MXPA97006584A - Extreme piece of pipe and connect - Google Patents

Abstract

The present invention relates to a connector, which comprises: (a) a body structure of generally cylindrical shape extending along a longitudinal axis from a first end to a second end, and having a hole that is extends longitudinally through said body structure, and between the first and second ends, and which is oriented centrally about the longitudinal axis, the body structure having an external body surface extending longitudinally along, and radially disposed from the longitudinal axis at a first radial distance, and wherein the body structure includes a pair of conical end portions, each thinning the conical end portions from the outer body surface toward a respective end of the first and second ends , and wherein the body structure includes a plurality of flanges that extend longitudinally along, and which are projected to be they project radially outwardly from the outer body surface, in relation to the mentioned longitudinal axis, and each of the flanges is configured in cross-section in the form of an inverted "V", and the consecutive flanges of the plurality of flanges in Inverted V shape, are separated from each other by a V-shaped channel extending longitudinally along the aforementioned body structure, and (b) a pair of structures of the tube structures a conduit extending through them, and having a proximal end, each of the tube structures being connected to a respective end of the first and second ends of the body structure at the proximal end, whereby the duct is oriented centrally around the longitudinal axis, in such a way that said conduits and the orifices form a continuous passage between the distal ends of the pair of tube structures and through the pair of structures. tube and body structure, each of the tube structures having an outer tube surface extending longitudinally along, and radially from, the axis longitudinally along, and radially from, the longitudinal axis , at a second radial distance, the first radial distance being greater than the second distance raid

Description

EXTREME PIECE OF PIPE AND CONNECTOR FIELD OF THE INVENTION The present invention relates to a pipe end part to be used to connect the pipe to each other. More particularly, the present invention relates to a pipe end piece body adapted to terminate the end of a pipe, such that it can be connected with pipe connectors. In turn, the connected pipe, the end piece and the pipe connector will provide a fluid-proof communication for the flow of fluid therethrough. BACKGROUND OF THE INVENTION Although numerous ways are employed to connect the pipe to each other, or to connect the pipe to connections of appliances and the like, the present is to provide the pipe with an elastomeric end piece. More typically, the end piece is adhesively fixed to one of the free ends of the pipe. Pipe made of a rigid and yet flexible material, such as polyvinyl chloride plastic, is widely used in the health care industry. This tubing is used to transport oxygen from a portable oxygen source to ambulatory patients suffering from respiratory diseases, or to transport intravenous solutions from the containers and into patients for different medical reasons. End pieces and pipe connectors of the prior art are suitable for connecting two pieces of pipe together in a fluid proof connection. Unfortunately, with outpatients, these pipe end pieces can become trapped with furniture, under doors, or in other places when a patient moves from one place to another. When this occurs, the outpatient could make one of the free ends of the tubing disengage from any device with which the tubing may be previously connected, or that is caught and causes discomfort to the patient. Typically, the prior art pipe end pieces were made of a rigid and yet elastic material, and included a body member having a cylindrically elongated body portion, and a cylindrically shaped head portion with a diameter larger than the body portion. These cylindrically shaped portions of the end piece of the pipe, contributed to the problem of getting caught in the furniture, under the doors or in other articles. A cylindrically shaped orifice extends longitudinally through both the body portion and the head portion. The head portion is used to help force the pipe connector to a coupling with a connection. Although it is useful to twist the end piece of the prior art pipe while being forced to engage with the connection, securing the pipe connector to obtain sufficient twisting force can cause the body portion to collapse. Accordingly, the twisting of a pipe end piece of the prior art may have to be done carefully when it comes to coupling a connection, because the connection is cylindrical, while the collapsed body portion may deform the cylindrically shaped hole. up to an oval shape. Accordingly, there is a need to provide * a pipe end piece that is configured in a manner that avoids getting caught with the furniture, under the doors, or with other items while being moved by the patient. There is another need to provide an improved pipe end piece, such that it is can twist while connecting to a connection. In the same way, there is a need for a rigid pipe connector to releasably connect two pipe end pieces together in a fluid-proof relationship. OBJECTS OF THE INVENTION The object of the present invention is to provide a new and useful pipe end part., and a combination of combined end piece and connector that is configured in a manner that reduces the possibility of getting caught with furniture, under doors or in other items. It is another object of the present invention to provide a pipe end piece and an end piece connector, wherein the end piece is sufficiently rigid, and configured in such a way that when the end piece of the pipe over a relatively rigid pipe connector or a connection, the hole in the end piece resists substantial deformation. It is still another object of the present invention to provide "a pipe connector that improves the holding characteristics, such that the pipe end piece can be easily clamped when it is twisted on or off a free end of the pipe connector or It is a further object of the present invention to provide a pipe end piece and a connector, which is effective to use, and simple and inexpensive to manufacture.These and other objects of the present invention will become more readily appreciated. and understood from a consideration of the following detailed description of the exemplary embodiments of the present invention, when taken in conjunction with the accompanying drawings: SUMMARY OF THE INVENTION In accordance with the foregoing, the pipe end piece is described and the connector of the present invention, which is adapted to interconnect a first free end of a first piece of pipe, and a second free end of a second piece of pipe, such that a fluid can flow through the first and second pieces of the pipe when interconnected by the use of plural end pieces and a connector. The pipe end piece of the present invention includes a body member extending along a longitudinal axis, a hole extending longitudinally therethrough. The body member includes an elongated body portion, a donut-shaped head portion, and a trunco-conical tail portion. The body portion has an outer body surface configured in a shape of a trunk that is thinned from a first end and towards a second end. The donut-shaped head portion is connected to the first end of the body portion, and extends radially outwardly relative to the longitudinal axis, to form, in cross-section, an external curved surface starting from the first end. , and that ends in an external peripheral border that defines a first opening towards the hole. The first opening is dimensioned and adapted to slidably receive in a removable manner and retain the pipe connector described herein, and the second opening is dimensioned to permanently receive the free end of a piece of pipe in an intimate fitting relationship. A trunco-conical tail portion connects to the second end of the body portion, and thins from the second end and toward a second opening inward of the hole. The second opening is dimensioned and adapted to slidably receive and retain in an intimate fitting relationship, a free end of a piece of pipe or a pipe connection or a pipe connector, all of which will be referred to hereinbelow as pipe . The body member includes a first internal surface and a second internal surface defining the hole. The first inner surface is centrally disposed about the longitudinal axis, and forms a first trunco-conical-shaped orifice region converging inwardly from the first opening and through the head portion. The second inner surface is centrally disposed about the longitudinal axis, and forms a second truncoconical orifice region converging inwardly from the second opening and through the tail portion and the body portion. A flange element is connected with, and extends circumferentially around the second inner surface, and is disposed substantially midway between the first and second openings. A plurality of grooves are spaced from each other, and extend longitudinally along the outer body surface of the body portion. Each of the ridges is connected to the outer body surface of the body portion, and to the curved surface of the head portion. The body member is made of a unitary construction and from a rigid and yet elastic material. The rigid and yet elastic material is selected from the group consisting of rubber and plastic. It is preferred that the rigid and yet elastic material be transparent or translucent. The most preferred material for the pipe end piece of the present invention is a polyvinyl chloride (PVC) polymer, using a molding material that complies with the FDA, although equivalent materials can be used that approximate the following properties physical or equivalent.

Property Value ASTM Test Method Specific Gravity 1.18 (+0.03) D - 792 Hardness 65 + 3 D - 2240. { Shore A Durometer) > 15 sec Tensile strength 112 kg / cm2 D - 412 Blongation 400% D - 412 Module at 100 * 575 D - 792 Also, a connector is described which is used in combination with a pair of pipe end pieces described herein, each end piece being connected with a respective free end of a piece of pipe. The connector is adapted to interconnect or couple the pair of pipe end pieces, so that the fluid can flow between and through the respective parts of the pipe. The connector for coupling the end pieces includes a body structure and a pair of tube structures. The body structure extends along a longitudinal axis from a first end to a second end, and has a hole extending longitudinally therethrough, and between the first and second ends. The hole is oriented centrally around the longitudinal axis. The body structure also has an outer body surface extending longitudinally along and radially disposed from the longitudinal axis at a first radial distance. Each of the tube structures defines a conduit extending therethrough, and has a distal end and a proximal end. Each of the tube structures is connected to a respective one of the first and second ends of the body structure at the proximal end, in a manner where the conduit is oriented centrally about the longitudinal axis. The conduits and the orifice form a continuous passage between the distal ends of the pair of tube structures, and through the pair of tube structures and the body structure. Each of the tube structures has an outer tube surface extending longitudinally along, and radially from, the longitudinal axis, at a second radial distance. The first radial distance is greater than the second radial distance. The body structure is generally cylindrical in shape, and includes a pair of conical end portions. Each of the conical end portions tapers from the outer body surface to a respective one of the first and second ends. The outer body surface also includes a plurality of flanges extending longitudinally therealong, and projecting radially outwardly therefrom. Each of the ridges is configured in a cross-sectional shape of an inverted "V", and the plurality of consecutive inverted V-shaped flanges are separated from each other by a V-shaped channel extending longitudinally along of the external body surface. Preferably, the body structure and the pair of tube structures are of a unitary construction. It is also preferred that the body structure, as well as the pair of the tube structures, be made of a more rigid material than the end pieces. Each of the tube structures includes a plurality of collars that connect to, and extend circumferentially about, and radially outwardly from, the outer tube surface. The plurality of collars are separated from each other to define an annular shaped channel disposed between the consecutive collars. Preferably, the material of the body structure is selected to be sufficiently rigid, such that the collars press the indentations inward of the inner annular surface of the body portion of the pipe end piece to provide a connection of seal firm fluid test, but releasable. Each of the tube structures also includes a trunco-conical head member that is disposed on, and extends circumferentially around, the outer tube surface. The head member begins at the distal end, and diverges outward, towards the body structure. BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a perspective view of a preferred embodiment of a pipe end piece of the present invention. Figure 2 is a cross-sectional elevation view of the pipe end piece of the present invention, shown in Figure 1. Figure 3 is a cross-sectional elevation view of the pipe end part of the present invention. invention, taken along line 3-3 shown in Figure 2. Figure 4 is a front elevation view of a head portion of the pipe connector of the present invention. Figure 5 is a perspective view of a first exemplary embodiment of a connector in accordance with the present invention. Figure 6 is a side elevation view of the first exemplary embodiment of the connector of the present invention, shown in Figure 5, with a pair of pipe end pieces, and a pair of free pipe ends, each being disconnected from the other. "Figure 7 is a front view and a rear elevation view of the first example embodiment of the connector of the present invention, shown in Figure 5. Figure 8 is a cross-sectional side view of the first example embodiment of the connector of the present invention, taken along line 8-8 of Figure 7, and illustrated by interconnecting the pair of pipe end pieces, drawn in phantom, connected to the respective free ends of the pipe, also drawn in ghost of Figure 6. Figure 9 is a perspective view of a second exemplary embodiment of the connector of the present invention.Figure 10 is a side elevational view of the second example embodiment of the connector of the present invention shown in Figure 9, with a pair of pipe end pieces and a pair of free pipe ends, each being disconnected from the other. Figure 11 is a front view and a rear elevation view of the second example embodiment of the connector of the present invention, shown in Figure 9. Figure 12 is a cross-sectional side view of the second example embodiment of the connector of the present invention, taken along line 12-12 of Figure 11, and illustrated by interconnecting the pair of pipe end pieces, drawn in phantom, connected to the respective free ends of the pipe, also drawn in ghost of Figure 10. Figure 13 is a perspective view separated in parts of a third example embodiment of the connector of the present invention, showing a first piece of body member and a second piece of body member, which are connected in a releasable and rotating way with each other. Figure 14 is a cross-sectional side view of the third exemplary embodiment of the connector of the present invention, illustrating the interconnection between the first and second body member parts, with a seal member disposed therebetween.

Figure 15 is a cross-sectional side view, taken along line 15-15 of Figure 14. Figure 16 is a cross-sectional side view, taken along line 16-16 of the Figure 14. Figure 17 is a cross-sectional side view of the third example embodiment of the connector, showing an alternative element for releasably connecting the first and second body member parts together. Figure 18 is a partial side view amplified in cross section, illustrating a seal member disposed between a tube rod of the first body member member, and a tube tube orifice formed inwardly of the second member member of body. Figure 19 is a perspective view of a fourth exemplary embodiment of the connector of the present invention, and a splitter adapter for releasably connecting thereto. DETAILED DESCRIPTION OF THE MODALITIES A pipe end piece of the present invention is adapted to interconnect and provide a fluid-proof connection between two pieces of pipe, or a piece of pipe and a connector or a pipe connection, in such a manner that a fluid can flow through the pieces of the interconnected pipe, or into a connection. It can be appreciated that the pipeline described herein can be made of materials that produce a rigid and yet flexible pipe, such as transparent or translucent pipe used in health care applications, or rigid tubing made of metal. The pipe may also be of pipe end portions projecting from connection assemblies, such as valves operably connected to tanks or to other equipment. In addition, rigid and yet flexible tubing, or rigid tubing, could be forcefully adjusted in a removable manner in the tubing connector of the present invention, or could be permanently attached to the tubing end pieces described herein. A common configuration is found in the health care industry, where an outpatient pulls or carries an oxygen concentrator or a gas or liquefied gas supply tank. Here, the first free end of a piece of pipe made of a rigid and yet elastic material is permanently fixed to one end of the pipe canector by an adhesive, and a second piece of pipe made of metal is removably connected. , which is projected from a valve connection assembly into the oxygen concentrator, to the end piece of pipe at an opposite end. This configuration provides the patient with a simple and easy removal or connection of the tubing connector from the oxygen concentrator whenever desired, which is commonly referred to in the industry as a "quick disconnect". A pipe end part 10 of the present invention is generally introduced in Figures 4. In Figure 1, the pipe end part 10 receives the free end 12 of a piece of pipe 14. The pipe connector 10 includes a body member 20 extending along a longitudinal axis "A", with a hole 22 extending longitudinally therethrough. The body member 20 includes an elongate body portion 24 having an outer body surface 26 configured in a shape of a trunk that is thinned from a first end 28 and toward a second end 30. A head portion is attached in a shape of donut 32 with the first end 28 of the body portion 24, and extending radially outwardly relative to the longitudinal axis "A" to form, in cross section, an external curved surface 34 starting from the first end 28, and ending at an outer peripheral edge 36. The outer peripheral edge 36 defines a first opening 38 inwardly of the orifice 22. The first opening 38 is dimensioned and adapted to slidably receive and retain a free end 12 of the piece of pipe 14 in a relationship of intimate adjustment. The first opening 38 must be dimensioned and adapted to slidably receive and retain a tubular end of the connector shown in Figures 5, 6 and 10. A trunco-conical tail portion 40 (Figure 2) is connected to the second end portion 30 of the portion. of body 24, and is thinned from the second end 30 and towards a second opening 42 into the orifice 22. The second opening 42 is dimensioned and adapted to slidably receive and permanently retain a free end 16 of the work piece. pipe 18 in an intimate fit relationship. The body member 20 includes a first internal surface 44 and a second internal surface 46 that define the orifice 22. The first internal surface 44 is centrally disposed about the longitudinal axis "A", and forms a first trunco-conical orifice region 48. , which converges "inwardly from the first opening 38 and through the head portion 32. The second internal surface 46 is centrally disposed about the longitudinal axis" A ", and forms a second trunco-conical orifice region 50, which converges inward from the second opening 42 and through the tail portion 40 and the body portion 24. The pipe end part 10 also includes a flange element 52 which connects to, and extends circumferentially around, the second internal surface 46. The rim element 52 is disposed substantially midway between the first and second apertures 38 and 42, respectively. The flange 52 acts as a stop to prevent the free end of the pipe from advancing further when inserted into the hole. The pipe end piece 10 further includes a plurality of grooves 54, which are spaced apart from one another, and which extend longitudinally along the outer body surface 26 of the body portion 24. Each of the grooves 54 it is connected to the external body surface 26 of the body portion 24, and to the external curved surface 34 of the head portion 32. The splines 54 add rigidity to the pipe connector 10, and also provide additional frictional characteristics, thus enabling twisting the pipe connector 10 when it engages with a free end of the pipe. Although not by way of limitation, it is preferred that the body member 20 be fabricated from a unitary construction. Again, without being a limitation, the flexible body member 20 is made of a rigid and yet elastic material, selected from the group consisting of different rubber or plastic compositions. Furthermore, it is preferred that the rigid and yet elastic material be transparent or translucent. Having fabricated a pipe end piece from a transparent or translucent material, it is possible for a user to visually determine that, when the free ends of the pipe are coupled with the pipe end part 10, the ends are properly inserted. free in the hole and abutting the flange element. Both the body portion and the tail portion of the pipe end piece of the present invention are configured to be thinned. The head portion of the pipe end piece has a donut-shaped configuration. These configurations of the pipe end piece make it possible to avoid getting caught with the furniture, under the doors, and in other items. With the flutes, the pipe end piece is sufficiently rigid so that, when the pipe end piece is forced onto a connector or a pipe connection, the hole will resist deformation. * Accordingly, the pipe end part of the present invention is easier to install over the free end of a pipe connection or a valve connection. In addition, the pipe end part of the present invention has better fastening characteristics, due to the grooves. Now, the pipe connector can be held more easily, so that it can be twisted on or off a free end of a pipe connector. Finally, the skilled person would appreciate that the pipe end part of the present invention is effective to be used, and simple and inexpensive to manufacture. In Figures 5 to 8 a first example embodiment of the connector 210 of the present invention is generally introduced. The connector 210 is used in combination with a pair of pipe end pieces 10, such as those described hereinabove, or some other type of pipe end pieces of a similar construction. By way of example only, the description of the exemplary embodiments of the connector 210 will be explained by incorporating the pipe end part 10 of the present invention, as described heretofore. Each end piece of pipe 10 is connected to the free end 16 of the pipe 18, and has a first opening 38 towards the hole 22, where the fluid (shown as the arrows in Figure 8) can flow through the pipe. pipe end part 10 and a respective connector or pipe 18. The connector 210 is adapted to interconnect the pair of pipe end pieces 10, so that fluid can flow between and through the respective pipe pieces 14 and 18 (see Figure 6). The connector 210 includes a body structure 212 and a pair of tube structures 214. The body structure 212 extends along a longitudinal axis "A" from a first end 216 to a second end 218. As shown better in Figure 8, the body structure 211 has a hole 220 extending longitudinally therethrough, and between the first end 216 and the second end 218. The hole 220 is centrally oriented about the longitudinal axis "A" " As best shown in Figures 5 to 7, the body structure 212 has an outer body surface 222 that extends longitudinally along, and is disposed radially from the longitudinal axis "A" at a first radial distance ". R ^ 'As best shown in Figure 8, each of the tube structures 214 defines a conduit 224 extending therethrough, and each of the tube structures 214 has a distal end 226 and proximal end 228. Each of the tube structures 214 is connected to a respective one of the first and second ends 216 and 218 of the body structure 212 at the proximal end 228. When connected, each conduit 224 is oriented centrally about the longitudinal axis "A" ", such that the conduits 224 and the orifice 220 form a continuous passage 230 between the distal ends 226 of the pair of tube structures 214, and through the pair of tube structures 214 and body structure 212. Each of the tube structures 214 has an outer tube surface 232 that extends longitudinally along, and radially from, the longitudinal axis "A" at a second distance. radial "R2", as best shown in Figure 8. To facilitate connection or disconnection of connector 210 to the pair of pipe end pieces 10, the first radial distance "R 'is greater than the second radial distance" R2", at least by a factor of 1.5, that is, 1.5 times" R2. "The body structure 212 is of a generally cylindrical shape both the body structure 212 and the pair of tube structures 214 are preferably manufactured from a construction n unit. Also, the body structure 212 and the pair of tube structures 214 are preferably made of a rigid material, such as plastic, fiberglass, wood or metal. The body structure 212 includes a pair of conical end portions 234. Each of the conical end portions 234 is thickened from the outer body surface 222 to a respective one of the first and second ends 216 and 218. The body structure 212 includes a plurality of flanges 236 extending longitudinally along, and projecting radially outward from, the outer body surface 222, relative to the longitudinal axis "A". Each of the rims 236 is formed in cross-section in an inverted "V" shape, as best shown in Figure 7. Each of the tube structures 214 includes a plurality of collars 238 that are connected with, and extend circumferentially around, and radially outwardly from, the outer tube surface 232. The plurality of collars 238 are spaced apart from one another to define an annular shaped channel 240, as best shown in FIG. 5, which is shown in FIG. disposed between the consecutive collars 238. Each of the tube structures 214 also includes a trunco-conical shaped head member 242, which is disposed on, and extends circumferentially around, the outer tube surface 232. The head member 242 begins at distal end 226, and diverges outward, toward body structure 212. It should be appreciated that each of the pair of tube structures 214 is operative to be inserted in a removable manner. through the first opening 38, and into the hole 22 of one of the respective pipe end parts 10, such that the connector 210 engages both with the pipe connectors 10 in an intimate fitting relationship ( as shown in Figure 8), thus making it possible for the fluid to flow between and through the respective parts of the pipe 14 and 18, as well as having a smooth, almost continuous external surface that resists clogging in use. In Figures 9 to 12 a second exemplary embodiment of a connector 310 of the present invention is generally introduced. The features and benefits of this second embodiment of the connector 310 are substantially similar to those of the first example embodiment. The only difference lies in a configuration of a plurality of flanges 338. The connector 310 includes a body structure 312 and a pair of tube structures 314. The external body surface 322 is represented by a plurality of lines, as shown in FIG. Figures 9 to 11. Each of the flanges 338 is formed in cross section in an inverted "V" shape, as best shown in Figure 11, and the plurality of consecutive inverted V-shaped flanges 338 are separated. from each other through a V-shaped channel 339, which extends longitudinally along the body structure 312. In Figures 13 to 16 a third example embodiment of a connector 410 is introduced. The connector 410 is similar to the connectors described hereinabove, with the exception of that the body structure includes a first piece of body member 446 and a second piece of body member 448. The first piece of body member 446 and the second piece of body member 448 are releasably interconnected with each other. the other, and operate to rotate around the longitudinal axis "A", one in relation to the other. One of the first and second body member parts 446 and 448 includes a longitudinally extending tube rod 450, and projecting outwardly therefrom in a direction opposite to a respective tube structure 214, as best shown in Figure 13. The tube rod 450 has a tube rod conduit 452 extending therethrough, and centrally disposed about the longitudinal axis "A". One of the first and second remaining body member pieces 446 and 448 includes a tube stem orifice 454 that is formed longitudinally therein, along the longitudinal axis "A", and is dimensioned and adapted to receive in a slidable and rotatable manner to the pipe rod 450. The pipe rod hole 454 extends partially through the remainder of the first and second body members 446 and 448, and is centrally disposed about the longitudinal axis "A". . By way of example only for the third embodiment of the connector 410, the first piece of body member 446 has been selected to include the tube stem 450, and the second body member part 448 has been selected to include the rod hole. of tube 454, although one skilled in the art would appreciate that the second body member part 448 could have been selected to include the tube stem 450, while the first body member part 446 would then include the 454 tube stem hole. .is best shown in Figures 13 and 14, the tube rod 450 has a proximal cylindrical end portion 456, an intermediate conical portion 458, and a distal trunco-conical nose portion 460. The tube rod orifice 454 is an orifice stepped downwardly accommodating the rod of the tube 450, to slide and rotate therein in an intimate fit relationship. The tube rod includes a slot 462 extending circumferentially around the proximal cylindrical end portion 456. As shown in Figures 13, 15 and 16, the second member of body member 448, ie, the remaining body member first and second body member parts 446 and 448, includes a cavity 464 that extends transversely to the longitudinal axis "A" ", and from the external body surface 222 and in communication with the stem orifice of the tube 454. The connector 410 of the third example embodiment of the present invention includes a fastener 466 that is dimensioned and adapted to be slidably received by the cavity 464 in an intimate fit relationship, as shown in Figure 16. The fastener 466 operates as a whole with the cavity 464 for engaging a portion of the slot 462 (Figures 14 and 16), such that the first and second body members 446 and 448 are rotatably interconnected with one another. The fastener 466 has a pair of arms 468, which are arranged parallel to one another, and are connected together in a manner to form a U-shaped fastener. In Figures 14 and 16 each of the arms 468, dimensioned and adapted to engage with a portion of the slot 462 when the fastener 466 is slidably received by the cavity 464. As shown in Figure 17, the first member of the body member 446 and the second member of body 448 are rotatably connected to each other in an alternative manner. The cavity 464 includes a pair of fastener holes 472 that are arranged parallel to each other, and transverse to, and on opposite sides of, the longitudinal axis "A". The fastener 466 includes a pair of bolts 474, which are dimensioned and adapted to engage with the respective fastener holes 272 in a tongue relationship. With reference to Figures 13 and 14, the connector 410 of the third example embodiment of the present invention also includes an annular seal member 470. The seal member 470 is sized and adapted to be positioned centrally within the hole of tube stem 454, such that it surrounds the longitudinal axis "A" ", while being in contact with the distal truncoconical nose portion 460 of the tube stem 450, when the tube stem 450 is rotatably received in the hole pipe rod 454. The seal member 456 is a common ring-0 made of an elastic material, such as rubber or any other conventional type of material commonly used for sealing purposes of this type. In Figure 18, the intermediate conical portion of the tube stem 450, and the distal truncoconical nose portion 460 of the tube stem 450 are joined together by a collar portion 476. In cross section, the collar portion 476 is formed with a radius "r", and is offset from an external conical surface 478 by a distance "d". Note that the seal member 470 is nested in an annular opening 480, and is in contact with an outer truncoconical surface 482 of the distal truncoconical nose portion 460, and the inner peripheral wall 484 and an internal radial wall 486 which, in part, , defines the orifice of the pipe rod 454. Another truncoconical surface 482 is thinned at an angle "a" relative to the longitudinal axis "A" ", which is preferably 20 degrees. As a result of the nesting, the seal member 470 provides for an adequate seal of the fluid flowing through the continuous passage 230, provided that the fluid flows under a relatively low pressure indicated by the pressure "P". Under a higher pressure, indicated by "P", the seal member 470 tends to be displaced away from the inner radial wall 486. However, simultaneously, the seal member 470 becomes more and more wedged between the wall inner peripheral 484 and outer truncoconical surface 482 of distal truncoconical nose portion 460, as illustrated in phantom. As a result of wedging, with a higher fluid pressure, the sealing characteristics of seal member 470 also increase. One skilled person would appreciate that this feature can only operate within a reasonable zone of high pressures, and that excessive pressures are possibly they can result in a catastrophic failure of the connector of the invention itself.

Figure 19 shows a fourth exemplary embodiment of a connector 510 of the present invention, of a type wherein the first piece of the body member 446, and the second piece of body member 448 can rotate relative to one another. One of the tube structures 214 has a straight end 512 that is dimensioned and adapted to receive a splitter adapter 514. The splitter adapter 514 includes a head member 516 and a pair of tube members 518. The head member 516 has a head duct 520 formed therein, extending longitudinally and centrally about the longitudinal axis "A" ", and dimensioned and adapted to slidably receive the straight end portion 512 in" a dockable relationship. one of the pair of tube members 518 has a pipe conduit 522 that is melted in the head conduit 520, such that the fluid flowing from the connector 510 and into the splitting adapter 514 can be divided into two fluids that they flow apart, and conversely, two separate flowing fluids, which flow from each pipeline 522, melt into a fluid flowing in the head member 516. The pipe end piece and the combination of the pipe The end of pipe and connector provide numerous advantages and benefits. The pipe end piece and the combination end piece and connector are configured in a manner that reduces the possibility of getting caught with the furniture, under the doors or in other articles. The pipe end piece and the pipe piece connector have ends that are sufficiently rigid, and are configured in such a way that, when the pipe end piece is forced onto a relatively stiff connector or pipe connection, the orifice of the end piece resists a substantial deformation. The pipe end piece, as well as the connector, have better fastening characteristics, so that each can be easily clamped when one is twisted on or from the other, or some other connection. Both the pipe end piece and the connector are effective for use, and simple and inexpensive to manufacture. In accordance with the foregoing, the present invention has been described with some degree of particularity, directed towards the exemplary embodiments of the present invention. However, it should be appreciated that the present invention is defined by the following claims, interpreted in the light of the prior art, in such a way that modifications of changes to the exemplary embodiments of the present invention can be made without departing from the concepts inventives contained in this.

Claims (34)

1. NOVELTY OF THE INVENTION Having described the foregoing invention, it is considered as a novelty and, therefore, the content of the following is claimed as property: CLAIMS 1. An end piece of pipe adapted to interconnect a first free end of a first piece of pipe, and a second free end of a second piece of pipe, such that a fluid can flow through the first and second pieces of interconnected pipe, which comprises: a body member extending as far as possible. along a longitudinal axis, with a hole extending longitudinally therethrough, the body member including an elongate body portion having an external body surface configured in a shape of a trunk that is thinned from a first end and to a second end, and a donut-shaped head portion connected to the first end of the body portion, and extending radially outwardly in relation to the body portion. With the longitudinal axis, to form, in cross section, an external curved surface starting from the first end and ending in an outer peripheral edge defining a first opening inward of said hole, dimensioning and adapting the first opening to receive slidably and retaining the first free end of the first piece of pipe, and the second free end of the second piece of pipe, in an intimate fit relationship, and a trunco-conical tail portion connected to the second end of the body portion , and which thins from the second end and towards a second opening into the orifice, the second opening being dimensioned and adapted to slidably receive and permanently retain a first remaining end of the first piece of pipe. A pipe end piece according to claim 1, characterized in that the body member includes a first internal surface and a second "internal surface" defining said hole, the first internal surface being disposed centrally around said axis longitudinal, and forming a first truncoconical orifice region converging inwardly from the first opening and through the head portion, the second inner surface being centrally disposed about said longitudinal axis, and forming a second trunco-conical orifice region which converges inwardly from the second opening and through the tail portion and body portion mentioned 3. A pipe end part according to claim 2, characterized in that it includes a flange element connected with , and that extends circumferentially around, the second to inner surface, and disposed substantially midway between the first and second openings. 4. A pipe end piece according to claim 1, characterized in that it includes a plurality of grooves spaced apart from one another, and extending longitudinally along the outer body surface of the body portion, each of the grooves being connected to the external body surface of the body portion and the curved surface of the above-mentioned head portion. 5. A pipe end piece according to claim 1, characterized in that the body member is made of a unitary construction. 6. A pipe end piece according to claim 1, characterized in that the body member is made of a rigid and yet elastic material. 7. A pipe end piece according to claim 6, characterized in that the rigid and yet elastic material is selected from the group consisting of rubber and plastic. 8. A pipe end piece according to claim 6, characterized in that the rigid and yet elastic material is transparent. 9. A pipe end piece, comprising: a body member extending along a longitudinal axis, a hole extending longitudinally therethrough, this body member including an elongated body portion, a head portion in the form of a donut, a portion of tail of truncoconical shape, a first internal surface and a second internal surface, this body portion having an external body surface configured in a shape of a trunk that is thinned from a first end and towards a second end, the donut-shaped head portion connecting with the first end of the body portion, and extending radially outwardly "in relation to the longitudinal axis, to form, in cross-section, an external curved surface starting from the first end, and ending in an outer peripheral edge that defines a first opening in the hole, connecting the portion truncoconically shaped tail with the second end of the body portion, and thinning from said second end and towards a second opening into the hole, the first internal surface being centrally disposed about the longitudinal axis, and forming a first region of truncoconical shaped orifice converging inwardly from the first opening and through the head portion, and the second internal surface being centrally disposed about the longitudinal axis, and forming a second truncoconical orifice region converging inwardly from the second opening and through the aforementioned portion of tail and body portion. 10. A pipe end piece as claimed in claim 9, characterized in that it includes a plurality of grooves spaced apart from one another, and circumferentially around the body member, and extending longitudinally along the surface of the body member. external body of the body portion, and connected with an external body surface of the body portion and the curved surface of the aforementioned head portion. 11. "A pipe end piece as claimed in claim 10, characterized in that it includes a flange element connected to, and extending circumferentially around, the second inner surface, and disposed substantially midway between the first and second openings 12. A connector, which comprises: (a) a body structure extending along a longitudinal axis from a first end to a second end, and having a hole extending longitudinally through said body structure, and between the first and second ends, and which is oriented centrally about the longitudinal axis, the body structure having an external body surface extending longitudinally along, and radially disposed from the longitudinal axis at a first radial distance, and (b) a pair of tube structures, each of the tube structures defining a conduit that is extends therethrough, and having a distal end and a proximal end, each of the tube structures being connected to a respective one of the first and second ends of the body structure at the proximal end, whereby the The conduit is oriented centrally around the longitudinal axis, such that said conduits and said orifice form a continuous passage between the distal ends of the pair of tube structures and through the pair of tube structures and the body structure, having each of the tube structures an outer tube surface extending longitudinally along, and radially from, the longitudinal axis, at a second radial distance, the first radial distance being greater than the second radial distance mentioned. 13. A connector in accordance with that claimed in claim 12, characterized in that the body structure has a generally cylindrical shape. A connector in accordance with claim 13, characterized in that the body structure includes a pair of conical end portions, each of the tapered end portions tapering from the outer body surface toward a respective end of the body. first and second ends. 15. A connector according to claim 13, characterized in that the body structure includes a plurality of flanges extending longitudinally along, and projecting radially outward from, the outer body surface, in relationship with the mentioned longitudinal axis. 16. A connector according to claim 15, characterized in that each of the flanges is configured in cross section in a shape of an inverted "V". 17. <- A connector according to claim 16, characterized in that the consecutive flanges of the plurality of inverted V-shaped rims are separated from each other by a V-shaped channel extending longitudinally along the the body structure mentioned. 18. A connector according to claim 12, characterized in that the body structure and the pair of tube structures are of a unitary construction. 19. A connector according to claim 12, characterized in that the body structure and the pair of tube structures are made of a rigid material. A connector in accordance with claim 12, characterized in that each of the tube structures includes a plurality of collars connected to, and extending circumferentially about, and radially outwardly from, the outer tube surface. , the plurality of collars being separated from one another to define an annular shaped channel disposed between the consecutive collars. 21. A connector in accordance with claim 12, characterized in that each of the tube structures includes a trunco-conical-shaped head member disposed on and extending circumferentially around the outer tube surface. - the head member at said distal end, and diverging outwards, towards the aforementioned body structure. 22. A connector according to claim 12, characterized in that the body structure includes a first piece of body member and a second piece of body member interconnected in a releasable manner with each other, the former being second body member parts operative to rotate about the longitudinal axis one relative to the other. A connector according to claim 22, characterized in that one of the first and second pieces of the body member includes a longitudinally extending tube rod, projecting outward therefrom, in one direction. opposite to one of the respective tube structures, this tube rod having a tube rod conduit extending therethrough, and centrally disposed about the longitudinal axis, and wherein a remaining one of the first and second member pieces. The body includes a tube shank orifice sized and adapted to receive in a slidable and rotatable manner the tube shank, the tube shank orifice extending partially through the remaining piece of the first and second body member parts, and centrally disposed about the mentioned longitudinal axis. 24. A connector according to claim 23, characterized in that it includes an annular seal element dimensioned and adapted to be placed centrally inside the bore of the rod of the tube, in a manner that surrounds the longitudinal axis, and in contact with the rod of the tube when said rod of tube is rotatably received in the hole of the rod of the tube. 25. A connector in accordance with claim 24, characterized in that the seal element is a ring-0 made of an elastic material. 26. A connector according to claim 23, characterized in that the rod of the tube includes a groove extending circumferentially around it, and wherein the remaining part of the first and second body member parts includes a cavity that is extends transversely to the longitudinal axis from the external body surface, and in communication with the tube stem orifice, and which includes a fastener dimensioned and adapted to be slidably received by said cavity in an intimate fit relationship, and operating to engage with a portion of the slot, such that the first and second body member parts are rotatably interconnected with each other. 27. A connector according to claim 26, characterized in that the fastener includes a pair of arms arranged parallel to each other, and connected to each other to form a U-shaped fastening member, dimensioning and adapting each of the arms to engage with a portion of the slot, when the clamping member is slidably received by said cavity. A connector in accordance with claim 26, characterized in that the cavity includes a pair of fastener holes arranged parallel to one another on opposite sides of the longitudinal axis, and wherein the fastener includes a pair of dimensioned bolts and adapted to mate with the holes of the fastener in a coupling relationship. 29. In combination with a pair of pipe end pieces, each of the pipe end pieces being connected to a respective free end of a piece of pipe, and having an opening inward of an orifice, wherein flow a fluid through the pipe end piece and the pipe piece, a connector adapted to interconnect the pair of pipe end pieces, so that the fluid can flow between and through the respective pieces of pipe , which comprises: (a) a body structure of generally cylindrical shape extending along a longitudinal axis from a first end to a second end, and having a hole extending longitudinally through the structure of body, and between the first and second ends, and which is oriented centrally around the longitudinal axis, this body structure having an external body surface extending longitudinally Along it, and arranged radially from the longitudinal axis at a first radial distance, - and (b) a pair of tube structures, each of the tube structures defining a conduit extending therethrough. , and having a distal end and a proximal end, each of the tube structures being connected to a respective end of the first and second ends of the body structure at said proximal end, whereby, the duct is oriented centrally around of the longitudinal axis, such that the conduits and the orifice form a continuous passage between these distal ends of the pair of tube structures and through this pair of tube structures and of the body structure, each of the structures having tube an outer tube surface extending longitudinally along, and radially from, the longitudinal axis, at a second radial distance, the first radial distance being greater than the second radial distance, each operating from the pair of tube structures to be inserted in a removable manner through the "opening and into the hole of a respective part of the pipe end pieces, to engage with the end pieces of pipe in an intimate fit relationship, thus allowing fluid to flow between and through the respective pipe parts. 30. A connector in accordance with the claim in claim 29, characterized in that the body structure includes a pair of conical end portions, each of the conical end portions tapering from the outer body surface towards a respective end of the first and second ends mentioned. A connector in accordance with claim 30, characterized in that the body structure includes a plurality of flanges extending longitudinally along and projecting radially outwardly from the outer body surface, at relationship with the mentioned longitudinal axis. 32. A connector according to claim 31, characterized in that each of the flanges is configured in cross-section in a shape of an inverted "V", and wherein the consecutive flanges of the plurality of flanges in the shape of Inverted V are separated from one another by a V-shaped channel extending longitudinally along said body structure. 33. "A connector in accordance with claim 29, characterized in that each of the tube structures includes a plurality of collars connected with, and extending circumferentially around, and projecting radially outward from, the outer tube surface, each of the plurality of collars being separated from one another to define an annular channel disposed therebetween 34. A connector in accordance with claim 29, characterized in that each of the structures The tube includes a trunco-conical head member disposed on and extending circumferentially around the outer tube surface, starting with the head member at the distal end, and diverging outward toward the structure of the tube. mentioned body. SUMMARY OF THE INVENTION A pipe end piece interconnects a free end of a piece of pipe and a pipe connector or connection, such that a fluid can flow between the pipe and the connection or connector. The pipe end piece includes a body member extending along a longitudinal axis, with a hole extending longitudinally therethrough. The body member has an elongated body portion, a donut-shaped head portion, and a trunco-conical tail portion. The body portion has an outer body surface configured in a shape of a trunk that thins from a first end and a second end. The donut-shaped head portion is connected to the first end of the body portion, and extends radially outwardly relative to the longitudinal axis, to form, in cross section, an external curved surface starting from the first end , and that ends in an outer peripheral edge that defines a first opening in the hole. A trunco-conical tail portion connects to the second end of the body portion, and thins from the second end and toward a second opening inward of the hole. The body member has a first internal surface and a second internal surface that define the hole, and has a plurality of grooves that are spaced apart from one another, and extending longitudinally along and outward from the body surface external The present invention also includes a connector adapted to interconnect a pair of pipe end pieces, such that the fluid can flow between and through the respective pipe parts and the pair of pipe connectors, and present a resisting connection. obstruction when dragging from a portable or fixed source of oxygen gas to an outpatient. The most representative figure of the invention is number 1. * * * * *