the fitting are joined.
  • a cup head 37 abutting against a widened end 8 of central stem 7 of female element.
  • Said head 37 is associated to a piston 38 with axial stem 39 and is stressed in the position shown in Figure 3 by a spring 40 reacting against a rear cup-shaped element 41 fixed by means of radial pattern 42 to part 33 of external body 32.
  • stem 39 is slidingly arranged stem 43 of a poppet valve 44, which under the bias of spring 45 is pushed to a closed position of the passage of fluid within male element 31, as shown in Figure 3.
  • part 33 of external body 32 presents an external threading 46 on which lock ring nut 6 of female element 1 is fastened for reciprocally locking of the male and female elements in the engaged position in Figure 3.
  • cylindrical end 36 of male element 31 pushes back bushings 12 and 10 of female element 1, thus opening the flow of fluid through the female element, while widened end 8 of stem 7 of the female element pushes head 37, and consequently piston 38 and valve 44 of the male element, thus opening the flow of fluid through the male element.
  • lock ring nut 6 is fastened onto threaded part 46 of the external body of the male element, thus securely locking the two male and female elements in coupled position.
  • the hydraulic force of the fluid flowing in the fitting contributes to maintaining stable the coupling between the two male and female elements thanks to the friction which is generated on the thread of ring 6 of the female element and of threaded part 33 of the male element.
  • the solution shown in Fig. 5 may be used employing two low- friction coefficient pads 50 and 51 in place of slewing rings 18 and 19. Between the two pads there is a sliding friction condition, and not a rolling friction condition, though with a very low value.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Quick-Acting Or Multi-Walled Pipe Joints (AREA)

Abstract

It is described a female element (1) comprising a hollow external body (2) having an end (3) provided with fastening means (5) of one of the pipes to be joined and another end (4) intended for the frontal coupling with a corresponding end (36) of a male element (31). On said other end (4) of the external body (2) is rotationally and slidingly mounted a lock ring nut (6) which is screwable onto a complementary part (33) of the external body (32) of the male element to ensure the stabile union of the two male and female fitting elements. A ball bearing (16) is interposed between said lock ring nut (6) and said external body (2) of the female element (1) to generate between the same a rolling friction capable of allowing the reciprocal rotation without loosening the lock ring nut (6) from the external body (32) of the male element (31) in the case of turning or reciprocal twisting of the two pipes connected to the two male and female elements. Alternatively to the ball bearing, a pair of low-friction coefficient pads (50 and 51) may be provided.

Description

"Female element with anti-screwing system for quick-coupling for pipe fitting".
DESCRIPTION The present invention relates to a female element with anti-screwing system for quick-coupling for pipe fitting.
For the transmission of fluids, fittings which may be rapidly coupled together to connect rigid or flexible pipes, in turn connected to a fluid feed or user, must frequently be used. The known quick-coupling fittings usually consist of two elements, named male and female, which are fastened to respective pipes to be joined and which can be coupled together by screwing or by snapping. In the present case, reference is made to screw-on fittings.
According to a currently known technique, the female element comprises a hollow external body having an end provided with fastening means to one of the pipes to be joined and another end intended for the frontal coupling with a corresponding end of the male element. On said other end a lock ring nut is rotationally and slidingly mounted which is fastened onto a complementary part of the external body of the male element to ensure the stabile union of the two male and female elements of the fitting. This ring nut locks together the male and female elements, thus contrasting the hydraulic force of the fluid which flows within and that generated by elastic elements provided within the two elements, which tend to move the male element away from the female element. An example of such screw coupling is described and illustrated in EP-
A-O 580 233.
If the connected pipes are flexible pipes, when the coupling is working on earth-moving machines or other machinery, the flexible pipes may be subjected to turning or twisting, which tend to make the two male and female elements of the fitting reciprocally rotate. The currently known technique does not allow the rotation of the two elements of the fitting, because this would cause the loosening of the male element from the female element with consequent possible opening of the fitting, or would cause serious damage to the fitting itself due to the friction of the internal parts. In essence, there are no degrees of freedom between the two flexible pipes connected to the fitting: this is prevented by the sliding friction between the lock ring nut and the external body of the female element, accentuated by the hydraulic pressure existing within the fitting.
Considering the state of the art, it is the object of the present invention to obtain a female element for quick-coupling pipe fittings which allows the reciprocal turning or twisting of the flexible pipes connected to the two male and female elements of the fitting without this turning or twisting causing loosening of or damage to the two elements themselves.
According to the invention, this object is reached by a female element comprising an external hollow body having an end provided with fastening means to one of the pipes to be joined and the other end intended to frontally couple with a corresponding end of a male element and a fastening ring nut turnably and slidingly mounted around said other end and screwable on a complementary part of said external male body to ensure the stable union of the male and female elements of the fitting, characterised in that it comprises low-friction coefficient interposition means inserted between said lock ring nut and said external body of the female element to generate between the same a friction capable of allowing their reciprocal rotation without loosening the lock ring nut from the external body of the male element in the event of reciprocal turning or twisting of the two pipes connected to the two male and female elements.
Preferably, the aforesaid interposition means consist of a ball bearing. In this way, the sliding friction thus produced by turning and twisting of the two pipes between the lock ring nut and the external body of the female element is converted by the bearing into rolling friction which allows such turning and twisting without loosening or damaging the coupling.
Essentially, the following advantages are obtained: the possibility of relieving turning and twisting of the pipes thus prolonging the life of the same; - avoiding the loosening of the male element and the female element; preserving the duration of the coupling; obtaining a saving of running costs of the fitting, thus avoiding the use of intermediate components between the fitting and the pipes.
The features of the present invention will be more apparent from the following detailed description in an non- limitative example of a female element shown in the accompanying drawings, in which:
Figure 1 shows a female fitting element according to the present invention, partially in lateral view and partially in longitudinal section;
Figure 2 shows, partially in side view and partially in longitudinal section, a male element couplable with said female element;
Figure 3 shows the two male and female elements reciprocally coupled and locked;
Figure 4 shows the magnified detail of the ball bearing of the female element in the condition with the elements coupled and locked in Figure 3; Figure 5 shows the magnified detail of a pair of low-friction coefficient pads usable in place of said ball bearing.
Figure 1 shows a female pipe fitting element, which is shown as a whole with number 1 and comprises a hollow external body 2 made of two parts 3 and 4, the first of which ends with a threaded nut 5 suitable for fastening the female element 1 to one of the pipes to be joined.
On part 3 of external body 2 is fastened one end of part 4 of the same external body, on the other end 2 of which an internally threaded lock ring nut 6 provided with a rear shoulder 20 is turnably and slidingly mounted.
Part 3 of internal body 2 coaxially supports a rigid central stem 7 having a widened end 8 with a seal 9 near said other end 2 of external body 2.
A sealing bushing 10 is arranged coaxially in axially sliding manner about stem 7 and is stressed by a spring 11 to engage with seal 9 of the widened end of the stem itself to prevent the passage of fluid to or from within female element 1.
An elastically stressed cleaning bushing 12 under the bias of a spring 13 is coaxially arranged about sealing bushing 10 to prevent the entrance of dirt about the sealing bushing.
Between an end shoulder 14 of said other end of part 4 of external body 2 and a steel snap ring 15 arranged in retracted position around the same part 4 of external body 2 is arranged a ball bearing 16, better shown in Figure 4, which has an annular sequence of balls 17 arranged between two slewing rings 18 and 19, the first of which is constantly engaged by sliding friction with shoulder 14. Figure 2 in turn shows a male element 31, which has an external hollow body 32 formed by two parts 33 and 34 screwed one onto the other.
One end of external body 32 is shaped as an internally threaded nut 35 suitable for fastening male element 31 to the other pipe to be connected, while the other end 36 of the same external body is cylindrical and suitable to be inserted within external body 2 of male element 1 and cause the retraction of cleaning bushing 12 and, by means of the same, of sealing bushing 10 when the two male and female elements of the fitting are joined.
Within end 36 of external body 32 is slidingly housed a cup head 37 abutting against a widened end 8 of central stem 7 of female element. Said head 37 is associated to a piston 38 with axial stem 39 and is stressed in the position shown in Figure 3 by a spring 40 reacting against a rear cup-shaped element 41 fixed by means of radial pattern 42 to part 33 of external body 32. About stem 39 is slidingly arranged stem 43 of a poppet valve 44, which under the bias of spring 45 is pushed to a closed position of the passage of fluid within male element 31, as shown in Figure 3. Finally, part 33 of external body 32 presents an external threading 46 on which lock ring nut 6 of female element 1 is fastened for reciprocally locking of the male and female elements in the engaged position in Figure 3.
In essence, upon coupling, cylindrical end 36 of male element 31 pushes back bushings 12 and 10 of female element 1, thus opening the flow of fluid through the female element, while widened end 8 of stem 7 of the female element pushes head 37, and consequently piston 38 and valve 44 of the male element, thus opening the flow of fluid through the male element.
With the male and female elements in coupled position in Figure 3, lock ring nut 6 is fastened onto threaded part 46 of the external body of the male element, thus securely locking the two male and female elements in coupled position.
In such position, the hydraulic force of the fluid flowing in the fitting contributes to maintaining stable the coupling between the two male and female elements thanks to the friction which is generated on the thread of ring 6 of the female element and of threaded part 33 of the male element.
In case of twisting or turning of the two pipes attached to the male and female elements, a sliding friction situation occurs between slewing ring 18 of bearing 16 and shoulder 1 of the external body of the female element and a similar sliding friction situation occurs between slewing ring 19 and the rear shoulder 20 of ring nut 6, in turn engaged by friction with the external threading of the male element.
Between the two slewing rings 18 and 19, thanks to balls 17 there is instead a condition of rolling friction which allows external body 2 of the female element to turn with respect to ring nut 6 and therefore to external body 32 of the male element. Consequently, the two pipes fixed to the two male and female elements of the fitting may reciprocally turn or be subjected to twisting without loosening the coupling and/or damaging its parts.
Alternatively to the ball bearing in Fig. 4, the solution shown in Fig. 5 may be used employing two low- friction coefficient pads 50 and 51 in place of slewing rings 18 and 19. Between the two pads there is a sliding friction condition, and not a rolling friction condition, though with a very low value.

Claims

1. A female element (1) comprising an external hollow body (2) having an end (3) provided with fastening means (5) to one of the pipes to be joined and the other end (4) intended to frontally couple with a corresponding end (36) of a male element (31) and a fastening ring nut (6) turnably and slidingly mounted around said other end (4) and screwable on a complementary part (33) of said external body (32) of the male element to ensure the stable union of the two male and female fitting elements, characterised in that it comprises low-friction coefficient interposition means (16; 50, 51) inserted between said lock ring nut (6) and said external body
(2) of the female element (1) to generate between the same a low value friction capable of allowing their reciprocal rotation without loosening the lock ring nut (6) from the external body (32) of the male element (31) in the event of reciprocal turning or twisting of the two pipes connected to the two male and female elements.
2. A female element according to claim 1, characterised in that said interposition means consist of a ball bearing (16).
3. A female element according to claim 2, characterised in that said ball bearing (16) comprises a first slewing ring (18) constantly engaged by sliding friction with a terminal end shoulder (14) of said external body (2), a second slewing ring (19) with male and female elements coupled and locked together and engaged by sliding friction with a rear shoulder (20) of said lock ring nut (6) and an annular sequence of balls (17) interposed between the two slewing rings (18, 19).
4. A female element according to claim 1, characterised in that said interposition means consist of a pair of low-friction coefficient pads (50, 51).
PCT/EP2006/066948 2005-10-07 2006-10-02 Female element with anti-screwing system for quick-coupling for pipe fitting WO2007042417A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITMI2005A001893 2005-10-07
ITMI20051893 ITMI20051893A1 (en) 2005-10-07 2005-10-07 FEMALE ELEMENT WITH ANTI-UNCHANGED SYSTEMS FOR RAPID CONNECTION CONNECTION FOR PIPES

Publications (1)

Publication Number Publication Date
WO2007042417A1 true WO2007042417A1 (en) 2007-04-19

Family

ID=37478865

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2006/066948 WO2007042417A1 (en) 2005-10-07 2006-10-02 Female element with anti-screwing system for quick-coupling for pipe fitting

Country Status (2)

Country Link
IT (1) ITMI20051893A1 (en)
WO (1) WO2007042417A1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011129782A1 (en) * 2010-04-14 2011-10-20 Tamsan Baglanti Elemanlari Yedek Parca Ve Makina Ekipmanlari Turizm Insaat Sanayi Ve Ticaret Anonim Sirketi Quick connection member resistant to high pressure
JP2012107678A (en) * 2010-11-16 2012-06-07 Koyo Sangyo Ltd Gas cock
US8470809B2 (en) 2005-10-12 2013-06-25 Orchid Chemicals & Pharmaceuticals Limited Crystalline sodium salt of cephalosporin antibiotic
WO2016199035A1 (en) * 2015-06-10 2016-12-15 Stucchi S.P.A. Anti-unscrewing quick coupling fitting

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2218318A (en) * 1939-05-01 1940-10-15 Blackhawk Mfg Co Detachable conduit coupling
US3099466A (en) * 1959-06-19 1963-07-30 Inventex A G Rotary pipe coupling
US3446245A (en) * 1966-02-28 1969-05-27 Srm Co Threaded fluid coupling
US3850454A (en) * 1972-03-15 1974-11-26 British Ropes Ltd Pipe couplings
EP0567924A1 (en) * 1992-04-27 1993-11-03 Tadahiro Ohmi Pipe joint

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2218318A (en) * 1939-05-01 1940-10-15 Blackhawk Mfg Co Detachable conduit coupling
US3099466A (en) * 1959-06-19 1963-07-30 Inventex A G Rotary pipe coupling
US3446245A (en) * 1966-02-28 1969-05-27 Srm Co Threaded fluid coupling
US3850454A (en) * 1972-03-15 1974-11-26 British Ropes Ltd Pipe couplings
EP0567924A1 (en) * 1992-04-27 1993-11-03 Tadahiro Ohmi Pipe joint

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8470809B2 (en) 2005-10-12 2013-06-25 Orchid Chemicals & Pharmaceuticals Limited Crystalline sodium salt of cephalosporin antibiotic
WO2011129782A1 (en) * 2010-04-14 2011-10-20 Tamsan Baglanti Elemanlari Yedek Parca Ve Makina Ekipmanlari Turizm Insaat Sanayi Ve Ticaret Anonim Sirketi Quick connection member resistant to high pressure
JP2012107678A (en) * 2010-11-16 2012-06-07 Koyo Sangyo Ltd Gas cock
WO2016199035A1 (en) * 2015-06-10 2016-12-15 Stucchi S.P.A. Anti-unscrewing quick coupling fitting
EA033651B1 (en) * 2015-06-10 2019-11-13 Stucchi Spa Anti-unscrewing quick coupling fitting
AU2016276292B2 (en) * 2015-06-10 2020-03-12 Stucchi S.P.A. Anti-unscrewing quick coupling fitting
US10865916B2 (en) 2015-06-10 2020-12-15 Stucchi S.P.A. Anti-unscrewing quick coupling fitting

Also Published As

Publication number Publication date
ITMI20051893A1 (en) 2007-04-08

Similar Documents

Publication Publication Date Title
US6450545B1 (en) Fluid coupling plug
EP1745237B1 (en) A coupling for the transfer of fluids under pressure
US4902043A (en) Fluid coupling and seal assembly
US4485845A (en) Quick disconnect coupling
AU2016276292B2 (en) Anti-unscrewing quick coupling fitting
CN100353115C (en) Quick conecctor with one-way check valve
US3032359A (en) Quick connect coupling
WO2007042417A1 (en) Female element with anti-screwing system for quick-coupling for pipe fitting
US2503281A (en) Swivel joint
CA2616581C (en) Female quick coupling fitting element for pipes
US4621840A (en) Self-locking, selectively releasable mechanism for locking structural parts together with load relieving retention
US2144117A (en) Union assembly
US5904376A (en) Coupling assembly for a fluid purification system
US6715801B2 (en) Safety quick connection
US3473782A (en) Coupling device
US9746020B1 (en) Jam nut lock for rod ends and the like
US3504935A (en) Swivel coupling for fluid conduit
KR102566047B1 (en) Looseness preventing structure for swivel joint
JP6716924B2 (en) Pipe fitting
KR200250605Y1 (en) A magnetic check valve
US20060175831A1 (en) Fluid quick connect contamination cover
US1245614A (en) Hose-coupling.
TWI603025B (en) Quick connector water stop structure
RU54133U1 (en) COUPLING
KR200261382Y1 (en) Plug Coupler Combined with Stop Valve for Fluid Transfer

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application
NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 06793940

Country of ref document: EP

Kind code of ref document: A1