CA2177315C - Quick coupling for fluids under pressure - Google Patents
Quick coupling for fluids under pressure Download PDFInfo
- Publication number
- CA2177315C CA2177315C CA002177315A CA2177315A CA2177315C CA 2177315 C CA2177315 C CA 2177315C CA 002177315 A CA002177315 A CA 002177315A CA 2177315 A CA2177315 A CA 2177315A CA 2177315 C CA2177315 C CA 2177315C
- Authority
- CA
- Canada
- Prior art keywords
- quick coupling
- stem
- fluid
- bodies
- under pressure
- Prior art date
- Legal status (The legal status 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 status listed.)
- Expired - Lifetime
Links
- 230000008878 coupling Effects 0.000 title claims abstract description 51
- 238000010168 coupling process Methods 0.000 title claims abstract description 51
- 238000005859 coupling reaction Methods 0.000 title claims abstract description 51
- 239000012530 fluid Substances 0.000 title claims abstract description 41
- 230000013011 mating Effects 0.000 claims abstract description 6
- 230000009471 action Effects 0.000 claims abstract description 4
- 229920002994 synthetic fiber Polymers 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000005245 sintering Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000002226 simultaneous effect Effects 0.000 description 1
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
- 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
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Quick-Acting Or Multi-Walled Pipe Joints (AREA)
Abstract
The quick coupling has a union for the connection of a pipe, for the supply of a fluid, and an opening which can be shut off for the introduction of a union for delivery of the fluid to a user. Situated inside the quick coupling is a fixed stem, forming a valve head and interacting with a valve seat formed by tubular means which can be moved against the action of spring means. The end of the stem which faces the inlet of the fluid under pressure has a circumferential groove which receives with geometrical mating a support disc consisting of two half-bodies which can be assembled and which have a central seat which surrounds the stem in the region of the circumferential groove. Each half-body has at least one opening for the passage of the fluid supplied. The assembled support disc is inserted and locked locally in a seat made in the body of the quick coupling.
Description
De~cription of the invention The present invention relates to a quick coupling for the di~tribution of fluids under presRure, consisting of a union for the connection of a pipe, for the supply of the fluid, and of an opening which can be shut off for the introduction of a union for delivery of the fluid to a user, there being provided inside the quick coupling a fixed stem with a valve head forming a valve seat together with tubular means which can be moved against the action of spring means.
Quick couplings for fluids under pressure are known, in particular quick couplings of the type with a plane face which allow the end of the stem which faces the inlet of the fluid under pressure and is equipped with an external thread to be screwed into an axial through-hole which is made in the body of the coupling.
The threaded end of the stem, which projects from the axial hole of the support body, has to be provided with a notch which serves lock the stem during locking of a counternut screwed onto the free end of the stem.
This counternut is necessary in order to prevent undesirable unscrewing of the stem -in relation to the body of the coupling.
The body of the coupling, which is made in a single piece, has a plurality of through-holes to define passages for the fluid under pressure.
Rnown rapid couplings have the disadvantages that their monolithic body is difficult to produce as far as its mach;n;ng is concerned, given that the body has to be equipped with a threaded axial hole and also with a plurality of through-holes arranged in a wall and around the axial hole.
The presence of individual through-holes brings about an undesirable throttling of the passage for the fluid under pressure. A further disadvantage of known quick couplings is that the assembly of the coupling by means of screwing and unscrewing the stem in relation to the monobloc body is complicated and wastes a considerable amount of time.
2177~15 Further~ore, the risk of undesirable unscrewing of the stem in relation to the monobloc, in ca~es where the counternut is not screwed firmly onto the stem, can lead to disruptionR in the functioning of the quick coupling to the extent that there i5 a risk of breakage, causing damage as a result of the e~cape of oil under pressure.
The aim of the present invention is to produce a new quick coupling which does not have the disadvantages of the prior art and which is easy to manufacture and to assemble rapidly.
This aim is achieved with a quick coupling for fluids under pressure having a union for the connection of a pipe, for supply of the fluid, and an opening which can be shut off for the introduction of a tubular union - for delivery of the fluid to a user, there being~provided inside the quick coupling a fixed stem having a valve head which interacts with the valve seat formed by tubular means which can be moved against the action of spring means, characterized in that the end of the stem which faces the inlet of the fluid under pressure haQ a circumferential groove which receives with geometrical mating a support disc consisting of two half-bodies which can be asRembled and which have a central seat which surrounds the stem in the region of the circumferential groove, in that each half-body has at least one passage opening for the fluid under pressure supplied, and in that the ass~bled support disc is inserted and loc~ed locally in a seat made in the body of the quick coupling.
The quick coupling for fluids under pressure produced according to the invention has the advantages that the stem is no longer ass~mhled with the body of the quick coupling by means of a thread, as known from the state of the art, but the stem is held fixed in position by a geometrical mating between a support disc and the stem and the body of the coupling. This geometrical mating allows easy and rapid assembly of the new quick coupling.
Therefore, the quick coupling, by virtue of its 2177~1~
new and simple structure which is proposed according to the invention, can be produced with a considerable time saving as far as both its manufacture and its assembly are concerned.
In a preferred embodiment, each half-body has a through-opening which is advantageously arc-shaped.
For example, the ~upport disc has only two arc-shaped holes which allow a considerable reduction in the flow re~istance and therefore optimization of the passage of the fluid under pressure without the formation of undesirable vortices.
The opening made in the half-body is advantageously in the shape of an arc arranged along a semi-circle.
The end of the stem which faces the inlet of the fluid is preferably in the shape of a hemisphere.
Such an aerodynamic shape of the end of the stem allows an unimpeded and linear flow of the fluid under pressure through the passage duct towards the inlet of the fluid under pressure.
As an alternative, the end of the stem which faces the inlet of the fluid can also have a parabolic shape.
The half-bodies are advantageously made by means of a sintering process.
This allows rapid mass-production of the support discs at reduced costs.
As an alternative, the half-bodies can also consist of bodies which are die-cast and/or composed of synthetic material.
The object designed according to the present invention will now be described in greater detail by means of an embodiment given only by way of example and illustrated in the attached drawings, in which:
Figure 1 shows the assembled quick coupling, Figure 2 shows the quick coupling according to Figure 1 a~sembled and illustrated in section, Figures 3 to 5 show in a lateral view the stages of assembly of the quick coupling, _ - 5 Figures 6 to 8 ~how in a front view the ~tages of a~embly of the quick coupling.
As i~ illustrated in Figures 1 and 2, the quick coupling, indicated a~ a whole by 1, has an inlet union 2, in this case in the form of a hexagonal nut, and a ring 4 which is rotatable in relation to the union 2.
A tubular element 3 is provided, screwed onto the union 2, as is known from the prior art.
The inlet union 2 is connected to a pipe 6 which 0 i8 illustrated in Figure 2 in dot/dash lines.
The pipe serves to supply a fluid under pressure which passes from the pipe 6 towards a passage duct 7 of the quick coupling 1.
The quick coupling 1, which is formed in a symmetrical m~ner in relation to the working axis 5, has an opening bush 8 and a support body 9 on the inside.
These elements can be moved against the force of a ~pring means 26, in this case a helical spring.
The bush 8 and the body 9 receive on the inside a fixed stem 10 which serves as a means of shutting off the flow. The bush 8 has a valve seat and interacts with the valve head of the stem 10. The bush 8 is capable of opening and closing the passage duct 7 for the fluid in the region of the outlet of the quick coupling 1.
According to the invention, a support disc 11 is arranged between the stem 10 and the body 9 by means of geometrical mating. The disc 11 consists of two half-bodies 12 shaped like small plates. ~ach half-body 12 has a passage opening 25 (see Figure 6). The assembled support disc 11 defines a central seat, with which the disc 11 can be accommodated in a circumferential groove 13 provided at the end of the stem 10. At the same time, the disc 11 is accommodated and restrained locally in a seat 30 which is made in the body 9 of the quick coupling 1. The two half-bodies 12 serve as a means of support for the stem 10 and are, with the seat 31, accommodated in the circumferential groove 13 of the stem 10.
The body 9 is held ~against the thrust force of the spring 26) in a rest position (see Figure 2 and 3) by - ~)17~315~
means of the interaction of the bearing surfaces 14, 15, 16, 17 of the support disc 11 in relation to counter~urface~ 18, 19, 20, 21 of the ~tem 10, of the body 9 and of the inlet union 2.
Figure~ 1 and 2 illustrate that the union 2 is screwed onto the body 9.
The stem 10 has, at its end 22 which faces the inlet of the fluid, a hemispherical or parabolic shape, forming a gradual guide surface for the fluid under pressure. The circumferential groove 13 of the stem 10 is located close to the end 22 of the stem 10. The quick coupling 1 receives an auxiliary bush 23 which defines a plane face and which can be moved towards the inside of the quick coupling 1, that is to say against the thrust force of the spring means 24 interposed between the auxiliary bush 23 and the inlet union 2.
It can be seen from Figures 3, 4 and 6, 7 that the half-bodies 12 are inserted into the y-oove 13 of the stem 10. The body 9 is moved against the thrust force of the spring 26 by an auxiliary means (not shown).
Figures 5 and 8 show the assembled half-bodies 12 holding the body 9 in a rest position against the thrust force of the spring 26. The half-bodies 12 are provided with an arc-shaped opening 25 which coincides with the section of the passage duct 7 for the fluid under pressure.
Therefore, the quick coupling 1, designed according to the invention, can be pre-assembled (Figure 5) and sub~eguently assembled fully (Figure 2).
When the quick coupling 1 is connected to an external pipe 6 provided for supplying the fluid under pressure, the quick coupling 1 i closed in a sealed manner, as illustrated in Figure 2. By means of the introduction of a union for delivery of the fluid to a user (not shown), a thrust force will be transmitted to the auxiliary bush 23, in the direction of the arrows in Figure 1 and 2, thus bringing about a movement of the bush 23 towards the opening bush 8, and against the thrust force of the spring-24. The quick coupling 1 still 2 1 7 7 ~ 1 ~
r~;n~ closed. At the ~ ^nt when the auxiliary bush 23 comes into contact with the opening bush 8, the external thrust force causes a simultaneou~ movement of the bushes 23 and 8 against the thrust forces exerted by the spring~
24 and 26.
With the movement of the opening bush 8, the fluid under pressure begins to pass through the duct 7 and through the outlet to the external user. When the external thrust force iB removed, the bushes 23 and 8 return automatically, as a result of the thrust forces of the springs 24 and 26, into the closing position of the quick coupling 1, as illustrated in Figure 2.
The presence of the support disc 11 with the arc-shaped openings 25 and the special ~hape of the end 22 of the stem 10 optimize~ the passage of the fluid under pressure through the quick coupling 1 from the point of view of fluid dynamics.
According to the in~ention, the end 22 of the stem 10 can also ha~e other aerodynamic shape~, for example a parabolic shape.
The half-bodies 12 are preferably manufactured by a sintering or casting process. Half-bodies made of ~ynthetic material can also be used.
Quick couplings for fluids under pressure are known, in particular quick couplings of the type with a plane face which allow the end of the stem which faces the inlet of the fluid under pressure and is equipped with an external thread to be screwed into an axial through-hole which is made in the body of the coupling.
The threaded end of the stem, which projects from the axial hole of the support body, has to be provided with a notch which serves lock the stem during locking of a counternut screwed onto the free end of the stem.
This counternut is necessary in order to prevent undesirable unscrewing of the stem -in relation to the body of the coupling.
The body of the coupling, which is made in a single piece, has a plurality of through-holes to define passages for the fluid under pressure.
Rnown rapid couplings have the disadvantages that their monolithic body is difficult to produce as far as its mach;n;ng is concerned, given that the body has to be equipped with a threaded axial hole and also with a plurality of through-holes arranged in a wall and around the axial hole.
The presence of individual through-holes brings about an undesirable throttling of the passage for the fluid under pressure. A further disadvantage of known quick couplings is that the assembly of the coupling by means of screwing and unscrewing the stem in relation to the monobloc body is complicated and wastes a considerable amount of time.
2177~15 Further~ore, the risk of undesirable unscrewing of the stem in relation to the monobloc, in ca~es where the counternut is not screwed firmly onto the stem, can lead to disruptionR in the functioning of the quick coupling to the extent that there i5 a risk of breakage, causing damage as a result of the e~cape of oil under pressure.
The aim of the present invention is to produce a new quick coupling which does not have the disadvantages of the prior art and which is easy to manufacture and to assemble rapidly.
This aim is achieved with a quick coupling for fluids under pressure having a union for the connection of a pipe, for supply of the fluid, and an opening which can be shut off for the introduction of a tubular union - for delivery of the fluid to a user, there being~provided inside the quick coupling a fixed stem having a valve head which interacts with the valve seat formed by tubular means which can be moved against the action of spring means, characterized in that the end of the stem which faces the inlet of the fluid under pressure haQ a circumferential groove which receives with geometrical mating a support disc consisting of two half-bodies which can be asRembled and which have a central seat which surrounds the stem in the region of the circumferential groove, in that each half-body has at least one passage opening for the fluid under pressure supplied, and in that the ass~bled support disc is inserted and loc~ed locally in a seat made in the body of the quick coupling.
The quick coupling for fluids under pressure produced according to the invention has the advantages that the stem is no longer ass~mhled with the body of the quick coupling by means of a thread, as known from the state of the art, but the stem is held fixed in position by a geometrical mating between a support disc and the stem and the body of the coupling. This geometrical mating allows easy and rapid assembly of the new quick coupling.
Therefore, the quick coupling, by virtue of its 2177~1~
new and simple structure which is proposed according to the invention, can be produced with a considerable time saving as far as both its manufacture and its assembly are concerned.
In a preferred embodiment, each half-body has a through-opening which is advantageously arc-shaped.
For example, the ~upport disc has only two arc-shaped holes which allow a considerable reduction in the flow re~istance and therefore optimization of the passage of the fluid under pressure without the formation of undesirable vortices.
The opening made in the half-body is advantageously in the shape of an arc arranged along a semi-circle.
The end of the stem which faces the inlet of the fluid is preferably in the shape of a hemisphere.
Such an aerodynamic shape of the end of the stem allows an unimpeded and linear flow of the fluid under pressure through the passage duct towards the inlet of the fluid under pressure.
As an alternative, the end of the stem which faces the inlet of the fluid can also have a parabolic shape.
The half-bodies are advantageously made by means of a sintering process.
This allows rapid mass-production of the support discs at reduced costs.
As an alternative, the half-bodies can also consist of bodies which are die-cast and/or composed of synthetic material.
The object designed according to the present invention will now be described in greater detail by means of an embodiment given only by way of example and illustrated in the attached drawings, in which:
Figure 1 shows the assembled quick coupling, Figure 2 shows the quick coupling according to Figure 1 a~sembled and illustrated in section, Figures 3 to 5 show in a lateral view the stages of assembly of the quick coupling, _ - 5 Figures 6 to 8 ~how in a front view the ~tages of a~embly of the quick coupling.
As i~ illustrated in Figures 1 and 2, the quick coupling, indicated a~ a whole by 1, has an inlet union 2, in this case in the form of a hexagonal nut, and a ring 4 which is rotatable in relation to the union 2.
A tubular element 3 is provided, screwed onto the union 2, as is known from the prior art.
The inlet union 2 is connected to a pipe 6 which 0 i8 illustrated in Figure 2 in dot/dash lines.
The pipe serves to supply a fluid under pressure which passes from the pipe 6 towards a passage duct 7 of the quick coupling 1.
The quick coupling 1, which is formed in a symmetrical m~ner in relation to the working axis 5, has an opening bush 8 and a support body 9 on the inside.
These elements can be moved against the force of a ~pring means 26, in this case a helical spring.
The bush 8 and the body 9 receive on the inside a fixed stem 10 which serves as a means of shutting off the flow. The bush 8 has a valve seat and interacts with the valve head of the stem 10. The bush 8 is capable of opening and closing the passage duct 7 for the fluid in the region of the outlet of the quick coupling 1.
According to the invention, a support disc 11 is arranged between the stem 10 and the body 9 by means of geometrical mating. The disc 11 consists of two half-bodies 12 shaped like small plates. ~ach half-body 12 has a passage opening 25 (see Figure 6). The assembled support disc 11 defines a central seat, with which the disc 11 can be accommodated in a circumferential groove 13 provided at the end of the stem 10. At the same time, the disc 11 is accommodated and restrained locally in a seat 30 which is made in the body 9 of the quick coupling 1. The two half-bodies 12 serve as a means of support for the stem 10 and are, with the seat 31, accommodated in the circumferential groove 13 of the stem 10.
The body 9 is held ~against the thrust force of the spring 26) in a rest position (see Figure 2 and 3) by - ~)17~315~
means of the interaction of the bearing surfaces 14, 15, 16, 17 of the support disc 11 in relation to counter~urface~ 18, 19, 20, 21 of the ~tem 10, of the body 9 and of the inlet union 2.
Figure~ 1 and 2 illustrate that the union 2 is screwed onto the body 9.
The stem 10 has, at its end 22 which faces the inlet of the fluid, a hemispherical or parabolic shape, forming a gradual guide surface for the fluid under pressure. The circumferential groove 13 of the stem 10 is located close to the end 22 of the stem 10. The quick coupling 1 receives an auxiliary bush 23 which defines a plane face and which can be moved towards the inside of the quick coupling 1, that is to say against the thrust force of the spring means 24 interposed between the auxiliary bush 23 and the inlet union 2.
It can be seen from Figures 3, 4 and 6, 7 that the half-bodies 12 are inserted into the y-oove 13 of the stem 10. The body 9 is moved against the thrust force of the spring 26 by an auxiliary means (not shown).
Figures 5 and 8 show the assembled half-bodies 12 holding the body 9 in a rest position against the thrust force of the spring 26. The half-bodies 12 are provided with an arc-shaped opening 25 which coincides with the section of the passage duct 7 for the fluid under pressure.
Therefore, the quick coupling 1, designed according to the invention, can be pre-assembled (Figure 5) and sub~eguently assembled fully (Figure 2).
When the quick coupling 1 is connected to an external pipe 6 provided for supplying the fluid under pressure, the quick coupling 1 i closed in a sealed manner, as illustrated in Figure 2. By means of the introduction of a union for delivery of the fluid to a user (not shown), a thrust force will be transmitted to the auxiliary bush 23, in the direction of the arrows in Figure 1 and 2, thus bringing about a movement of the bush 23 towards the opening bush 8, and against the thrust force of the spring-24. The quick coupling 1 still 2 1 7 7 ~ 1 ~
r~;n~ closed. At the ~ ^nt when the auxiliary bush 23 comes into contact with the opening bush 8, the external thrust force causes a simultaneou~ movement of the bushes 23 and 8 against the thrust forces exerted by the spring~
24 and 26.
With the movement of the opening bush 8, the fluid under pressure begins to pass through the duct 7 and through the outlet to the external user. When the external thrust force iB removed, the bushes 23 and 8 return automatically, as a result of the thrust forces of the springs 24 and 26, into the closing position of the quick coupling 1, as illustrated in Figure 2.
The presence of the support disc 11 with the arc-shaped openings 25 and the special ~hape of the end 22 of the stem 10 optimize~ the passage of the fluid under pressure through the quick coupling 1 from the point of view of fluid dynamics.
According to the in~ention, the end 22 of the stem 10 can also ha~e other aerodynamic shape~, for example a parabolic shape.
The half-bodies 12 are preferably manufactured by a sintering or casting process. Half-bodies made of ~ynthetic material can also be used.
Claims (8)
1. Quick coupling (1) for fluids under pressure, with a union (2) for the connection of a pipe (6) for the supply of the fluid, and an opening which can be shut off which allows the introduction of a union for the supply of the fluid to a user, there being provided inside the quick coupling (1) a fixed stem (10) forming a valve head which interacts with a valve seat made in a tubular means (8) which can be moved against the action of spring means (26), characterized in that the end (22) of the stem (10) which faces the inlet of the fluid under pressure has a circumferential groove (13) which receives with geometrical mating a support disc (11) consisting of two half-bodies (12) which can be assembled and which have a central seat (31) which surrounds the stem (10) in the region of the circumferential groove (13), in that each half-body (12) has at least one passage opening (25) for the fluid supplied, and in that the assembled support disc (11) is inserted and locked locally in a seat (30) made in the body (9) of the quick coupling (1).
2. Quick coupling according to Claim 1, characterized in that each half-body (12) has at least one arc-shaped opening (25) for the passage of the fluid.
3. Quick coupling according to Claim 2, characterized in that the arc-shaped opening (25) extends along a semi-circle.
4. Quick coupling according to Claim 1, characterized in that the end (22) of the stem (10) which faces the inlet of the fluid has a hemispherical shape.
5. Quick coupling according to Claim 1, characterized in that the end (22) of the stem (10) which faces the inlet of the fluid has a parabolic shape.
6. Quick coupling according to Claim 1, characterized in that the half-bodies (12) consist of sintered bodies.
7. Quick coupling according to Claim 1, characterized in that the half-bodies (12) consist of die-cast bodies.
8. Quick coupling according to Claim 1, characterized in that the half-bodies (12) are composed of synthetic material.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ITMI95A-001127 | 1995-05-31 | ||
| ITMI951127A IT1275282B (en) | 1995-05-31 | 1995-05-31 | QUICK COUPLING FOR UNDER PRESSURE FLUIDS |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2177315A1 CA2177315A1 (en) | 1996-12-01 |
| CA2177315C true CA2177315C (en) | 2004-01-06 |
Family
ID=11371711
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002177315A Expired - Lifetime CA2177315C (en) | 1995-05-31 | 1996-05-24 | Quick coupling for fluids under pressure |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP0745802A1 (en) |
| JP (1) | JP3038315B2 (en) |
| CA (1) | CA2177315C (en) |
| IT (1) | IT1275282B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ITMI20130524A1 (en) * | 2013-04-05 | 2014-10-06 | Alfa Gomma S P A | QUICK COUPLING FOR FLUID IN PRESSURE |
| CN112879694B (en) * | 2021-02-24 | 2022-11-11 | 中航光电科技股份有限公司 | Impact-resistant pressure-relief fluid connector |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3334659A (en) * | 1964-11-02 | 1967-08-08 | Seaton Wilson Mfg Company Inc | Flow stream immersed supporting structure |
| US4685490A (en) * | 1983-01-19 | 1987-08-11 | Swagelok Company | Coupling |
| IT1252000B (en) * | 1991-11-11 | 1995-05-27 | Stucchi Srl | FEMALE FITTING FOR VARIOUS FLUIDS |
| US5179976A (en) * | 1991-12-23 | 1993-01-19 | Aeroquip Corporation | Fluid coupling |
-
1995
- 1995-05-31 IT ITMI951127A patent/IT1275282B/en active IP Right Grant
-
1996
- 1996-05-24 CA CA002177315A patent/CA2177315C/en not_active Expired - Lifetime
- 1996-05-28 JP JP8133436A patent/JP3038315B2/en not_active Expired - Lifetime
- 1996-05-29 EP EP96108542A patent/EP0745802A1/en not_active Withdrawn
Also Published As
| Publication number | Publication date |
|---|---|
| JP3038315B2 (en) | 2000-05-08 |
| IT1275282B (en) | 1997-08-05 |
| EP0745802A1 (en) | 1996-12-04 |
| ITMI951127A1 (en) | 1996-12-01 |
| ITMI951127A0 (en) | 1995-05-31 |
| JPH08334194A (en) | 1996-12-17 |
| CA2177315A1 (en) | 1996-12-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US6543478B2 (en) | Thermostatic mixing valve | |
| US7249751B2 (en) | Ball valve with shear bushing and integral bracket for stem blowout protection | |
| WO2001005211B1 (en) | Gate valve | |
| US5094258A (en) | Screw type valve with ceramic disks | |
| US5799928A (en) | Ball valve with improved valve seat and bonnet assembly | |
| JPS63270984A (en) | Ball valve | |
| KR100389534B1 (en) | Two-port valve | |
| US4687181A (en) | Metering valve | |
| EP0592056A2 (en) | Ball valve | |
| JP3404400B2 (en) | Hemispherical ball valve | |
| GB2157809A (en) | Ball valve with built-in check valve | |
| CA2177315C (en) | Quick coupling for fluids under pressure | |
| US4848401A (en) | Isolation chamber valve | |
| US20050139273A1 (en) | Electromechanically controlled proportional valve | |
| CN112413165B (en) | Pressure-stabilizing ball valve | |
| EP2122214B1 (en) | Valve flow adjustment device | |
| US4036470A (en) | Cantilevered ball valve | |
| CN100404927C (en) | Integrated post-guided seat ring assembly | |
| CN219975513U (en) | Adjusting component of overflow valve and overflow valve | |
| CN2289106Y (en) | Overload oil-adding valve for integral multi-way valve | |
| AU724557B2 (en) | Hemispherical ball valve | |
| SU1427133A1 (en) | Coarse and fine adjustment valve | |
| JPS5830576A (en) | Valve | |
| EP0209965A1 (en) | Metering valve | |
| MXPA99008071A (en) | Ball valve with improved valve seat and bonnet assembly |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKEX | Expiry |
Effective date: 20160524 |