The present application is directed to a fluid connection apparatus 1 configured to facilitate the connection and sealing between a fluid line fitting 11 on a fluid line and a connector 14, as shown in
Fluid line fitting 11 may be referred to as a “banjo” block or “banjo” fitting. For purposes of this description, “fluid line fitting”, “banjo block”, “banjo coupling”, and “banjo fitting” may be used interchangeably to refer to the terminal end of a fluid line, or a fitting designed for attachment to the terminal end of a fluid line, having the shape of a hollow, truncated solid, and having a radial passage for fluid flow which connects the inner wall of the hollow, truncated solid to a fluid line of which it is a terminal end or to which it is attached. One example of such a hollow truncated solid may be seen in fluid line fitting 11 as shown in
The fluid line fitting may include a lower portion in the form of fluid conducting portion 11B for connecting the fluid line fitting to a fluid line. An internal passage extends longitudinally along the fluid conducting portion and exits in the hollow interior of the fluid line fitting, as shown in
Connector 14 may be any connector having a fluid passage formed therein, including a screw, bolt, hollow bolt, or banjo bolt, having an internal passage for conducting fluid, that is capable of being inserted through fluid line fitting 11 in order to connect a fluid line that is in fluid communication with the fitting to another apparatus intended to receive or transmit fluid through the fluid line.
For purposes of the present application, “Fluid” refers to (i) any liquid or gas, including but not limited to water, oil, hydraulic fluid, pneumatic fluid, drilling fluid, and fuel (including but not limited to gasoline, diesel fuel, and kerosene); (ii) any solid capable of being transported by flow similar to a liquid, including by aeration; and (iii) any mixture of fluid and solid capable of being transported by flow similar to a liquid, such as a slurry. Further, “substantially” has its ordinary and accepted meaning as applied in the context of the present apparatus, meaning for example that portions of an apparatus described as “substantially parallel” to each other do not need to be absolutely parallel to each other and may deviate in parallel orientation to each other up to any amount that will still permit the fluid connection apparatus to be assembled to a fluid fitting without undue stress to the fluid connection apparatus, and while maintaining seal integrity when so assembled.
With reference to
Fluid line fitting passage 12 extends longitudinally along the interior of fluid conducting portion 11B of fluid line fitting 11 to provide fluid connection between the fluid line fitting 11 and barbed connector 13, to which a fluid line may be readily attached. Other methods of attaching a fluid line to the fitting may be used; alternatively, the fluid line or fluid line fitting 11 may be integral with, and form a terminal end of, the fluid line.
First upper portion 11A of fluid line fitting 11 further includes aperture 11C with first and second annular openings 11D and 11E through which connector 14 may be inserted to connect a fluid line attached to fluid line fitting 11 to an apparatus intended to receive or provide fluid through the fluid line. When connector 14, i.e. a hollow bolt having transverse passages or fluid passages 15 connecting to a longitudinal passage that terminates in an opening at the end of the shaft of hollow connector 14, is inserted through the annular openings 11D and 11E, passage 15 is brought within aperture 11C such that a fluid connection is formed between passage 12 in fluid conducting portion 11B of fluid line fitting 11, passage 11C of fluid line fitting 11, and passage 15 in connector 14. The interior surface of passage 11C may or not be threaded, such as to engage a threaded hollow connector when inserted.
Connector 14 may be a hollow bolt having a proximal end 21 with a head or other structure intended for use in threading and tightening and/or loosening the bolt with a tool, such as a wrench; a shaft 22 extending longitudinally from the proximal end; and a distal end 25. The shaft is at least partially threaded, and includes at least two internal passages; a first passage extending longitudinally along the shaft and for at least a portion of its length, terminating in an opening in distal end 25 of the bolt; and a second passage transverse to the first passage and shown as 15 in
As shown In
Using
Fluid connection assembly 1 includes at least two functional portions which may be overmolded together. The first portion is a U-shaped or saddle-shaped portion 30 as shown in
The U-shaped carrier 30 includes first parallel portion 2 and second parallel portion 3. The two parallel portions, 2 and 3, are joined by a bridging portion 6, with a central space 18 present between the two parallel portions, 2 and 3, to accept a fluid line fitting. Bridging portion 6 may include stabilizing portion 7 to provide resistance to excessive movement of parallel portions 2 and 3 towards or away from each other. Some flexibility may be acceptable in parallel portions 2 and 3.
Parallel portions 2, 3 have respective annular openings 4 and 5 such that, when a fluid line fitting 11 is brought into the central space 18 in an assembled configuration, the threaded end of a hollow connector 14 may be inserted first through one annular opening, then through the fluid line fitting 11, and then through the second annular opening 5. In the assembled configuration, the fluid line fitting 11 is placed into central space 18 of the fluid connection apparatus 1 with the annular openings 11D and 11E of the fluid line fitting 11 aligned with the annular openings 4 and 5 of parallel portions 2 and 3, and with the fluid conducting portion 11B of the fluid line fitting 11 directed so as not to prevent assembly of the fluid line fitting 11 to the fluid connection apparatus 1 through contact with the bridging portion 6 of the fluid connection apparatus 1.
Fluid connection assembly 1 may include stabilizing features 7 associated with the bridging portion 6, such as ribs or struts, to resist excessive distortion when the bolt or other connector is tightened, as well as to prevent distortion of the fluid connection apparatus 1 during manufacture, packing, unpacking, and other handling. The fluid connection apparatus 1 may have some, limited flexibility so that an assembler can more readily manipulate it as needed during installation, such as to achieve full alignment of the hollow with the annular openings in the fluid connection apparatus and fluid line fitting prior to insertion of the hollow connector.
First and second portions 2 and 3 are depicted in the figures, and are generally described herein, as parallel or as substantially parallel. This is because at least most fluid line fittings will have substantially parallel faces for assembly to the fluid connection apparatus. However, the present fluid connection apparatus may readily be configured to match the configuration of the fluid line fitting for which its use is intended. For example, one can envision a V-shaped fluid line fitting in which one connector having a fluid passage formed therein is inserted into one side of the V and another connector having a fluid passage formed therein is inserted into the other side, such as to connect two fluid lines. The present fluid connection fitting could then be designed in a corresponding V shape, in which a first substantially planar portion would be parallel with one side of the V and a second substantially planar portion would be parallel with the other side of the V, but the two portions would not be parallel with each other. Therefore, while the first and second portions should each be parallel with the corresponding surface of the fluid line fitting to which they are assembled, it is not necessary that they be parallel to each other.
First and second portions 2 and 3 are also depicted in the figures, and may be generally described herein, as planar or substantially planar. As with the parallelism discussed above, however, this planarity is not a functional requirement of the fluid connection apparatus as such, but rather reflects the fact that most if not all fluid line fittings with which it will be used will have substantially planar sides to which the fluid connection apparatus will be assembled. The outer surfaces of at least the first and second portions do not seal directly against the corresponding faces of the fluid line fitting, and therefore may have any configuration, and/or include any features, that do not prevent effective use of the fluid connection apparatus. In particular but without limitation, the outer surface of either or both of first and second portions 2 and 3 may include stand-offs, captivators such as to secure and/or route fluid lines, wires or cables, and other functional features without departing from the present scope.
In an embodiment where first and second portions 2 and 3 are designed to be substantially parallel, significant deviation from that parallelism may be introduced unintentionally during manufacture, packing, unpacking, and use of the fluid connection apparatus without compromising its utility. This is because the process of tightening the connector having a fluid passage formed therein to assemble the bolt, fluid connection apparatus, fluid line fitting, and the apparatus with which the fluid line is being connected will compress first and second portions 2, 3 against the corresponding faces of the fluid line fitting, and this compression will bias the two portions 2, 3 towards sealing orientations.
In the fluid connection apparatus 1, each annular opening 4 and 5 includes washer configuration 40 to seal the connection between the fluid line fitting 11 and the hollow connector having fluid passage 15. When the fluid line fitting 11 is placed between and oriented with the annular first opening and annular second opening of the fluid connection apparatus 1, sealing may be accomplished by tightening the threaded end of the hollow connector that extends through the second annular opening into a correspondingly threaded receptacle intended to receive a fluid from or provide a fluid to the fluid line. Tightening of the hollow connector biases the annular first opening and annular second opening of the fluid connection apparatus 1, and the washer configuration 40 associated with each, towards each other, causing each washer configuration 40 to be compressed against, and seal the connection of the fluid connection apparatus with, a corresponding face of the fluid line fitting, as shown in
Representative, but non-limiting, washer configurations, each generally referred to at 40, are shown in
As shown in
As shown in the end view of
The carrier 30 and washer configuration 40 of the present fluid connection apparatus 1 may be formed of any material capable of overmolding and that otherwise meets the specifications of the intended use. Plastic may be used, such as thermoplastic, including but not limited to acrylonitrile butadiene styrene. Both the carrier 30 and the washers of washer configuration 40 may be composed of plastic, or one may be composed of a metal to which the other, plastic part is overmolded; in the case of the washers, the metal would need to be sufficiently deformable to provide a compression seal. Where plastic is used for both the carrier 30 and washer configuration 40, the plastic may be the same plastic for each or different plastics may be used. Similarly, the washers may be composed all of the same material, or of different materials, including rubber or a rubber coating. The substantially planar portions of the carrier 30 may be solid, or may be formed with an interior void to facilitate overmolding of the washers. Use of other materials and techniques will be apparent to those of skill in the art and are within the present scope.
Variability in manufacture of the fluid connection apparatus, including forces applied to the carrier 30 during the overmolding process and in packing, unpacking, handling, and assembly of the fluid connection apparatus, may each or all cause some variation in relationship or orientation of the portions of the fluid connection apparatus relative to each other without causing it to become unusable, provided that when the fluid connection apparatus is assembled to a fluid fitting and a banjo bolt is used to connect the fluid fitting and fluid connection apparatus, the fluid connection apparatus maintains sufficient dimensional integrity to provide an effective seal for the fluid.
While the present fluid connection apparatus and its use have been described with reference to particular embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the intended scope. In addition, many modifications may be made to adapt a particular situation or material to these teachings without departing from the intended scope. Therefore, it is intended that the scope not be limited to the particular embodiments disclosed herein, but rather will include all embodiments falling within the scope and spirit of the appended claims.