MALE COUPLING TO CONNECT TO A FEMALE THREADED COUPLING
BACKGROUND Field of the Invention The present invention relates to fluid couplings and, more particularly, to fluid couplings that are configured to be connected to a female threaded coupling. Description of the Related Art Coupling assemblies for the transmission of gases or fluids can be held together by axial movement of a male coupling towards a female coupling known in the art. In a typical application, a male coupling and a female coupling function as an adapter between a flexible conduit, such as a hose, and an apparatus, such as a pump. Although several methods are commonly used to connect the male coupling to the flexible conduit, such as a hose adapter with tabs, the female coupling is typically connected to a standard female threaded port in the apparatus. Coupling set manufacturers have tried to reduce complexity and costs by integrating the female coupling directly into their customer's device
(known as "direct gate"), thereby eliminating the
need for the standard female threaded gate. However, customers are sometimes reluctant to integrate a particular female coupling from a coupling manufacturer directly into their device because doing so would make it more difficult to convert back to a standard female threaded port. Additionally, customers may be reluctant to integrate a female coupling from a particular manufacturer directly into the appliance because doing so would require them to purchase all of their replacement hoses from the coupling manufacturer. There are continuing efforts to improve upon current designs of coupling assemblies, particularly to reduce the complexity and cost of coupling assemblies as well as to design couplings that are compatible with standard attachments (eg, a standard female threaded gate). Compendium A coupling assembly is disclosed that includes first and second members that can be arranged between uncoupled and coupled positions. The first member has a receiving portion sized to receive at least a portion of the second member and internal threads provided therein. The second member has an outer surface. A ratchet locking member is arranged around the outer surface of the second member and is configured to move between locking and releasing positions. The ratchet locking member
it is also pushed into the locking position and has a retention formation configured to interlock with and link the internal threads of the first member. Upon insertion of the second member within the first member, the retention formation of the ratchet locking member progressively links the internal threads of the first member, thereby locking the first and second members together. A male coupling is disclosed for connecting to a female threaded gate having a receiving portion provided with internal threads. The male coupling includes a body having a front portion, a rear portion, and an exterior surface. The front portion is dimensioned to be received by the receiving portion of the female threaded portion. The male coupling also includes a number of locking member segments disposed about the body and configured to pivot between locking and unlocking positions, where each locking member segment has a retaining formation configured to interlock with and bond the internal threads of the female threaded gate. The male coupling further includes a resilient thrust member configured to urge each segment of the locking member into its locking position. Upon insertion of the male coupling into the female threaded port, the retention formation of each segment of the locking member progressively links the internal threads of the female threaded port, thereby locking
to the male coupling and the female threaded gate together. Brief Description of the Drawings It will be appreciated that the illustrated boundaries of the elements in the drawings represent an example of the boundaries. A person skilled in the art will appreciate that a single element can be designed as multiple elements or that multiple elements can be designed as a single element. An element shown as having an internal characteristic can be implemented as an external characteristic and vice versa. Furthermore, in the accompanying drawings and description that follows, similar parts are indicated through the drawings and the description with the same reference numbers, respectively. The drawings may not be drawn to scale and the proportions of certain elements have been exaggerated for illustration convenience. Figures 1A and IB illustrate cross-sectional views of an embodiment of a coupling assembly 10 in its decoupled and coupled positions, respectively. Figures 2A-2D illustrate cross-sectional views of the coupling assembly 10 in several stages during the coupling operation. Figures 3A-3C illustrate cross-sectional views of the coupling assembly 10 at various stages during the decoupling operation.
Figure 4A illustrates a perspective view of an embodiment of a male coupling member 400 configured to be connected to a female threaded coupling 402. Figure 4B illustrates a cross-sectional view of the male coupling 400 configured to be connected with a threaded coupling. female 402, where male coupling 400 and female threaded coupling 402 are shown in their uncoupled position. Figure 4C illustrates a cross-sectional view of the male coupling 400 and the female threaded coupling 402 in the engaged position. Figures 5A-5D illustrate cross-sectional views of portions of the male coupling 400 and the female threaded coupling 402 in several stages during the coupling operation. Figures 6A-6C illustrate cross-sectional views of portions of the male coupling 400 and the female threaded coupling 402 in several stages during the decoupling operation. Figure 7 illustrates a cross-sectional view of a portion of another embodiment of a coupling assembly 700 in its decoupled position. Detailed Description Certain terminology will be used in the following
description for convenience in reference only and will not be limiting. The terms "forward" and "backward" with respect to each component of the coupling assembly will refer to directions toward and away from, respectively, the coupling direction. The terms "up" and
"down" will refer to directions as taken in the drawings in connection with which the terminology is used. All of the above terms include derivatives and normal equivalents thereof. Illustrated in Figures 1A and IB are cross-sectional views of an embodiment of a coupling assembly 10 shown in the decoupled and coupled positions, respectively. The coupling assembly 10 includes a first member 12 and a second member 14 which, together, operate as a push-to-connect coupling assembly, which will be discussed in more detail below. The first member 12 generally functions as the "female" member of the coupling assembly 10 and the second member 14 generally functions as the "male" member of the coupling assembly 10, such that the first member 12 is configured to receive the second member. member 14. Both the first and second members 12, 14 share the same central longitudinal axis A when they are in the engaged position as shown in figure IB. In one embodiment, the first and second members 12, 14 can be formed from carbon steel. In alternative embodiments
The first and second members 12, 14 can be formed from other materials, such as brass, aluminum, stainless steel, and plastic. In the illustrated embodiment, the first member 12 is a female threaded coupling, such as a female threaded gate including a receiving portion 16 having a receiving end 18, a remote portion (not shown) having a remote end (not shown). ), and a passage 20 extending between the receiving end 18 and the remote end that allows fluid to flow therethrough. The remote portion of the first member 12 is provided with external threads for attachment to the internal threads of a separate component (not shown). Alternatively, the female threaded gate can. integrate directly into an appliance, such as a pump, manifold, etc. In an alternative embodiment (not shown), the first member 12 may include other connection means suitable for attachment to a separate component (not shown). With continuous reference to FIGS. 1A and IB, the first member 12 includes a first chamfered surface 22 extending back and inward from the receiving end 18. A set of internal threads 24 extends rearwardly from the threads internal 24a- i. In the illustrated embodiment, the internal threads 24 have a triangular shaped profile when viewed in cross section and includes nine threads 24a-i. In alternative embodiments
(not shown), the internal threads 24 may take the form of other profiles (e.g., trapezoidal, square, or rectangular) when viewed in cross section and include any number of threads. In another alternative embodiment (not shown), the first member 12 may not include the first chamfered surface 22. The remote portion of the first member 12 includes a second inner cylindrical surface 30 having an inside diameter that is smaller than the first surface interior 26. Extending forward and outward from the second inner surface 30 is a tapered surface 32 which meets the first interior surface 26. As shown in Figures 1A and IB, the second member 14 includes a collar 34 which separates a front portion 36 having a front end 38 from a rear portion (not shown) having a rear end (not shown). Extending through the second member 14 from the front end 38 to the rear end (not shown) is a passage 40 which allows fluid to flow therethrough. In one embodiment (not shown), the rear portion of the second member 14 can be connected to a hose nozzle to receive a hose. In alternative embodiments (not shown), the rear portion may be provided with external threads for attachment to the internal threads of another component or may be counter-punched to receive a weldable pipe.
with brass to the second member 14. The front portion 36 of the second member 14 includes a first outer cylindrical surface 42 and a second outer cylindrical surface 44 spaced apart from each other by a first outwardly facing annular groove 46 extending radially inward from of the first and second outer surfaces 42, 44. The first groove 46 is at least partially defined by a third outer cylindrical surface 48. In the illustrated embodiment, the first and second outer surfaces 42, 44 have the same outer diameter which is dimensioned to be received by the second inner surface 30 of the first member 12. In alternative embodiments (not shown), the first and second outer surfaces 42, 44 may have different diameters as long as the first outer surface 42 has a diameter exterior that is dimensioned to be received by the second interior surface 30 of the first member 12. The first exterior surface 42 of the second member 14 includes a second outwardly facing annular groove 50 extending radially inward therefrom. Positioned within the second slot 50 is a support ring 52 constructed of a rigid material, such as plastic, skin, or hard rubber, and an annular seal 54 constructed of a suitable sealing material, such as neoprene or other elastomeric material.
rich. The annular seal 54 is placed in the second groove 50 between the support ring 52 and the front end 38 of the second member 14. The annular seal 54 is dimensioned for receiving by and for sealingly bonding the second interior surface 30 of the first member 12. The support ring 52 is dimensioned for reception by the second inner surface 30 of the first member 12 and serves to protect the annular seal 54 from damage when the coupling assembly 10 is used in high pressure applications. In another embodiment (not shown), the support ring 52 can be removed when the coupling assembly is used in low pressure applications. In another alternative embodiment (not shown), the annular seal and the support ring can be received in a slit in the second inner surface 30 of the first member 12 and is sized to seal the first outer surface 42 of the second member 14. Coupling assembly 10 also includes a ratchet locking member configured to lock the first and second members 12, 14 together. In the illustrated embodiment, the ratchet locking member is in the form of separate, ratchet, locking member segments 56 that are placed within the first slot 46 of the second member 14 and, together, form the locking member. ratchet lock. In one embodiment, the ratchet locking member includes four segments of locking member 56. In
alternative embodiments, the ratchet lock member may include a different number of lock member segments. As shown in Figures 1A and IB, each segment of locking member 56 includes an outer cylindrical surface 58 and an outer tapered surface 60 that are separated from each other by a retention formation that is configured to interlock and engage with internal threads 24 of the first member 12 when the second member 14 is inserted into the first member 12, which is discussed in more detail below. In the illustrated embodiment, the retention formation includes an external partial threaded formation 62 projecting outwardly from the slit 46 beyond the first outer surface 42 of the second member 14. The threaded formation 62 is characterized as being "partial" due to the fact that the ratchet locking member is comprised of locking member segments 56. Thus, the partial threaded formation 62 of each locking member segment 56 comprises only a portion of a threaded formation. However, it will be appreciated that the locking member segments 56, together, form a threaded formation, although the threads may not be continuous since adjacent locking member segments 56 will have a small space between them. In the illustrated embodiment, the partial threaded formation 62 includes three triangular shaped threads 62a-c
when they are observed in cross section. However, in alternative embodiments (not shown), the partial threaded formation 62 may include a different number of threads and / or the threads may take the form of other figures when viewed in cross section (e.g., square , rectangular, or trapezoidal), as long as they are capable of interlocking with and bonding with the internal threads 24 of the first member 12. Additionally, in alternative embodiments (not shown), the retention formation may include a plurality of projections or radially discrete outwardly extending protuberances which are capable of linking the internal threads 24 of the first member 12. In these embodiments, the plurality of projections or protrusions extending radially outwardly discrete can take the form of any figure and can be arranged in any pattern as long as they are able to link the internal threads 24 of the first member 12. In the illustrated embodiment, each segment of locking member 56 also includes a front end 64, a rear end 66, and first and second interior surfaces 68, 70. As shown in Figures 1A and IB, the first and second internal surfaces 68, 70 are orient at an angle B relative to each other, such that an edge is formed between the first inner surface 68 and the second inner surface 70. This edge defines a pivot axis P (extending out of the pattern)
around which each segment of locking member 56 pivots. The pivot axis P of each locking member segment 56 is separated from and oriented perpendicular to the longitudinal axis A of the coupling assembly 10. Due to the edge defining the pivot axis P, each segment of locking member 56 is capable of of pivoting between a first position (i.e., a lock position) and a second position (ie, a release position). In the locking position, the first inner surface 68 abuts against the third outer surface 48 of the second member 14 as shown in Figures 1A and IB. In the release position, the locking member segment 56 is pivoted about the pivot axis P in the clockwise direction, such that the second inner surface 70 abuts against the third outer surface 48 of the second member 14. (not shown). It will be appreciated, however, that the release position does not necessarily require that the second inner surface 70 of each segment of locking member 56 abuts against the third outer surface 48 of the second member 14. Instead, each segment of locking member 56 needs only to pivot in the clockwise direction an amount sufficient to provide space between the outer ends of the partial threaded formation 62 of the locking member segments 56 and the inner ends of the internal threads 24 of the first member 12
Provision adjacent to the front end 64 of each lock member segment 56 is an outward facing slit 72 extending radially inward from the outer surface 58 of each lock member segment 56. Joints, slits 72 in the segments of locking member 56 form an annular groove configured to receive an annular resilient pushing member 74. The pushing member 74, which is wrapped around all segments of locking element 56, is configured to push the segments of locking member 56 to its locking positions and due to its resilience, is able to: i) expand radially outwardly when the locking member segments 56 move to their release positions, ii) return the locking member segments 56 to their locking positions without the need for additional force. In the illustrated embodiment, the pushing member 74 is a 0-shaped ring. In alternative embodiments, the pushing member 74 may be a garter spring, divided retaining ring, or an elastomeric or plastic ring . In an alternative embodiment (not shown), the locking member segments 56 can be rotated 180 ° and placed within the first slot 46 such that the retaining formation of each segment of locking member is located closer to the front end 38 of the second member 14. In this embodiment, the push member could be provided in slits facing outwardly on the member segments.
56 adjacent to the rear end of the locking member segments 56. The coupling assembly 10 also includes a release sleeve 76 provided between the segments of the locking member 56 and the collar 34. The release sleeve 76 includes a portion sleeve 78 having a leading end 80 and a flange portion 82 extending radially outwardly from the sleeve portion 78. The sleeve portion 78 of the release sleeve 76 overlaps with a portion of the first slit 46 and a portion of the locking member segments 56. Accordingly, the locking member segments 56 are retained in the first groove 46 on one side by the pushing member 74 and on the other side by the sleeve portion 78 of the sleeve No. 76. In the illustrated embodiment, the release sleeve 76 has a generally L-shaped profile when viewed in cross section. In alternative embodiments (not shown), the locking sleeve can take the form of other profiles when viewed in cross section. The release sleeve 76 sits on the second outer surface 44 of the body in an axially movable arrangement, such that the release sleeve 76 is movable between backward and forward positions. Axial displacement of the release sleeve 76 is limited in the rearward direction by the collar 34 and in the forward direction by the thread
partial backward 62c of each lock member segment 56. The release sleeve 76 is in its rearward position as shown in Figures 1A and IB. To couple the first and second members 12, 14 together, the second member 14 moves forward (in the direction of the arrow C) towards the first member 12 until the forwardmost thread 62a of the partial threaded formation 62 of each segment of locking member 56 links to the internal thread further forward 24a of the first member 12 (FIG. 2A). Upon continuous forward movement of the second member 14, the thread 24a of the first member 12 interacts with and forces the locking member segments 56 to pivot clockwise (in the direction of arrow D) around the pivot axis P against the instance of the pushing element 74, thereby causing the pushing element 74 to expand radially outwards (FIG. 2B). The locking member segments 56 pivot clockwise about the pivot axis P until they function as a cam or "ratchet" on the apex of the first thread 24a. As soon as this occurs, the locking member segments 56 return or "spring back" to their locking position due to the resilience of the thrust element 74, such that the partial forward plus thread 62a of the partial thread formation 62 is entangled with and is linked to the forward plus thread 24a of the first member 12 (Figure 2C).
Upon further forward movement of the second member 14 towards the first member 12, the partial threaded formation 62 of each locking member segment 56 functions as a cam or "ratchet" along the internal threads 24 of the first member 12, by alternating between locking and releasing positions, to progressively interlock with and bond additional internal threads 24 of the first member 12 (i.e., the coupled position of the coupling assembly 10) (Figure 2D). In this position, the engagement of the partial threaded formation 62 of the locking member segments 56 to the internal threads 24 of the first member 12 prevents removal of the second member 14 from the first member 12. When the first and second members 12 , 14 are in the coupled position (figure 2D), the annular seal 54 in the second member 14 is attached in seal manner to the second inner surface 30 of the first member 12, thereby preventing fluid leakage. Since the second member 14 is capable of being connected to a female threaded coupling (e.g., the first member 12), a female adapter can be eliminated by reducing costs as well as a leakage path. Additionally, customers are no longer required to purchase all of their replacement hoses from the coupling set manufacturer. When it is desired to uncouple the second member 14 from the first member 12, the release sleeve 76 moves forward (in the direction of arrow E) from its position
back until it links the tapered surface 60 of each segment of locking member 56 (Fig. 3A). Upon continuous forward movement of the release sleeve 76 to its forward position, the release sleeve 76 interacts with and forces the lock member segments 56 to pivot clockwise (in the direction of arrow F). ) around the pivot axis P against the instance of the pushing element 74, thereby causing the pushing element 74 to expand radially outwardly. Each segment of locking member 56 pivots clockwise until it reaches its release position (Figure 3B). In this position, each segment of locking member 56 collapses in slot 46 to provide the necessary release to allow each segment of locking member 56 to slide axially beyond the internal threads 24 of first member 12. Accordingly, the second member 14 can be disconnected from the first member 12 resulting in the coupling assembly 10 being in the decoupled position (Figure 3C). Illustrated in Figures 4A and 4B are perspective and cross-sectional views, respectively, of an embodiment of a male coupling 400 configured to engage and detachable from a female threaded coupling 402. Together, the male coupling and female threaded coupling 402 they operate as a push-to-connect coupling assembly, which will be discussed in more detail more
ahead. As shown in Figure 4B, the male coupling 400 and the female threaded coupling 402 are in an uncoupled position. In the illustrated embodiment, the female threaded coupling 402 is a female threaded gate, such as a standard female threaded gate. In one embodiment, the standard female threaded gate can be a SAE O-ring shaped protrusion gate. In alternative embodiments, the standard female threaded gate can be ISO, DIN or BSPP O-ring gates. Illustrated in Figure 4C is a cross-sectional view of the male coupling 400 and the female threaded coupling 402 in a coupled position. In the coupled position, the male coupling 400 and the female threaded coupling 402 function as a coupling assembly for transmitting fluids therethrough. Both the male coupling 400 and the female threaded coupling 402 share the same central longitudinal axis A when they are in the engaged position as shown in Figure 4C. In one embodiment, the male coupling 400 and / or the female threaded coupling 402 can be formed of carbon steel. In alternative embodiments, the male coupling 400 and / or the female threaded coupling 402 may be formed from other materials, such as brass, aluminum, stainless steel, and plastic. In the illustrated embodiment, the female threaded coupling 402 includes a receiving portion 404 having a
receiver end 406 and a remote portion (not shown) having a remote end. Extending through the female threaded coupling 402 between the receiving end 406 and the remote end (not shown) is a passage 408 that allows fluid to flow therethrough. In one embodiment (not shown), the remote portion of the female threaded coupling 402 may include external threads for attachment to internal threads of a separate component (not shown) or the female threaded gate may be integrated within an apparatus, such as a pump, manifold, etc. In an alternative embodiment (not shown), the female threaded coupling 402 may include other connection means suitable for attachment to a separate component (not shown). The female threaded coupling 402 also includes a chamfered surface 410 that extends backward and inward from the receiving end 406. A set of internal threads 412 extends rearwardly from the chamfered surface 410. In the illustrated embodiment , the internal threads 412 have a triangular shape profile when viewed in cross section and include nine threads 412a-i. In alternative embodiments (not shown), the internal threads 412 may take the form of other profiles (e.g., trapezoidal, square, or rectangular) when viewed in cross section and include any number of threads. In another alternative embodiment (not shown), the coupling
Female threaded portion 402 may not include chamfered surface 410. In the illustrated embodiment, male coupling 400 includes a body 414 having a collar 416 that separates a front portion 418 having a leading end 420 and a posterior portion (not shown) having a rear end (not shown). Extending through the body 414 from the front end 420 to the rear end (not shown) is a passage 422 that allows fluid to flow therethrough. In one embodiment (not shown), the rear portion of the body 414 can include or connect to a hose nozzle to receive a hose. In alternative embodiments (not shown), the rear portion may be provided with external threads for attachment to the internal threads of another component or may be counter-punched to receive a brass-weldable pipe to the body 414. The front portion 418 of the body 414 includes a first outer cylindrical surface 424 and a second cylindrical outer surface 426 spaced apart from each other by a first outwardly facing annular groove 428 extending radially inward from the first and second outer surfaces 424, 426. The first slit 428 is at least partially defined by a third outer cylindrical surface 430. As shown in Figures 4B and 4C, the first and
second outer surfaces 424, 426 have the same outer diameter that is dimensioned to be received by the internal threads 412 of the female threaded coupling 402. In alternative embodiments (not shown), the first and second outer surfaces 424, 426 may have different diameters as long as the first outer surface 424 has an outer diameter that is dimensioned to be received by the internal threads 412 of the female threaded coupling 402. The male coupling 400 also includes a ratchet locking member for locking the male coupling 400 and the coupling. threaded female 402 together. In the illustrated embodiment, the ratchet locking member is in the form of four separate, ratcheted locking member segments 432 that are positioned within the slit 428 of the body 414 and, together, form the locking member. of ratchet. In alternative embodiments (not shown), the ratchet lock member may include a different number of lock member segments. As shown in Figures 4B and 4C, each segment of locking member 432 includes an outer cylindrical surface 434 and an outer tapered surface 436 that are separated from each other by a retention formation that is configured to interlock with and bond the internal threads 412 of the female threaded coupling 402 when the male coupling 400 is inserted into the female threaded coupling 402, which is
discuss in more detail later. In the illustrated embodiment, the retention formation includes an external partial threaded formation 438. The partial threaded formation 438 projects outwardly from the slit 428 beyond the first outer surface 424 of the body 414. The threaded formation 438 it is characterized as being "partial" due to the fact that the ratchet locking member is comprised of lock member segments 432. Accordingly, the partial threaded formation 438 of each lock member segment 432 comprises only a portion of a Threaded formation. However, it will be appreciated that the locking member segments 432, together, form a threaded formation, although the threads may not be continuous since adjacent locking member segments 432 will have a small space between them. In the illustrated embodiment, the partial threaded formation 438 includes three triangular shaped threads 438a-c when viewed in cross section. However, in alternative embodiments (not shown), the partial threaded formation 438 may include a different number of threads and / or threads may take the form of other figures when viewed in cross section (e.g., square, rectangular, or trapezoidal), as long as they are capable of interlacing with and bonding to the internal threads 412 of the female threaded coupling 402. Additionally, in alternative embodiments (not shown), the retention formation may include a
plurality of discrete projections or discrete protrusions extending radially outwardly that are capable of linking the internal threads 412 of the female threaded gate 402. In these embodiments, the plurality of discrete protrusions or protrusions extending radially outward may take the form of any figure and can be arranged in any pattern, as long as they are able to link the internal threads 412 of the female threaded gate 402. In the illustrated embodiment, each segment of the locking member 432 also includes a front end 442, a rear end 444, and first and second inner surfaces 446, 448. As shown in Figures 4B and 4C, the first and second inner surfaces 446, 448 are oriented at an angle B relative to each other, such that an edge is formed between the first inner surface 446 and second inner surface 448. This edge defines a pivot axis P (extending was of the drawing) around which each segment of locking member 432 pivots. The pivot axis P of each segment of locking member 432 is separated from and oriented perpendicular to the longitudinal axis A. Due to the edge defining the pivot axis P, each lock member segment 432 is capable of pivoting between a first position (i.e., a lock position) and a second position (i.e., a release position). In the locking position, the first inner surface 446 comes up against the third
outer surface 430 of the body as shown in Figures 4B and 4C. In the release position, each segment of locking member 432 is pivoted about axis P in the clockwise direction, such that second inner surface 448 abuts against third outer surface 430 (not shown). It will be appreciated, however, that the release position does not necessarily require that the second inner surface 448 of each segment of locking member 432 abuts against the outer third surface 430. Instead, each segment of locking member 432 needs only to pivot in the clockwise direction a magnitude sufficient to provide clearance between the outer ends of the partial threaded formation 438 of the locking member segments 432 and the inner ends of the internal threads 412 of the female threaded gate 402 Provision adjacent to the front end 442 of each lock member segment 432 is an outwardly facing slit 450 extending radially inward from the outer surface 434. Together, the slits 450 in the lock member segments 432 form a annular groove configured to receive an annular, push resilient element 452. The element or thrust 452, which is wrapped around all of the locking segments 432, is configured to push each segment of locking member 432 radially inward to its locking positions and due to its resilience, is capable of: i)
expanding radially outwardly when the lock member segments 432 move to their release positions; and ii) returning the lock member segments 432 to their lock positions without the need for additional force. In the illustrated embodiment, the push member 452 is a 0-shaped ring. In alternative embodiments (not shown), the push member 460 can be a link spring, a split retainer ring, or a elastomeric or plastic ring. In an alternative embodiment (not shown), the lock member segments 432 can be rotated 180 ° and positioned within the slit 428 such that the retention formation of each lock member segment is located closer to the front end 420 of the male coupling 400. In this embodiment, the pushing member will be provided in slits facing outwardly in the segments of locking members 432 adjacent the rear end of the locking member segments 432. The male coupling 400 also includes a release sleeve 454 provided between the lock member segments 432 and the collar 416. The release sleeve 454 includes a sleeve portion 456 having an inner cylindrical surface 458 and an outer cylindrical surface 460, and a flange portion 462 that extends radially outwardly from sleeve portion 456 and has a surface
outer cylindrical 464. The outer surface 460 of the sleeve portion 456 and the outer surface 464 of the support portion 462 define a support 465 therebetween. At its front end 464, the sleeve portion 456 has a tapered end surface 466 tapering back and toward the longitudinal axis A. In the illustrated embodiment, the release sleeve 454 has a generally L-shaped profile when It is observed in cross section. In alternative embodiments (not shown), the locking sleeve may take the form of other profiles when viewed in cross section. The release sleeve 454 sits on the second outer surface 426 of the body in an axially movable arrangement, such that the release sleeve 454 is movable between backward and forward positions. The axial displacement of the release sleeve 454 is limited in the rearward direction by the collar 416 and in the forward direction by the backward thread 438c of each lock member segment 432. The release sleeve 454 is in its backward position as shown in Figures 4B and 4C. The outer surface 464 of the support portion 462 of the release sleeve 454 includes an outwardly facing annular groove 468 extending radially therefrom. Placed within the second slot 468 is a support ring 470 constructed of a rigid material, such as plastic,
leather, or hard rubber, and an annular seal 472 constructed of a suitable sealing material, such as neoprene or other elastomeric material. The support ring 470 serves to protect the annular seal 472 from damage when the coupling assembly is used in high pressure applications. In another embodiment (not shown), the support ring 470 can be removed when the male coupling 400 is used in low pressure applications. In the illustrated embodiment, the second outer surface 426 of the body includes a second outwardly facing annular groove 474 extending radially inward therefrom. Placed within the second slot 474 are a support ring 476 constructed of a rigid material, such as plastic, skin, or hard rubber, and an annular seal 478 constructed of a suitable sealing material, such as neoprene or other elastomeric material. The annular seal 478 seals the inner surface 458 of the release sleeve 454, thereby preventing dust or other contaminants from entering the area in front of the annular seal 478 and maintaining the fluid pressure within the male coupling 400 and the coupling. female threaded 402. Support ring 476 is dimensioned for reception by inner surface 458 of release sleeve 454 and serves to protect ring seal 478 from damage when male coupling 400 is used in high pressure applications. In an alternative embodiment (not shown), the support ring 476 can
Eliminated when, the male coupling 400 is used in low pressure applications. The male coupling 400 further includes a release sleeve insert 480 disposed about the release sleeve 454 in an axially movable arrangement relative thereto. The release sleeve insert 480 includes a first inner cylindrical surface 482 and a second inner cylindrical surface 484 that are separated from each other by a support 486. The first inner surface 482 of the release sleeve insert 480 is sized to receive the portion of sleeve 456 of the release sleeve 454. As shown in Figures 4B and 4C, the second inner surface 484 has a larger diameter than the first inner surface 482. The second inner surface 484 is dimensioned to receive and attach as a seal the annular seal 472 in the slit 468, thereby preventing dust or other contaminants from entering the area in front of the annular seal 472 and maintaining fluid pressure within the male coupling 400 and the female threaded port 402. The second inner surface 484 is also sized to receiving the support ring 470 in the slit 468. The release sleeve insert 480 further inc The first outer cylindrical surface 488 and a second outer cylindrical surface 490 are separated from each other by a support 492. As shown in FIGS. 4B and 4C, the second
outer surface 490 has a larger diameter than first outer surface 488, while first outer surface 488 has a larger diameter than the second inner surface of release sleeve insert 480. In the illustrated embodiment, a space 494 is provided between the holder 492 of the release sleeve insert 480 and the holder 465 of the release sleeve 454. Placed within the space 494 is a pushing member 496, such as a coil spring, configured to push the release sleeve insert 480 forward. The push member 496 is particularly useful when the male coupling 400 is used in low pressure applications. In an alternative embodiment (not shown), the push member 496 can be removed when the male coupling 400 is used in high pressure applications. In alternative embodiments (not shown), the push member 496 may take the form of an annular elastomeric member (e.g., an O-ring), a cylindrical rubber sleeve, or a wave washer (also known as a spring washer). The male coupling 400 further includes an annular seal 498 disposed around the first outer surface 488 of the release sleeve insert 480. The annular seal 498 may be constructed of neoprene or other suitable sealing material and is configured to be bonded as a seal. chamfered surface 410 of the female threaded coupling 402.
In the illustrated embodiment, the annular seal 498 has a smaller diameter than the annular seal 472. To couple the male coupling 400 with the female threaded coupling 402, the male coupling 400 moves forward (in the direction of the arrow) C) towards the female threaded coupling 402 until the forward plus partial thread 438a of the partial threaded formation 438 of each locking member segment 432 links to the forwardmost thread 412a of the female threaded coupling 402 (FIG. 5A). Upon continuous forward movement of the male coupling 400, the thread 412a of the female threaded coupling 402 interacts with and forces the locking member segments 432 to pivot clockwise (in the direction of arrow D) around of the pivot shaft P against the instance of the pushing member 452, thereby causing the pushing member 452 to expand radially outward (FIG. 5B). The locking member segments 432 pivot clockwise about the pivot axis P until they work like a cam or "ratchet" on the apex of the thread 412a of the female threaded coupling 402. As soon as this occurs , the locking member segments 432 return or "spring back" to their locking position due to the resilience of the thrust element 452, such that the partial thread 438a of the partial threaded formation 438 is interlocked with and interlinks the internal thread 412a female threaded coupling
402 (Figure 5C). Upon further forward movement of the male coupling 400 towards the female threaded coupling 402, the threaded formation 438 of each locking member segment 432 functions as a cam or "ratchet" along the internal threads 412 of the female threaded coupling 402 , by alternating between locking and releasing positions, to progressively interlock with and bond additional internal threads 412 of the female threaded coupling 402 (ie, the engaged position) (Figure 5D). In this position, the engagement of the partial threaded formation 438 of the locking member segments 432 to the internal threads 412 of the female threaded coupling 402 prevents withdrawal of the male coupling 400 from the female threaded coupling 402. In low pressure applications , the annular seal 498 on the first outer surface 488 of the release sleeve insert 480 is forced to seally link the chamfered surface 410 of the female threaded coupling 402 by the pushing force of the pushing member 496 pressing against the support 486 of the release sleeve insert 480. Accordingly, this sealing engagement between the male coupling 400 and the female threaded coupling 402 prevents leakage of fluids therebetween. In high pressure applications, the annular seal 498 on the first outer surface 488 of the release sleeve insert 480 is forced to
bonding the chamfered surface 410 of the female threaded coupling 402 as a seal to pressurization of the male coupling 400 and the female threaded coupling 402. This is due to the pushing force of the pushing member 496 (if present) pressing against the support 486 of the release sleeve insert 480 as well as the force applied to the holder 486 of the release sleeve insert 480 by the pressure imbalance created by the difference in diameters between the annular seal 498 (its outer diameter, either in its neutral state or compressed) and the second inner surface 484 of the release sleeve insert 480 (ie, the outer diameter of the annular seal 498 has a smaller diameter than the second inner surface 484 of the release sleeve insert 480 although this is not shown to scale in Figures 4B and 4C). The sealing engagement between the male coupling 400 and the female threaded coupling 402 also prevents fluid leakage between them. Since the male coupling 400 is capable of being connected to a female threaded coupling, such as a standard female threaded gate, a female adapter can be eliminated by reducing costs as well as a leakage path. Additionally, customers will no longer be required to purchase all of their replacement hoses from the coupling set manufacturer. When you want to uncouple the male coupling 400
of the female threaded coupling 402, the release sleeve 454 moves forward (in the direction of arrow E) against the instance of the pushing member 496 until it engages the tapered surface 466 of each segment of locking member 432 (FIG. 6A). To facilitate movement of the release sleeve 462 from its rearward position to its forward position, a tool can be used for additional leverage between the support portion 462 of the release sleeve 454 and the collar 416 to assist in moving the sleeve release 454 forward against the thrust force of the push member 496. Upon continuous forward movement of the release sleeve 454 from its backward position to its forward position, the release sleeve 454 interacts with and forces the segments of locking member 432 to pivot clockwise (in the direction of arrow F) about pivot axis P against the instance of push member 452, thereby causing push member 452 to expand radially outside. Each segment of locking member 432 pivots clockwise until it reaches its release position (Figure 6B). In this position, each segment of locking member 432 collapses in the slit 428 and provides the necessary clearance to allow the male coupling 400 to slide axially beyond the internal threads 412 of the female threaded coupling.
402. Accordingly, the male coupling 400 can be disconnected from the female threaded coupling 402 resulting in the two components being in the decoupled position (Figure 6C). Illustrated in Figure 7 is a cross-sectional view of another embodiment of a coupling assembly 700 shown in its engaged position. The coupling assembly 700 includes a first member 702 and a second member 704 which, together, operate as a push-type coupling assembly for connection. The first member 702 generally functions as the "female" member of the coupling assembly 700 and the second member 704 generally functions as the "male" member of the coupling assembly 700, such that the first member 702 is configured to receive the second member 704 Both of the first and second members 702, 704 share the same central longitudinal axis A when they are in the engaged position as shown in Fig. 7. In the illustrated embodiment, the first member 702 is a female threaded coupling, such as the female threaded gate which is substantially similar to the first member 12 described above and illustrated in FIGS. 1A and IB. As the first member 12, the first member 702 includes a receiving portion having a receiving end 706 and a remote portion (not shown) having a remote end (not shown). Extending through the first member 702 between the receiving end 706 and the remote end (not shown) is a passage 708
that allows fluid to flow through it. With continued reference to FIG. 7, the first member 702 includes a first chamfered surface 710 extending backward and inward from the receiving end 708. A set of internal threads 712 extends rearwardly from the first chamfered surface. 710 and a first inner cylindrical surface 714 extends rearwardly from the internal threads 712a-i. In the illustrated embodiment, the internal threads 712 have a triangular shaped profile when viewed in cross section and include nine threads 712a-i. In alternative embodiments (not shown), the internal threads 712 may take the form of other profiles (e.g., trapezoidal, square, or rectangular) when viewed in cross section and include any number of threads. In another alternative embodiment (not shown), the first member 702 may not include the chamfered surface 710. In the illustrated embodiment, the second member 704 is similar to the second member 14 described above and illustrated in Figures 1A and IB. Specifically, the second member 704 includes a collar 716 that separates a front portion having a front end 718 from a rear portion (not shown) having a rear end (not shown). Extending through the second member 704 from the front end 718 to the rear end (not
shown) is a passage 720 that allows fluid to flow therethrough. The front portion of the second member 704 includes a first outer cylindrical surface 722 and a second outer cylindrical surface 724 spaced apart from each other by a first outwardly facing annular groove 726 extending radially inward from the first and second outer surfaces 716 , 718. The first slit 726 is at least partially defined by a third outer cylindrical surface 728 and a radially extending concave surface 730 connecting the first and third outer surfaces 722, 728 together. The concave surface 730 forms a rim 732 extending axially towards a portion of the first groove 726. In the illustrated embodiment, the first outer surface 722 of the second member 704 includes a second outwardly facing annular groove 734 extending radially toward in from it. Placed within the second groove 734 are a support ring 736 constructed of a rigid material, such as plastic, skin, or hard rubber, and an annular seal 738 constructed of a suitable sealing material, such as neoprene or other elastomeric material. The annular seal 738 is placed in the second groove 734 between the support ring 736 and the forward end 718 of the second member 704.
The coupling assembly 700 also includes a ratchet locking member configured to lock the first and second members 702, 704 together. In the illustrated embodiment, the ratchet locking member is in the form of spaced, ratcheted locking member segments 740 that are positioned within the first slot 726 and together form the ratchet locking member. In one embodiment, the ratchet lock member includes four lock member segments 740. In alternative embodiments, the ratchet lock member may include a different number of lock member segments. As shown in Figure 7, each segment of locking member 740 includes a first outer surface 742 and a second outer surface 744 that are separated from each other by a retention formation that is configured to intertwine with and bond to internal threads 712 of the first member 702 when the second member 704 is inserted into the first member 702, which is discussed in more detail below. In the illustrated embodiment, the retention formation includes an external partial threaded formation 746 projecting outward from the first groove 726 beyond the first outer surface 722. In the illustrated embodiment, the partial threaded formation 746 includes three triangular figure threads when viewed in cross section. However, in forms
of alternative embodiments (not shown), the partial threaded formation 746 may include a different number of threads and / or the threads may take the form of other figures when viewed in cross section (e.g., square, rectangular, or trapezoidal ), as long as they are capable of interlocking with and linking the internal threads 712 of the first member 702. Additionally, in alternative embodiments (not shown), the retention formation may include a plurality of discrete protrusions or protrusions extending radially outwardly. which are capable of linking the internal threads 712 of the first member 702. In these embodiments, the plurality of discrete protrusions or protrusions extending radially outward can take the form of any figure and can be arranged in any pattern, as long as they are capable of linking the internal threads 712 of the first member 702. Each member segment of lock 740 also includes a curved front end 748, a rear end 750, and first and second converging interior surfaces 752, 754 that form a recess therebetween. The curved front end 748 of each locking member segment 738 sits on the concave surface 730 of the second member 704, allowing each locking segment 740 to pivot relative to the second member 704 between a locking position (as shown in FIG. figure 7) and a release position (not shown).
Arranged between the lock member segments 740 and the third outer surface 728 of the second member 704 is a resilient compressible member 756, such as an O-shaped ring or garter spring. The resilient compressible member 756 is configured to push the locking member segments 740 to their locking positions and is able to: i) compress radially inwardly due to its compressibility when the locking member segments 740 move to their release positions; and ii) return the 740 member members to their lock positions without the need for additional strength due to their resilience. It will be appreciated that the arrangement of the lock member segments 740 and the resilient compressible member 756 described above can be used in the male coupling 400 described above and illustrated in Figures 4A-4C. In an alternative embodiment (not shown), the lock member segments 740 can be rotated 180 ° and placed within the first slot 726 such that the retaining formation of each segment of locking member is located closer to the front end 718 of the second member 704. In this embodiment, the pushing member would be provided in recesses facing outwardly in the locking member segments 740 adjacent the rear end of the locking member segments 740. The coupling assembly 700 It also includes a
release sleeve 758 provided between the lock member segments 740 and the collar 716. The release sleeve 758 includes a sleeve portion 760 and a flange portion 762 extending radially outwardly from the sleeve portion 760. The sleeve portion 760 of the release sleeve 758 overlaps a portion of the first groove 726 and a rear end portion 750 of the locking member segments 740. Accordingly, the locking member segments 740 are retained in the first groove. 726 by the flange 732 of the second member 704 and by the sleeve portion 760 of the release sleeve 758. The release sleeve 758 sits on the second outer surface 724 of the body in an axially movable arrangement, such that it is movable between positions toward back and forward. Axial displacement of the release sleeve 758 is limited in the rearward direction by the collar 716 and in the forward direction by the rearmost partial thread 746 of each segment of the locking member 740. The release sleeve 758 is in its position backward as shown in Figure 7. The coupling operation of the coupling assembly 700 is similar to the coupling operation described above and illustrated in Figures 2A-2D. Additionally, the decoupling operation of the coupling assembly 700 is similar to the decoupling operation described above-
and illustrated in Figures 3A-3C. For all the embodiments discussed above, it will be appreciated that one or more of the cylindrical surfaces discussed above can be replaced with a surface having a linear profile that is angled relative to the longitudinal axis A of the coupling assembly (e.g. tapered surfaces) or a curved surface (e.g., convex or concave surfaces). Additionally, it will be appreciated that one or more of the tapered or beveled surfaces discussed above may be replaced with a cylindrical surface relative to the longitudinal axis A of the coupling assembly (e.g., tapered surfaces) or a curved surface (e.g. convex or concave surfaces). It will be appreciated that the male couplings described above have application in areas other than fluid connectors. For example, a device that includes one of the male couplings described above, particularly the ratchet locking member and release sleeve, can be used as a pressure-type clamping device to connect that is connected to a female thread in a device separated. In this example, the components do not need to transport fluids. To the extent that the term "includes" or "including" is used in the specification or claims, it is intended to be inclusive in a manner similar to the term
"understanding" how that term is interpreted when used as a word of transition in a claim. Moreover, the degree to which the term "or" is used (eg, A or B) is intended to mean "A or B or both". When applicants intend to indicate "only A or B but not both," the term "only A or B but not both" will be used. Accordingly, the use of the term "or" present is inclusive use, and not exclusive use. See, Bryan A. Garner, A Dictionary of Modern Legal Usage 624 (2nd edition 1995). Also, to the extent that the terms "in" or "in" are used in the specification or claims, it is intended that they additionally mean "on" or "in". Moreover, to the extent that the term "connect" is used in the specification or claims, it is intended to mean not only "directly connected to", but also "indirectly connected to" such as connected through another component. or multiple components. Although the present application illustrates various embodiments, and although these embodiments have been described in some detail, it is not the intention of the applicant to restrict or in any way limit the scope of the claimed invention to such detail. Advantages and additional modifications will easily appear to the technicians in the matter. Therefore, the invention, in its broader aspects, is not limited to the specific details and illustrative examples shown and
described. Accordingly, one can leave such details in the spirit or scope of the invention claimed by the applicant. Moreover, the foregoing embodiments are illustrative, and no single feature or element is essential to all possible combinations that may be claimed in this or a subsequent application.
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