Fluid coupling

Abstract

A fluid coupling may include a valve housing defining an internal fluid passage extending along a longitudinal axis between a first end and a second end of the valve housing; a valve member including a central longitudinal bore and disposed within the valve housing, the valve member operable between an open position and a closed position to permit and block fluid flow through the internal fluid passage, respectively; a handle assembly operably connected to the valve member, the handle assembly being movable between a first position in which the valve member is in a closed position and a second position in which the valve member is in an open position; an interface member secured to the valve housing, the interface member including at least one engagement feature for coupling the fluid coupler with a similarly shaped engagement feature of a second fluid coupler.

Description

Related applications

[0001] This application was filed on January 23, 2024 as a PCT international patent application and claims the benefit of priority to U.S. Provisional Patent Application No. 63 / 440,580 filed on January 23, 2023, the entire contents of which are incorporated herein by reference. Technical Field

[0002] The present disclosure relates to fluid couplings, and more particularly to fluid couplings provided with quick connect and disconnect features. Background Art

[0003] Fluid couplings comprising two identical valved coupling halves are known. In some examples, the fluid couplings are configured such that the valves of the coupling halves cannot be opened until the coupling halves are mated together, and the coupling halves cannot be disconnected until the valves of each coupling halves are closed. This configuration reduces or eliminates spillage when connecting and disconnecting the coupling halves. An example of a known fluid coupling of this type is shown and described in U.S. Patent No. 8,132,781. In some implementations, this type of fluid coupling is used in data center cooling applications requiring a low-spill valved connection to liquid-cooled servers. Improvements are desired. Summary of the Invention

[0004] 18. The fluid coupling of claim 17, wherein the at least one valve member is configured to engage a first end of the valve body and an second end of the valve body, the at least one valve member being configured to engage a second end of the valve body and to engage a second end of the valve body. The at least one valve member is configured to engage a second end of the valve body and an end of the valve body. The at least one valve member is configured to engage a second end of the valve body and an end of the valve body. at an end portion, the sealing member surrounds an internal fluid passage; an interface member formed of a second material different from the first material, secured to the valve housing, the interface member including at least one engagement feature for coupling the fluid connector to a similarly shaped engagement feature of a second fluid connector; a buffer seal member surrounding an outer periphery of the interface member; and an interlock assembly arranged to prevent the handle assembly from moving the valve member from a closed position to an open position unless the interface member is coupled to the second fluid connector, and the interlock assembly being arranged to prevent the interface member from being disconnected from the second fluid connector unless the handle assembly is moved into the closed position.

[0005] In some examples, the first material is a metallic material and the second material is a polymer material.

[0006] In some examples, a protrusion-receiver arrangement is provided that includes a first portion associated with the valve housing and a cooperating second portion associated with the interface member, wherein the protrusion-receiver arrangement has a single rotational symmetry such that the interface member can only be mounted to the valve housing in a single rotational orientation.

[0007] In some examples, the interface member is secured to the valve housing by one or more fasteners.

[0008] In some examples, the interlock assembly includes a first pin extending through the valve housing and the interface member, the first pin being movable by a handle such that when the handle is in a first position, the first pin is in a retracted position such that the distal end of the pin is recessed from the front face of the interface member, and such that when the handle is in a second position, the first pin is in an extended position in which the distal end extends beyond the front face of the interface member.

[0009] The fluid coupling of claim 1 , wherein the valve member includes a first transverse recess received by a projection portion formed in the valve housing, wherein the valve member is rotatable about a transverse axis centered through the first transverse recess and the projection portion.

[0010] In some examples, the valve member includes a second transverse recess for receiving a portion of the handle, the second transverse recess being opposite the first transverse recess.

[0011] In some examples, the interface member and the valve housing cooperatively define a circumferential groove for receiving a portion of the buffer seal member.

[0012] In some examples, a connector portion is provided that is received by the valve housing and forms a portion of the internal fluid passageway.

[0013] In some examples, the connector portion is secured to the valve housing by a snap ring.

[0014] A fluid coupling may include: a valve housing defining an internal fluid passage extending along a longitudinal axis between a first end and a second end of the valve housing, the valve housing being formed of a first material; a valve member including a central longitudinal bore and disposed within the valve housing, the valve member being operable between an open position and a closed position to respectively permit and block fluid flow through the internal fluid passage; a handle assembly operably connected to the valve member, the handle assembly being movable between a first position and a second position, wherein the first position comprises the valve member being in the closed position and the second position comprises the valve member being in the open position; and an interface member formed of a second material different from the first material, secured to the valve housing, the interface member comprising at least one engagement feature for coupling the fluid coupling to a similarly shaped engagement feature of a second fluid coupling. In some examples, the first material is a metallic material, and the second material is a polymeric material. In some examples, a projection-receiver arrangement is provided, the projection-receiver arrangement including a first portion associated with the valve housing and a second portion cooperating with the interface member, wherein the projection-receiver arrangement has a single rotational symmetry such that the interface member can only be mounted to the valve housing in a single rotational orientation. In some examples, the interface member is secured to the valve housing by one or more fasteners. In some examples, an interlock assembly is provided, the interlock assembly being arranged to prevent the handle assembly from moving the valve member from a closed position to an open position unless the interface member is coupled to a second fluid coupler, and the interlock assembly being arranged to prevent the interface member from being decoupled from the second fluid coupler unless the handle assembly is moved into the closed position. In some examples, the interlock assembly includes a first pin extending through the valve housing and the interface member, the first pin being movable by the handle assembly such that when the handle is in a first position, the first pin is in a retracted position such that the distal end of the pin is recessed from the front face of the interface member, and such that when the handle assembly is in a second position, the first pin is in an extended position such that the distal end extends beyond the front face of the interface member. In some examples, the valve member includes a first transverse recess that is received by a protrusion portion formed in the valve housing, wherein the valve member is rotatable about a transverse axis centered through the first transverse recess and the protrusion portion. In some examples, the valve member includes a second transverse recess for receiving a portion of the handle assembly, the second transverse recess being opposite the first transverse recess. In some examples, a buffer seal member is provided that surrounds the outer periphery of the interface member. In some examples, the interface member and the valve housing cooperatively define a circumferential groove for receiving a portion of the buffer seal member. In some examples, a connector portion is provided and is received by the valve housing and forms a portion of the internal fluid passage. In some examples, a sealing member is provided that is fixed to the first end of the valve housing and surrounds the internal fluid passage.In some examples, the interface member includes a ramp surface for receiving and guiding the engagement feature during coupling.

[0015] A fluid coupling may include: a valve housing defining an internal fluid passage extending along a longitudinal axis between a first end and a second end of the valve housing; a valve member including a central longitudinal bore and disposed within the valve housing, the valve member operable between an open position and a closed position to respectively permit and block fluid flow through the internal fluid passage; a handle assembly operably connected to the valve member, the handle assembly movable between a first position in which the valve member is in a closed position and a second position in which the valve member is in an open position; and an interface member secured to the valve housing, the interface member including at least one engagement feature for coupling the fluid coupling to a similarly shaped engagement feature of a second fluid coupling. In some examples, the valve housing is formed of a first material, and the interface member is formed of a second material different from the first material. In some examples, the valve member is formed of the first material. In some examples, a handle of the handle assembly is formed of the first material. In some examples, a connector portion is provided that is received by the valve housing and forms a portion of the internal fluid passage, the connector portion being formed of the first material. In some examples, the first material is a metallic material and the second material is a polymer material.

[0016] A fluid coupling may include: a body defining an internal fluid passage extending along a longitudinal axis; a valve member including a central longitudinal bore and disposed within the body, the valve member operable between an open position and a closed position to respectively permit and block fluid flow through the internal fluid passage; a handle assembly operably connected to the valve member, the handle assembly movable between a first position in which the valve member is in a closed position and a second position in which the valve member is in an open position; an interface including at least one engagement feature for coupling the fluid coupling to an engagement feature of a second fluid coupling, the interface defining an axially tapered ramp surface; and an interlock assembly. The interlock assembly is configured to: prevent the handle assembly from moving the valve member from the closed position to the open position unless the interface member is coupled to the second fluid coupling such that components of the interlock assembly have rotated past and out of contact with the interface ramp surface of the second fluid coupling; and prevent the interface member from decoupling from the second fluid coupling unless the handle assembly is moved to the closed position. In some examples, the interlock assembly includes a first pin that prevents relative rotation between the fluid couplers when in an extended position, and includes a second pin that prevents the first pin from moving unless the second pin is in a retracted position, wherein the component of the interlock assembly is the second pin. In some examples, the fluid coupler is capable of rotating relative to the second fluid coupler between an initial aligned angular position and a fully coupled angular position, and wherein the second pin contacts the ramp surface within at least one-third of the first angular distance between the initial aligned angular position and the fully coupled angular position. In some examples, the first angular distance is approximately 75 degrees. In some examples, the second pin contacts the ramp surface during a rotation of at least 30 degrees between the initial aligned angular position and the fully coupled angular position. In some examples, the interface and the body are integrally formed together. In some examples, the interface and the body are formed separately and secured together by fasteners. In some examples, the interface is integrally formed with the body. In some examples, a fluid coupling arrangement is provided that includes a first fluid coupling and a second fluid coupling that is identical to the first fluid coupling and is removably coupled to the first fluid coupling, wherein each of the first fluid coupling and the second fluid coupling is a fluid coupling as described above.

[0017] A fluid coupler may include: a valve housing defining an internal fluid passage extending along a longitudinal axis, the valve housing defining an interface including at least one engagement feature for coupling the fluid coupler to an engagement feature of another fluid coupler, the interface defining a ramp surface tapering in an axial direction; a valve member including a central longitudinal bore and disposed within the valve housing, the valve member operable between an open position and a closed position to respectively permit and block fluid flow through the internal fluid passage; a handle assembly operably connected to the valve member, the handle assembly movable between a first position in which the valve member is in the closed position and a second position in which the valve member is in the open position; and an interlock assembly arranged to: prevent the handle assembly from moving the valve member from the closed position to the open position unless the interface member is coupled to a second fluid coupler such that components of the interlock assembly have rotated past and out of contact with the interface ramp surface of the second fluid coupler; and prevent the interface member from being decoupled from the second fluid coupler unless the handle assembly is moved into the closed position. In some examples, an interlock assembly includes a first pin that, when in an extended position, prevents relative rotation between the fluid couplers, and a second pin that prevents the first pin from moving unless the second pin is in a retracted position, wherein the component of the interlock assembly is the second pin. In some examples, the fluid coupler is rotatable relative to the second fluid coupler between an initially aligned angular position and a fully coupled angular position, and wherein the second pin contacts the ramp surface within at least one-third of a first angular distance between the initially aligned angular position and the fully coupled angular position. In some examples, the first angular distance is approximately 75 degrees. In some examples, the second pin contacts the ramp surface during at least 30 degrees of rotation between the initially aligned angular position and the fully coupled angular position. In some examples, a fluid coupler arrangement is provided, comprising a first fluid coupler and a second fluid coupler, the second fluid coupler being identical to the first fluid coupler and removably coupled to the first fluid coupler, wherein each of the first and second fluid couplers is a fluid coupler described above. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The following drawings, which form a part of this application, illustrate the described technology and are not meant to limit the scope of the disclosure in any way.

[0019] Figure 1 is a front perspective view of a fluid coupling having features according to the present disclosure.

[0020] Figure 2 yes Figure 1 Rear perspective view of the fluid coupling shown in .

[0021] Figure 3 yes Figure 1 A first side view of a fluid coupling is shown in FIG.

[0022] Figure 4 yes Figure 1 A second side view of the fluid coupling shown in FIG.

[0023] Figure 5 yes Figure 1 A third side view of the fluid coupling shown in FIG.

[0024] Figure 6 yes Figure 1 A fourth side view of the fluid coupling shown in FIG.

[0025] Figure 7 yes Figure 1 A first end view of the fluid coupling shown in FIG.

[0026] Figure 8 yes Figure 1 A second end view of the fluid coupling shown in FIG.

[0027] Figure 9 yes Figure 1 An exploded perspective view of the fluid coupling shown in FIG.

[0028] Figure 10 yes Figure 1 An exploded perspective view of a portion of a fluid coupling is shown in FIG.

[0029] Figure 11 yes Figure 1 Longitudinal cross-sectional view of a fluid coupling shown in , wherein the fluid coupling is in an open position.

[0030] Figure 12 yes Figure 1 Longitudinal cross-sectional view of a fluid coupling shown in , wherein the fluid coupling is in a closed position.

[0031] Figure 13 yes Figure 1 A partial cross-sectional view of a fluid coupling shown in , wherein the fluid coupling is in an open position.

[0032] Figure 14 yes Figure 1 A partial cross-sectional view of a fluid coupling shown in , wherein the fluid coupling is in a closed position.

[0033] Figure 15 yes Figure 1 A perspective view of the handle assembly of the fluid coupling shown in FIG.

[0034] Figure 16 yes Figure 15 An exploded perspective view of the handle assembly shown in FIG.

[0035] Figure 17 yes Figure 1 A front perspective view of the valve housing of the fluid coupling shown in FIG.

[0036] Figure 18 yes Figure 17 Rear perspective view of the valve housing shown in .

[0037] Figure 19 yes Figure 17 A side view of the valve housing is shown in FIG.

[0038] Figure 20 yes Figure 17 A cross-sectional view of the valve housing is shown in FIG.

[0039] Figure 21 yes Figure 1 A front perspective view of an interface member of a fluid coupling is shown in FIG.

[0040] Figure 22 yes Figure 21 A rear perspective view of the interface member shown in .

[0041] Figure 23 yes Figure 21 A front view of the interface component is shown in FIG.

[0042] Figure 24 yes Figure 21 A cross-sectional view of the interface component shown in .

[0043] Figure 25 yes Figure 1 A front perspective view of the connector portion of the fluid coupling shown in FIG.

[0044] Figure 26 yes Figure 25 A side view of the connector portion shown in FIG.

[0045] Figure 27 yes Figure 1 A first perspective view of a valve member of a fluid coupling is shown in FIG.

[0046] Figure 28 yes Figure 27 A second perspective view of the valve member is shown in FIG.

[0047] Figure 29 is a front perspective view of a second example of a fluid coupling having features according to the present disclosure.

[0048] Figure 30 yes Figure 29 Side cross-sectional view of the fluid coupling shown in .

[0049] Figure 31 yes Figure 29 Side view of the fluid coupling shown in .

[0050] Figure 32 yes Figure 29 Exploded perspective view of the fluid coupling shown in FIG.

[0051] Figure 33 yes Figure 29 A front perspective view of the valve housing of the fluid coupling shown in FIG.

[0052] Figure 34 yes Figure 33 An end view of the valve housing is shown in FIG.

[0053] Figure 35 yes Figure 33 A side view of the valve housing is shown in FIG.

[0054] Figure 36 yes Figure 33 A cross-sectional side view of the valve housing is shown in FIG.

[0055] Figure 37 yes Figure 29 A first perspective view of a valve member of a fluid coupling is shown in FIG.

[0056] Figure 38 yes Figure 37 A side cross-sectional view of the valve member is shown in FIG. DETAILED DESCRIPTION

[0057] An example fluid coupling assembly is described and illustrated herein. Various specific features and components are characterized in detail. Many of these features and components may be employed to provide advantages. There is no specific requirement that the various individual features and components be employed in an overall assembly having all of the described features and characteristics in order to provide a benefit according to this disclosure. Furthermore, any examples set forth in this specification are not intended to be limiting and merely set forth some of the many possible embodiments of the appended claims.

[0058] See also Figures 1 to 14, presents a fluid coupler 100. In one aspect, two of the fluid couplers 100 can be coupled together to form a connected assembly. The fluid coupler 100 can also be coupled to a second, different fluid coupler having compatible connection features. In one aspect, the fluid coupler includes a valve housing 102 defining a central passage 102n, an interface member 104 secured to a first end 102a of the valve housing 102, and a connector portion 106 secured at a second end 102b of the valve housing. The interface member 104 is configured to engage with the interface member 104 of the second fluid coupler 100 so that the fluid couplers 100 can be physically coupled together. The connector portion 106 is configured to connect to a pipe or conduit and can be provided with various interfaces, such as inwardly facing threads. Alternatively, and as Figures 29 to 38 In the second embodiment shown in FIG, the connector portion 106 may be provided with a barbed hose fitting. For reference, Figures 17 to 20 The valve housing 102 is shown separately. Figures 21 to 24 The interface member 104 is shown separately and is Figure 25 and Figure 26 The connector portion 106 is shown in isolation. In one aspect, the valve housing 102 and the connector portion 106 define an internal fluid passageway 110 that extends along the longitudinal axis X of the fluid coupling 100.

[0059] The fluid coupling 100 is further shown to include a valve member 112 that defines a central bore 112a and is disposed within the internal fluid passage 110 of the valve housing 102. A handle assembly 114 is also provided and operably connected to the valve member 112. For reference, Figure 15 and Figure 16 The handle assembly 114 is shown separately, while Figure 27 and Figure 28 The valve member 112 is shown in isolation. The handle assembly 114 is operable to move the valve member 112 between an open position and a closed position to respectively allow and block fluid flow through the internal fluid passageway. Figures 1 to 8 and Figure 12 The handle assembly 114 is shown positioned so that the valve member 112 is in the closed position. Figure 11 and Figure 13 The handle assembly 114 is shown positioned so that the valve member 112 is in the open position. Figures 10 to 12 Most easily seen, a sealing member 154 including a sealing portion 154 a and a sealing support 154 b overmolded thereto is provided to form a seal between the valve member 112 and the valve housing 102 .

[0060] The fluid coupling 100 is further shown to include a primary sealing member 118, which is supported in a recess 102m at the first end 102a of the valve housing 102 and surrounds the internal fluid passage 110. The primary sealing member 118 is configured to seal against a corresponding primary sealing member 118 of the second fluid coupling 100. The fluid coupling 100 is further shown to include a buffer sealing member 120 mounted to the outer periphery of the interface member 104. As shown, the interface member 104 and the valve housing 102 form a groove 158, in which a portion of the buffer sealing member 120 can be received and retained. The buffer sealing member 120 is configured to abut against a corresponding buffer sealing member of the second fluid coupling 100 to provide buffer-to-buffer contact between the connected fluid couplings 100, so as to form an overall seal to prevent the ingress of contaminants. The primary sealing member 118 and the buffer sealing member 120 can be formed of various materials, such as natural or synthetic rubber, for example, a rubber material based on EPDM (ethylene propylene diene monomer).

[0061] In one aspect, the connector portion 106 is provided with a central passage 106a that forms part of the internal fluid passage 110. Figure 25 and Figure 26 As can be most easily seen, the connector portion 106 is further shown as having a first recess 106b, a second recess 106c, and a third recess 106d. The first recess 106b and the second recess 106c are configured to receive sealing members 148, 150, which are shown as O-rings. The third recess 106d is configured to receive a snap ring 152, which is also received in a recess in the valve housing 102 and serves to secure the connector portion 106 to the valve housing 102.

[0062] The fluid coupling 100 is further shown as being provided with an interlock assembly 116. Generally speaking, the interlock assembly 116 is used to prevent the handle assembly 114 from moving the valve member 112 from the closed position to the open position unless the interface member 104 is coupled to the second fluid coupling 100, and the interlock assembly is further arranged to prevent the interface member 104 from being decoupled from the second fluid coupling unless the handle assembly 114 is first moved to the closed position. Figure 10 Most easily seen, the interlock assembly 116 includes a first pin 122, a second pin 124, a ball member 126, and a spring member 128. Figure 13 and Figure 14As best seen, the first pin 122 is received in the first bore 102c of the valve housing 102 and the coaxially aligned first bore 104a of the interface member 104, while the second pin 124 is received in the second bore 102d of the valve housing 102 and the coaxially aligned second bore 104b of the interface member. A spring member 128 is also disposed in the second bore 102d of the valve housing and biases the second pin 124 into the extended position, as shown. Figure 14 In this extended position, the ball member 126, which can travel between the first hole 102c and the second hole 102d, is pushed into the first hole by the second pin 124 and into the recess 122a of the first pin 122 to prevent axial movement of the first pin 122. Figure 14 As shown, the first pin 122 can be characterized as being locked in place in a retracted position within the first bore 102c. When the two fluid couplings 100 are coupled together, the front face 104d of the opposing coupling interface member 104 presses the second pin 124 into the second bore 102d toward the valve housing second end 102b. In this position, the recess 124a of the second pin 124 can receive the ball member 126, thereby allowing the ball member 126 to move out of the first bore 102c so that the first pin 122 can travel axially within the first bore 102c. Figure 14 As shown, the handle assembly 114 is provided with a handle member 130 having teeth 130a that engage corresponding teeth 122b in the first pin 122, and the handle member is oriented so that the valve member 112 is in the closed position when the first pin is in the retracted position. Accordingly, when the fluid coupler 100 is in the disconnected state so that the second pin 124 is in the extended position, the first pin 122 is locked in the locked retracted position by means of the ball member 126 to prevent the handle member from operating the valve member from the closed position to the open position. When the fluid coupler 100 is in the coupled state so that the second pin 124 is in the depressed position, the handle member is enabled to operate the valve member from the closed position to the open position by means of the ball member 126 moving into the recess 124a of the second pin 124 and out of the first hole 102c. Figure 13 Show the location.

[0063] The valve housing 102 is further shown as being provided with a third aperture 102e, while the interface member 104 is shown as being provided with a coaxially aligned third aperture 104c. The third apertures 102e, 104c are oriented such that when the fluid couplers 100 are coupled together, these third apertures are directly opposite the first apertures 102c, 104a. Thus, when the fluid couplers 100 are in a coupled state and the handle member 130 is rotated to move the valve member 112 into the open position, the interaction of the teeth 122b and 130a causes the first pin 122 to move into an extended position beyond the front face 104d of the interface member 104 and into the third apertures 102e, 104c of the second fluid coupler 100. Accordingly, when either first pin is in the extended position (i.e., when either valve member 112 is in the open position), the coupled fluid couplers 100 are prevented from rotating relative to each other and, thereby, from decoupling from each other. Thus, this configuration prevents an operator from accidentally decoupling two connected fluid couplers unless both fluid couplers 100 have been operated to position the valve member 112 in the closed position.

[0064] refer to Figure 15 and Figure 16 , the handle assembly 114 is shown separately so that the components can be more easily seen. As referenced above, the handle assembly 114 includes a handle member 130 having teeth 130a for interacting with a first pin. The handle member 130 is further provided with a rod 130b including a pair of flat sides 130c received into corresponding recesses 112b of the valve member 112. The rod 130b is further provided with a recess 130d for receiving a sealing member 134, which forms a fluid-tight seal between the handle member 130 and the aperture 102j of the valve housing 102 through which the rod 130b is received. The handle member 130 is further shown as defining a hole 130e through the rod 130b for receiving a fastener 136. In one aspect, the fastener 136 is provided with a recess 136a for receiving a sealing member 138 so that a fluid-tight seal can be formed between the fastener 136 and the handle member 130. As shown in Figure 11 and Figure 12 Most easily seen, the fastener 136 is received by the insert 140, which in turn is received in the recess 112c of the valve member 112. In the example shown, the fastener 136 is provided with outwardly facing threads that are received by inwardly facing threads of the insert 140. In one example, the insert 140 can be press-fit into the valve member 112. In an alternative arrangement, the valve member can be provided with inwardly facing threads for direct engagement with threads on the fastener 136. Other connection arrangements are possible. Figure 11 and Figure 12The valve housing 102 is also shown formed with an integrally formed protrusion 102k which is received in a correspondingly shaped recess 112d of the valve member 112. In this way, the valve member 112 is rotationally supported at opposite ends by the protrusion 102k and the valve stem 130b.

[0065] In one example, the fastener 136 and the insert 140 are formed of a metallic material, while the valve member 112 is formed of a non-metallic material, such as a polymeric material. In one aspect, the handle assembly 114 is further shown as being provided with a pin 142 and a spring 144 disposed in the first hole 130g of the handle member 130, and a ball member 146 disposed in the interconnected second hole 130f of the handle member. The spring 144 biases the pin 142 to an extended position within the first hole 130g, such that the pin 142 blocks the ball member 146 from fully displacing within the second hole 130f. When the operator presses the pin 142 into the first hole 130g, the recess 142a of the pin 142 receives the ball member 146, such that the ball member 146 can be fully received in the second hole 130f. As shown in FIG. Figure 17 Most easily seen, valve housing 102 is provided with detents 102g, 102h configured to receive ball member 146 when handle member 130 is in the fully open or fully closed position, respectively. With this configuration, handle member 130 is prevented from moving out of either position unless the operator depresses pin 142, allowing ball member 146 to move into second aperture 130f and out of detents 102g, 102h. This feature is a redundant safety feature of interlock assembly 116, further preventing unintentional movement of handle member 130. Valve housing 102 is further provided with a curved racetrack-like surface 102i extending between the detents, such that when the handle is moved between these positions and pin 142 is in the extended state, this curved guide surface supports ball member 146.

[0066] refer to Figure 21 and Figure 24, the interface member 104 is shown as an integrally formed component including the aforementioned apertures 104a, 104b, 104c, as well as additional features. In one aspect, the interface member is generally formed into an annular structure defining a front face 104d and a rear face 104e that extend to an outer peripheral edge 104f and define a central opening 104g. In one aspect, the interface member 104 includes a first pair of countersunk bores 104h, 104i for receiving fasteners 156 extending through corresponding apertures 102p, 102q in the valve housing 102. Using this configuration, the interface member 104 can be secured to the valve housing 102 with the rear face 104e adjacent the front face 102r of the valve housing 102 and with the head of the fastener 156 flush with the front face 104d of the interface member 104. The interface member 104 is further shown as being provided with a first radially outwardly facing recess 104aa and a second radially outwardly facing recess 104ab for receiving correspondingly shaped protrusions 102aa, 102ab extending from the front face 102r of the valve housing 102. In one aspect, the recesses 104aa, 104ab each form one half of a countersunk hole 104ac, while the receiving protrusions 102aa, 102ab form the other half of the countersunk hole. Thus, when the interface member 104 is mounted to the valve housing, the recess 104aa and protrusion 102aa form the countersunk hole 104ac, while the recess 104ab and protrusion 102ab form the countersunk hole 104ad for receiving additional fasteners 156, which are used to secure the interface member 104 to the valve housing 102 via the holes 102ah, 102ai in the housing 102. In the example shown, the recesses 104aa, 104ab and the protrusions 102aa, 102ab extend along axes oblique to radial lines extending from the longitudinal axis X. Other arrangements are possible. For example, these features can extend in a direction coaxial with or parallel to radial lines extending from the longitudinal axis X. In one example, the recess 104aa and the protrusion 102aa can be provided with different shapes or configurations than the corresponding recess 104ab and the protrusion 102ab. Additional positioning and locating arrangements are provided in the recesses 102ae, 102af, 102ag, which are provided in the face of the housing 102 to receive corresponding protrusions 104ae, 104af, 104ag in the rear face of the interface member 104. These arrangements advantageously ensure that the interface member 104 can only be mounted to the valve housing 102 in a single rotational orientation, thereby ensuring that the interlocking assembly features discussed above and the coupling or mating features discussed below of the interface member 104 and the valve housing 102 are properly aligned. In one aspect, the arrangement associated with positioning the valve housing 102 and the interface member 104 can be characterized as having single-fold symmetry about the longitudinal axis X. Other configurations involving differently shaped recesses and protrusions are possible.For example, the radial length or dimension of recess 104aa and protrusion 102aa may be longer or shorter than the corresponding radial length or dimension of recess 104ab and protrusion 102ab. Note that for purposes of illustrating other features of fluid coupling 100, fastener 156 is shown only in FIG. Figure 1 In one aspect, the recesses 104aa, 104ab and the protrusions 102aa, 102ab can be characterized as forming a protrusion-receiver arrangement, wherein the recesses 104aa, 104ab form a first portion of the arrangement and the protrusions 102aa, 102ab form a second portion of the arrangement.

[0067] The interface member 104 is further shown as being provided with a first arcuate protrusion 104j and a second arcuate protrusion 104k, both extending from the front face 104d. The arcuate protrusions 104j, 104k are provided with radially outwardly extending flanges 104m, 104n, respectively, which present axially inwardly facing surfaces 104p, 104q facing the front face 104d. It should be noted that the first arcuate protrusion 104j is provided with a greater circumferential arcuate length than the second arcuate protrusion 104k. The interface member 104 further includes a first arcuate recessed portion 104r adjacent to the first arcuate recessed portion 104r and a first arcuate overhang portion 104s extending between the first arcuate recessed portion 104r and the second arcuate protrusion 104k. In one aspect, the first arcuate overhang portion 104s presents an axially inwardly facing surface 104t. The interface member 104 also includes a second arcuate recessed portion 104u adjacent to the second arcuate protrusion 104k and a second arcuate overhang portion 104v extending between the second arcuate recessed portion 104u and the first arcuate protrusion portion 104j. In one aspect, the second arcuate overhang portion 104v presents an inwardly axially facing surface 104w. The second arcuate overhang portion 104v is further shown as including an arcuate ramp surface 104x that slopes in a direction from the front face 104d toward the rear face 104e and in a direction from the first arcuate protrusion 104j toward the second arcuate recessed portion 104u. In one aspect, the protrusions 104j, 104k, the arcuate recessed portions 104r, 104u, and the overhang portion 104s, including the overhang portion 104v of the ramp portion 104x, define an inner circumferential edge 104y of the central opening 104g of the interface member 104. In the illustrated configuration, the inner circumferential edge 104y is closest to the longitudinal axis X at the location of the protrusions 104j, 104k and furthest from the longitudinal axis at the location of the recessed portions 104r, 104u, with the overhang portions 104s, 104v defining an intermediate location of the inner circumferential edge 104y. The inner circumferential edge 104y gradually tapers from the radially inner edge of the second arcuate overhang portion 104v to the radially inner edge of the second arcuate recessed portion 104u at the location of the arcuate ramp portion 104x. Accordingly, the inner circumferential edge 104y can be characterized as having a varying radial profile and / or a varying radius.

[0068] refer to Figure 17, illustrates additional features of the valve housing 102 that cooperate with the interface member 104. In one aspect, the valve housing 102 defines a pair of identical, spaced-apart arcuate recesses 102s, 102t disposed about a circumferential wall 102o that defines a recess 102m for the sealing member 118. Each of the recesses 102s, 102t is further defined by end walls 102u, 102v extending from the wall 102o and an outer circumferential wall portion 102w, 102x extending between the end walls 102u, 102v. Each of the walls 102o, 102u, 102v, 102w, 102x extends from an axially facing wall 102z of the recess. In one aspect, the outer circumferential wall portion 102w is located further from the longitudinal axis X than the outer circumferential wall portion 102x, such that the recesses 102s, 102t have a greater width at the location of the outer circumferential wall portion 102w. A transition portion 102y is provided between the circumferential wall portions 102w, 102x.The valve housing 102 is further shown as having a first protrusion 102aa and an opposing second protrusion 102ab both extending from the front face 102r.

[0069] When the interface member 104 is mounted to the valve housing 102 in the manner described above, the above features of each component are aligned as follows: the inner circumferential surfaces of the first arched protrusion 104j and the second arched protrusion 104k are aligned with the circumferential wall 102o; the end walls 102u, 102v are aligned with the radial side edges of the first arched protrusion 104j and the second arched protrusion 104k; the inner circumferential edge 104y defined by the arched recessed portions 104r, 104u is aligned with the outer circumferential wall portion 102w; the overhanging portions 104s, 104v, including the ramp surface 104x, extend radially inward and beyond the outer circumferential wall portion 102x to form a recess, with the exposed axially inward-facing surfaces 104p, 104q facing the axial wall surface 102z of the recess. Using this configuration, two fluid couplers 100 can be coupled together by first aligning the protrusions 104j, 104k of each fluid coupler 100 with the recessed portions 104r, 104u of the opposing fluid coupler 100, then receiving the protrusions 104j, 104k into the recessed portions 104r, 104u, and then rotating the fluid couplers 100 relative to each other so that the axially inwardly facing surfaces 104p, 104q engage the rear sides of the overhangs 104s, 104v until the protrusions 104j, 104k abut the respective end walls 102u, 102v. The presence of the arcuate ramp surface 104x simplifies the coupling operation because the fluid connectors 100 do not need to be perfectly aligned with each other, as misalignment will result in contact between the first arcuate protrusion 104j and the ramp surface 104x. Once this contact occurs and the operator rotates the fluid couplings 100 relative to each other, the protrusions 104j are guided along the ramped surfaces 104x until they fall into the corresponding recessed portions 104r, 104u and into the arcuate recesses 102s, 102t. The ramped surfaces 104x also advantageously create a rotational delay that ensures that the protrusions 104j, 104k must be received through the recessed portions 104u, 104u and engage the inwardly facing surfaces 104p, 104q before the end of the second pin 124 is fully depressed by the opposing front face 104d of the fluid coupling 100. In this position, the primary sealing members 118 of each fluid coupling 100 are in sealing contact with each other, defining a sealed fluid passageway through both fluid couplings 100. In the fully coupled position, the buffer seal members 120 are also in sealing contact with each other. As configured, the fluid coupler 100 must be rotated approximately 75 degrees from the initial aligned position to reach the fully coupled position.

[0070] In one aspect, the presence of the arcuate ramp surface 104x serves to delay the full depression of the second pin 124 of each fluid coupler 100 during the coupling process. Once the fluid couplers 100 are initially aligned with each other, such that the protrusions 104j, 104k are received in the recessed portions 104, 104u, the distal end of each second pin 124 initially contacts the ramp surface 104x. As the ramp surface 104x is inclined axially, relative rotation of the fluid couplers 100 gradually depresses the second pins 124 as they slide along the ramp surface 104x during approximately 32 degrees of rotation from the initial aligned position. The second pins 124 contact the ramp surface 104x for the majority of this rotational distance. Thus, the pins 124 are fully depressed only after the fluid coupler 100 rotates through the final rotational stage, such that the second pins 124 move past the ramp surface 104x. Thus, the disclosed configuration ensures that the handle assembly 114 cannot be operated to any extent and the valve member 112 cannot be opened until the fluid coupler 100 is almost completely coupled together. In one aspect, the ramp surface 104x delays pin compression by approximately 30 degrees. Thus, the valve can open during the last 45 degrees (e.g., 75 degrees to fully engage - 30 degree delay = 45 degrees). This delay is significant because the lugs engage at this point sufficiently to hold the two coupler halves together against internal pressure and against the pin 122 that is expected to extend outward when attempting to open the valve. This is a significant advantage over standard fluid couplers that do not include ramp surfaces, because such standard fluid couplers inherently allow for unintentional, substantial opening before the fluid coupler is fully coupled. The ramp surface 104x can also advantageously provide an inclined surface for guiding the two fluid couplers 100 into an initial aligned position, whereby contact between the protrusions 104j, 104k and the ramp surface 104x allows the fluid couplers to be guided along the ramp surface 104x until the protrusions fall into the corresponding recessed portions 104r, 104u and into the arcuate recesses 102s, 102t.

[0071] refer to Figures 29 to 38 , a second example of a fluid coupling 100 is presented. Since many features of the previously described fluid coupling 100 overlap with those of this example, the descriptions of those features already provided are fully applicable and need not be repeated here. Instead, this section summarizes the differences between the two embodiments. In one aspect, Figures 29 to 38The primary difference in the fluid coupling 100 shown in FIG is that the valve housing 102 incorporates the features of the interface member 104 into a single, integrally formed component, rather than being a two-part design. Accordingly, the valve housing 102 defines a front face 104 that coincides with the front face 102r and the first end 102a; apertures 104a, 104b, and 104c that coincide with apertures 102c, 102d, and 102e to form a single structure; arcuate protrusions 104j, 104k; flanges 104m, 104n; arcuate recessed portions 104r, 104u that coincide with recesses 102s, 102t to form a single structure; overhangs 104s, 104v; an arcuate ramp surface 104x; and an inner circumferential edge 104y. Due to this configuration, Figures 29 to 36 The valve housing 102 shown in FIG. 1 also integrally defines a groove 158 shown as having a concave, rounded cross-sectional shape, such that the groove 158 can receive a buffer seal member 120 configured as an O-ring, as shown in FIG. Figure 30 If desired, the groove 158 can also be configured to have a rectangular shape as shown in the previous embodiment to accommodate a similarly shaped buffer seal member 120. Similarly, the groove 158 of the previous embodiment can be configured to have a rounded shape of the type shown in this embodiment to accommodate an O-ring-shaped buffer seal member 120.

[0072] As in Figure 29 and Figure 36 As can be most easily seen, the valve housing 102 is provided with an opening or recess 102k, rather than the protrusion 102k of the previous example. The opening or recess 102k is configured to receive a corresponding protrusion 112d of the valve member 112, as shown in FIG. Figure 30 The valve member 112 is further provided with a recess 112e extending through the protrusion 112d, which can be configured to receive the valve stem 130b. Figures 29 to 38 The recess / protrusion configuration shown in the valve assembly can be applied to Figures 1 to 28 Similarly, Figures 1 to 28 The protrusion / recess configuration of the illustrated embodiment can be applied to Figures 29 to 38 The embodiment shown.

[0073] In some examples, Figures 1 to 28 The valve assembly 100 and Figures 29 to 38 The valve assembly may be provided with a release sleeve of the type shown and described in U.S. Patent No. 5,226,682, the entire contents of which are incorporated herein by reference, to facilitate decoupling of the connector portion 106 from the valve housing 102. Figures 29 to 38The valve housing 102 and valve member 112 shown in FIG are formed of a metallic material. Other materials are possible, such as composite materials.

[0074] While the best modes for carrying out the invention have been described in detail, those familiar with the art to which this invention relates will recognize various alternative designs and embodiments for practicing the invention within the scope of the appended claims.

Claims

1. A fluid connector, comprising: a) a valve housing defining an internal fluid passage extending along a longitudinal axis between a first end and a second end of the valve housing, the valve housing being formed from a first material; b) a valve member including a central longitudinal bore and disposed within the valve housing, the valve member being operable between an open position and a closed position to respectively allow and block fluid flow through the internal fluid passageway; c) a handle assembly operably connected to the valve member, the handle assembly movable between a first position in which the valve member is in the closed position and a second position in which the valve member is in the open position; d) a sealing member fixed to the first end of the valve housing, the sealing member surrounding the internal fluid passage; e) an interface member formed of a second material different from the first material, secured to the valve housing, the interface member including at least one engagement feature for coupling the fluid coupler to a similarly shaped engagement feature of a second fluid coupler; f) a buffer seal member surrounding an outer periphery of the interface member; as well as g) an interlock assembly arranged to prevent the handle assembly from moving the valve member from the closed position to the open position unless the interface member is engaged with the second fluid coupler, and the interlock assembly arranged to prevent the interface member from being decoupled from the second fluid coupler unless the handle assembly is moved into the closed position.

2. The fluid coupling according to claim 1, wherein: The first material is a metallic material, and the second material is a polymer material.

3. The fluid coupling of claim 1 , further comprising: a) a protrusion-receiver arrangement comprising a first portion associated with the valve housing and a cooperating second portion associated with the interface member, wherein the protrusion-receiver arrangement has a single rotational symmetry such that the interface member can only be mounted to the valve housing in a single rotational orientation.

4. The fluid coupling according to claim 1, wherein: The interface member is secured to the valve housing by one or more fasteners.

5. The fluid coupling of claim 1, wherein: The interlock assembly includes a first pin extending through the valve housing and the interface member, the first pin being movable by the handle member such that when the handle member is in a first position, the first pin is in a retracted position such that the distal end of the first pin is recessed from the front face of the interface member, and such that when the handle member is in a second position, the first pin is in an extended position in which the distal end extends beyond the front face of the interface member.

6. The fluid coupling of claim 1, wherein: The valve member includes a first transverse recess received by a projection portion formed in the valve housing, wherein the valve member is rotatable about a transverse axis centered through the first transverse recess and the projection portion.

7. The fluid coupling according to claim 1 or 6, wherein: The valve member includes a second transverse recess for receiving a portion of the handle assembly, the second transverse recess being opposite the first transverse recess.

8. The fluid coupling of claim 1, wherein: The interface member and the valve housing cooperatively define a circumferential groove for receiving a portion of the buffer seal member.

9. The fluid coupling of claim 1 , further comprising: a) A connector portion received by the valve housing and forming a portion of the internal fluid passageway.

10. The fluid coupling of claim 9, wherein: The connector portion is fixed to the valve housing by a snap ring.

11. A fluid coupling comprising: a) a valve housing defining an internal fluid passage extending along a longitudinal axis between a first end and a second end of the valve housing, the valve housing being formed from a first material; b) a valve member including a central longitudinal bore and disposed within the valve housing, the valve member being operable between an open position and a closed position to respectively allow and block fluid flow through the internal fluid passageway; c) a handle assembly operably connected to the valve member, the handle assembly movable between a first position in which the valve member is in the closed position and a second position in which the valve member is in the open position; and d) an interface member formed of a second material different from the first material, secured to the valve housing, the interface member including at least one engagement feature for coupling the fluid coupler to a similarly shaped engagement feature of a second fluid coupler.

12. The fluid coupling of claim 11, wherein: The first material is a metallic material, and the second material is a polymer material.

13. The fluid coupling of claim 11, further comprising: a) a protrusion-receiver arrangement comprising a first portion associated with the valve housing and a cooperating second portion associated with the interface member, wherein the protrusion-receiver arrangement has a single rotational symmetry such that the interface member can only be mounted to the valve housing in a single rotational orientation.

14. The fluid coupling of claim 11, wherein: The interface member is secured to the valve housing by one or more fasteners.

15. The fluid coupling of claim 11, further comprising: a) an interlock assembly arranged to prevent the handle assembly from moving the valve member from the closed position to the open position unless the interface member is engaged with the second fluid coupler, and the interlock assembly arranged to prevent the interface member from being decoupled from the second fluid coupler unless the handle assembly is moved into the closed position.

16. The fluid coupling of claim 15, wherein: The interlock assembly includes a first pin extending through the valve housing and the interface member, the first pin being movable by the handle member such that when the handle member is in a first position, the first pin is in a retracted position such that the distal end of the first pin is recessed from the front face of the interface member, and such that when the handle member is in a second position, the first pin is in an extended position in which the distal end extends beyond the front face of the interface member.

17. The fluid coupling of claim 11, wherein: The valve member includes a first transverse recess received by a projection portion formed in the valve housing, wherein the valve member is rotatable about a transverse axis centered through the first transverse recess and the projection portion.

18. The fluid coupling according to claim 11 or 17, wherein: The valve member includes a second transverse recess for receiving a portion of the handle assembly, the second transverse recess being opposite the first transverse recess.

19. The fluid coupling of claim 11, wherein: The interface member and the valve housing cooperatively define a circumferential groove for receiving a portion of a buffer seal member.

20. The fluid coupling of claim 11, further comprising: a) A connector portion received by the valve housing and forming a portion of the internal fluid passageway.

21. The fluid coupling of claim 11, further comprising: a) A sealing member fixed to the first end of the valve housing, the sealing member surrounding the internal fluid passage.

22. The fluid coupling of claim 11, further comprising: a) A buffer seal member surrounding an outer periphery of the interface member.

23. The fluid coupling of claim 15, wherein: The interface member includes a ramp surface for contacting and guiding components of the interlock assembly during coupling.

24. A fluid coupling comprising: a) a valve housing defining an internal fluid passage extending along a longitudinal axis between a first end and a second end of the valve housing; b) a valve member including a central longitudinal bore and disposed within the valve housing, the valve member being operable between an open position and a closed position to respectively allow and block fluid flow through the internal fluid passageway; c) a handle assembly operably connected to the valve member, the handle assembly movable between a first position in which the valve member is in the closed position and a second position in which the valve member is in the open position; and d) an interface member secured to the valve housing, the interface member including at least one engagement feature for coupling the fluid coupler with a similarly shaped engagement feature of a second fluid coupler.

25. The fluid coupling of claim 24, wherein: The valve housing is formed from a first material, and the interface member is formed from a second material different from the first material.

26. The fluid coupling of claim 25, wherein: The valve member is formed from the first material.

27. The fluid coupling of claim 25 or 26, wherein: The handle member of the handle assembly is formed from the first material.

28. The fluid coupling of any one of claims 24 to 27, further comprising: a) A connector portion received by the valve housing and forming a portion of the internal fluid passage, the connector portion being formed from the first material.

29. The fluid coupling of any one of claims 24 to 28, wherein: The first material is a metallic material, and the second material is a polymer material.

30. A fluid coupling comprising: a) a body defining an internal fluid passage extending along a longitudinal axis; b) a valve member including a central longitudinal bore and disposed within the body, the valve member being operable between an open position and a closed position to respectively allow and block fluid flow through the internal fluid passageway; c) a handle assembly operably connected to the valve member, the handle assembly movable between a first position in which the valve member is in the closed position and a second position in which the valve member is in the open position; d) an interface comprising at least one engagement feature for coupling the fluid coupling with an engagement feature of another fluid coupling, the interface defining a ramp surface that tapers in an axial direction; and e) an interlock assembly arranged to: i. preventing the handle assembly from moving the valve member from the closed position to the open position unless the interface member is coupled to a second fluid coupling such that components of the interlock assembly have rotated past and out of contact with the interface ramp surface of the second fluid coupling; and ii. Preventing the interface member from decoupling from the second fluid coupler unless the handle assembly is moved into the closed position.

31. The fluid coupling of claim 30, wherein: The interlock assembly includes a first pin that prevents relative rotation between the fluid couplers when in an extended position, and a second pin that prevents the first pin from moving unless the second pin is in a retracted position, wherein the component of the interlock assembly is the second pin.

32. The fluid coupling of claim 31, wherein: The fluid coupler is rotatable relative to the second fluid coupler between an initially aligned angular position and a fully coupled angular position, and wherein the second pin contacts the ramp surface within at least one-third of a first angular distance between the initially aligned angular position and the fully coupled angular position.

33. The fluid coupling of claim 32, wherein: The first angular distance is approximately 75 degrees.

34. The fluid coupling of claim 33, wherein: The second pin contacts the ramp surface during at least 30 degrees of rotation between the initially aligned angular position and the fully coupled angular position.

35. The fluid coupling of claim 30, wherein: The interface is formed integrally with the main body.

36. A fluid coupling arrangement comprising: a) a first fluid coupling; as well as b) a second fluid coupling, the second fluid coupling being identical to the first fluid coupling, the second fluid coupling being removably coupled to the first fluid coupling, wherein each of the first fluid coupling and the second fluid coupling is the fluid coupling of claim 30.

37. A fluid coupling comprising: a) a valve housing defining an internal fluid passage extending along a longitudinal axis, the valve housing defining an interface including at least one engagement feature for coupling the fluid coupling with an engagement feature of another fluid coupling, the interface defining a ramp surface tapering in an axial direction; b) a valve member including a central longitudinal bore and disposed within the valve housing, the valve member being operable between an open position and a closed position to respectively allow and block fluid flow through the internal fluid passageway; c) a handle assembly operably connected to the valve member, the handle assembly movable between a first position in which the valve member is in the closed position and a second position in which the valve member is in the open position; and d) an interlocking assembly arranged to: i. preventing the handle assembly from moving the valve member from the closed position to the open position unless the interface member is coupled to a second fluid coupling such that components of the interlock assembly have rotated past and out of contact with the interface ramp surface of the second fluid coupling; and ii. Preventing the interface member from decoupling from the second fluid coupler unless the handle assembly is moved into the closed position.

38. The fluid coupling of claim 37, wherein: The interlock assembly includes a first pin that prevents relative rotation between the fluid couplers when in an extended position, and a second pin that prevents the first pin from moving unless the second pin is in a retracted position, wherein the component of the interlock assembly is the second pin.

39. The fluid coupling of claim 38, wherein: The fluid coupler is rotatable relative to the second fluid coupler between an initially aligned angular position and a fully coupled angular position, and wherein the second pin contacts the ramp surface within at least one-third of a first angular distance between the initially aligned angular position and the fully coupled angular position.

40. The fluid coupling of claim 39, wherein: The first angular distance is approximately 75 degrees.

41. The fluid coupling of claim 40, wherein: The second pin contacts the ramp surface during at least 30 degrees of rotation between the initially aligned angular position and the fully coupled angular position.

42. A fluid coupling arrangement comprising: a) a first fluid coupling; as well as b) a second fluid coupling, the second fluid coupling being identical to the first fluid coupling, the second fluid coupling being removably coupled to the first fluid coupling, wherein each of the first fluid coupling and the second fluid coupling is the fluid coupling of claim 37.

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