RAILCAR FOR TRANSPORT OF STEEL COILS WITH REMOVABLE BI-LEVEL ROOF
20230249717 · 2023-08-10
Inventors
Cpc classification
B61D45/003
PERFORMING OPERATIONS; TRANSPORTING
B61D45/00
PERFORMING OPERATIONS; TRANSPORTING
International classification
Abstract
A railcar for transporting one or more steel coils. In various embodiments, the railcar includes a front truck assembly, a rear truck assembly, a center sill assembly including a center sill operably supported by the front and rear truck assemblies, and first and second side walls supported by and substantially coupled to the center sill assembly such that the first and second side walls are spaced-apart from and substantially parallel to the longitudinal axis of the center sill.
Claims
1. A railcar removable roof positionable on first and second side walls of a railcar, the railcar removable roof comprising: a first section having a first height; a second section having a second height; a third section having a third height; and a lifting member attached to and extending upwardly from the second section, wherein: (a) the second section is between the first section and the third section, (b) the second height is less than the first height, (c) the second height is less than the third height, (d) the first section is positionable over a front outer-coil holding assembly of the railcar, (e) the third section is positionable over a rear outer-coil holding assembly of the railcar, (d) the second section is positionable over a plurality of inner-coil holding assemblies of the railcar, wherein the front outer-coil holding assembly of the railcar and the rear outer-coil holding assembly of the railcar, are configured to hold larger diameter coils than the plurality of inner-coil holding assemblies of the railcar, and (e) the first section, the second section, and the third section are integrally formed.
2. The railcar removable roof of claim 1, wherein the first height is equal to the third height.
3. The railcar removable roof of claim 1, wherein the first section includes: (a) a first section top wall, (b) a first section outer end wall extending downwardly from the first section top wall, (c) a first section inner wall extending downwardly from the first section top wall, the first section inner wall spaced-apart from the first section outer end wall, the first section inner wall being shorter in height than the first section outer end wall, (d) a first section first side wall, and (e) a first section second side wall spaced-apart from the first section first side wall.
4. The railcar removable roof of claim 3, wherein the third section includes: (a) a third section top wall, (b) a third section outer end wall extending downwardly from the third section top wall, (c) a third section inner wall extending downwardly from the third section top wall, the third section inner wall spaced-apart from the third section outer end wall, the third section inner wall being shorter in height than the third section outer end wall, (d) a third section first side wall, and (e) a third section second side wall spaced-apart from the third section first side wall.
5. The railcar removable roof of claim 4, wherein the second section includes: (a) a second section top wall, (b) a second section first side wall, and (c) a second section second side wall spaced-apart from the second section first side wall.
6. The railcar removable roof of claim 5, wherein the lifting member is attached to and extends upwardly from the second section top wall.
7. The railcar removable roof of claim 6, wherein the first section first side wall, the second section first side wall, and the third section first side wall are integrally formed and extend in a first plane.
8. The railcar removable roof of claim 7, wherein the first section second side wall, the second section second side wall, and the third section second side wall are integrally formed and extend in a second plane.
9. A railcar removable roof positionable on a railcar, the railcar removable roof comprising: a first section having a first height, wherein the first section includes: (a) a first section top wall, (b) a first section outer end wall extending downwardly from the first section top wall, (c) a first section inner wall extending downwardly from the first section top wall, the first section inner wall spaced-apart from the first section outer end wall, the first section inner wall being shorter in height than the first section outer end wall, (d) a first section first side wall, and (e) a first section second side wall spaced apart from the first section first side wall; a second section having a second height, wherein the second section includes: (a) a second section top wall, (b) a second section first side wall, and (c) a second section second side wall spaced-apart from the second section first side wall; a lifting member attached to and extending upwardly from the second section top wall; and a third section having a third height, wherein the third section includes: (a) a third section top wall, (b) a third section outer end wall extending downwardly from the third section top wall, (c) a third section inner wall extending downwardly from the third section top wall, the third section inner wall spaced-apart from the third section outer end wall, the third section inner wall being shorter in height than the third section outer end wall, (d) a third section first side wall, and (e) a third section second side wall spaced-apart from the third section first side wall; wherein: (a) the second section is between the first section and the third section, (b) the second height is less than the first height, (c) the second height is less than the third height, (b) the first height is equal to the third height, (d) the first section is positionable over a front outer-coil holding assembly of the railcar, (e) the third section is positionable over a rear outer-coil holding assembly of the railcar, (d) the second section is positionable over a plurality of inner-coil holding assemblies of the railcar, wherein the front coil holding assembly of the railcar and the rear coil holding assembly of the railcar are configured to hold larger diameter coils than the plurality of inner-coil holding assemblies of the railcar, and (e) the first section, the second section, and the third section are integrally formed.
10. The railcar removable roof of claim 9, wherein the first section first side wall, the second section first side wall, and the third section first side wall are integrally formed and extend in a first plane.
11. The railcar removable roof of claim 9, wherein the first section second side wall, the second section second side wall, and the third section second side wall are integrally formed and extend in a second plane.
12. The railcar removable roof of claim 9, wherein the first, second, and third sections are positionable on first and second side walls of the railcar.
13. The railcar removable roof of claim 9, wherein the first section first side wall, the second section first side wall, and the third section first side wall are positionable on a first side wall of the railcar, and the first section second side wall, the second section second side wall, and the third section second side wall are positionable on a second side wall of the railcar.
Description
BRIEF DESCRIPTION OF THE DRAWINGS
[0017] To assist those of ordinary skill in the relevant art in making and using the subject matter hereof, reference is made to the appended drawings, which disclose non-limiting and non-exhaustive embodiments that are not intended to be drawn to scale, and in which like reference numerals are intended to refer to similar elements for consistency, unless otherwise specified. For purposes of clarity, not every component may be labeled in every drawing. Non-limiting embodiments of this disclosure are described in reference to the following drawings.
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DETAILED DESCRIPTION
[0042] The present disclosure now will be described more fully hereinafter with reference to the accompanying drawings, which form a part hereof, and which show, by way of illustration, specific exemplary embodiments by which the present disclosure may be practiced. This present disclosure may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the present disclosure to those skilled in the art. Among other things, the present disclosure may be embodied as methods or devices. The following detailed description and/or arrangement of the components set forth in the following description or illustrated in the drawings is, therefore, not to be taken in a limiting sense, unless otherwise explicitly noted. In fact, the railcar embodiments described in the present disclosure are capable of other embodiments or of being practiced or carried out in various ways.
[0043] Unless otherwise defined herein, mechanical and technical terms used in connection with the present disclosure shall have the meanings that are commonly understood by those of ordinary skill in the art. Further, unless otherwise required by context, singular terms shall include pluralities and plural terms shall include the singular. The foregoing constructions are generally produced according to conventional methods well known in the art. Still, it is to be understood that the phraseology and terminology employed herein is for purposes of description, and should not be regarded as limiting.
[0044] As used in the description herein, the terms “comprises,” “comprising,” “includes,” “including,” “has,” “having,” or any other variations thereof, are intended to cover a non-exclusive inclusion. For example, unless otherwise noted, a process, method, article, or apparatus that comprises a list of elements is not necessarily limited to only those elements but may also include other elements not expressly listed or inherent to such process, method, article, or apparatus.
[0045] Further, unless expressly stated to the contrary, “or” refers to an inclusive and not to an exclusive “or.” For example, a condition A or B is satisfied by one of the following: A is true (or present) and B is false (or not present), A is false (or not present) and B is true (or present), and both A and B are true (or present).
[0046] In addition, use of the “a” or “an” are employed to describe elements and components of the embodiments illustrated herein. This is done merely for convenience and to give a general sense of the present disclosure. This description should be read to include one or more, and the singular also includes the plural unless it is obvious that it is meant otherwise. Further, use of the term “plurality” is meant to convey “more than one” unless expressly stated to the contrary.
[0047] The use of the term “at least one” will be understood to include one as well as any quantity more than one, including but not limited to, 2, 3, 4, 5, 10, 15, 20, 30, 40, 50, 100, etc. The term “at least one” may extend up to 100 or 1000 or more, depending on the term to which it is attached; in addition, the quantities of 100/1000 are not to be considered limiting, as higher limits may also produce satisfactory results. In addition, the use of the term “at least one of X, Y, and Z” will be understood to include X alone, Y alone, and Z alone, as well as any combination of X, Y, and Z. The use of ordinal number terminology (i.e., “first,” “second,” “third,” “fourth,” etc.) is solely for the purpose of differentiating between two or more items and is not meant to imply any sequence or order or importance to one item over another or any order of addition, for example.
[0048] As used herein, the term “substantially” means that the subsequently described event or circumstance completely occurs or that the subsequently described event or circumstance occurs to a great extent or degree. For example, when associated with a particular event or circumstance, the term “substantially” means that the subsequently described event or circumstance occurs at least 80% of the time, or at least 85% of the time, or at least 90% of the time, or at least 95% of the time. For instance, the term “substantially adjacent” may mean that two items are 100% adjacent to one another, or that the two items are within close proximity to one another but are not 100% adjacent to one another, or that a portion of one of the two items is not 100% adjacent to the other item but is within close proximity to the other item. As another example, the term “substantially coupled” may mean that two items are 100% coupled (e.g., physically attached) to one another, or that the two items are at least 95%, 90%, or 85% coupled to one another.
[0049] For another example, in the context of the present disclosure, the term “substantially coupled” may be a reference to the collective or individual quantitative surface area of each of the two items that is physically attached or similarly; it may be a reference to the strength of the bond between the two items or components in the context they exist in association with the present disclosure. For example, two elongated rectangular bars may be “substantially coupled” (i.e., at least 80-100% coupled) to one another by operation of even one mechanical fastener set (e.g., a screw, nail, or nut-bolt combination) that engages both bars via a single bore. This is particularly true where the two bars are physically associated with an apparatus in such a manner as to limit the freedom of movement of the bars. Similarly, two pieces of metal may be “substantially coupled” together by welding, the substantiality of such may depend on a variety of factors understood by a person of ordinary skill in the art having the present specification, drawings, and claims before them.
[0050] As used herein, any reference to “one embodiment,” “an embodiment,” “some embodiments,” “one example,” “for example,” or “an example” means that a particular element, feature, structure or characteristic described in connection with the embodiment is included in at least one embodiment. The appearance of the phrase “in some embodiments” or “one example” in various places in the specification is not necessarily all referring to the same embodiment, for example.
[0051]
[0052] As illustrated by
[0053] As further illustrated by
[0054] As finally illustrated by
[0055] As is standard, railcar 100 has a front truck assembly 101 and a rear truck assembly 102. The front truck assembly 101 has at least one pair of front truck wheels, an axle coupled to each of the one pair of front truck wheels, and a front truck connection point positioned on the front truck assembly to distribute a load placed on the front truck assembly substantially evenly. As shown in
[0056] As illustrated in
[0057]
[0058] As shown in
[0059] As noted above, railcar 100 includes a plurality of coil holding assemblies 120 that are disposed over the center sill assembly 110 and extend between the first and second side walls 112. Starting from the front end of the railcar 100 (see
[0060] The present disclosure contemplates various different configurations for the configuration and connection of the first coil-receiving plate and the second front coil-receiving plate of each of the coil holding assemblies of the railcar. In one example embodiment of the present disclosure, as best seen in
[0061] It should be appreciated from the above that in various embodiments, the present disclosure contemplates a railcar for transporting one or more steel coils, each steel coil having a coil diameter, wherein the railcar includes: (a) a front truck assembly including at least one pair of front truck wheels, an axle coupled to each pair of front truck wheels; (b) a rear truck assembly including at least one pair of rear truck wheels, an axle coupled to each pair of rear truck wheels; (c) a center sill assembly operably supported by the front truck assembly and by the rear truck assembly, the center sill having a longitudinal axis; (d) a first side wall supported by and substantially coupled to the center sill assembly such that the first side wall is spaced-apart from and substantially parallel to the longitudinal axis on a first side of the longitudinal axis; (e) a second side wall supported by and substantially coupled to the center sill assembly such that the second side wall is spaced-apart from and substantially parallel to the longitudinal axis on a second side of the longitudinal axis; and (f) a plurality of coil holding assemblies sitting over the center sill and extending to each of the first and second side walls, wherein each coil holding assembly includes a first coil-receiving plate and a second coil-receiving plate that partially define a coil trough substantially transverse to the longitudinal axis of the center sill, the first coil-receiving plate including a first bottom foot extending toward the second coil-receiving plate, the second front coil-receiving plate including a second bottom foot extending toward the first coil-receiving plate, the first bottom foot being longer than the second bottom foot, and the first bottom foot and the second bottom foot being attached in an overlapping configuration. In various such embodiments, the longer first bottom foot is overlapped by the shorter second bottom foot. In various such embodiments, the shorter second bottom foot is welded to the longer first bottom foot.
[0062] As shown in
[0063] In various example embodiments, with the first and second coil-receiving plates substantially coupled together, the first and second front coil-receiving plates 121L1 and 122L1 are bent into their desired shape, preferably using a press break. In various embodiments, the outer-coil holding assembly 120L1 has, as shown in
[0067]
[0068] With reference to
[0069] It should be appreciated that the transversely extending stiffeners that are suitably attached such as by welding to the respective outer faces of the coil-receiving plates and to the side walls as described herein, may be U-shaped, L-shaped, or another suitable shape (such as but not limited to a tubular shape). It should also be appreciated that the transversely extending stiffeners are configured to transfer loads from the coil-receiving plates to the side walls and the center sill.
[0070] Turning now to the back end of the railcar 100, there is a rear, outer-coil holding assembly 120L2 that includes first and second rear coil-receiving plates 121L2 and 122L2, respectively. Each of these first and second rear coil-receiving plates has an inner face and an outer face. As shown in the figures (see, e.g.,
[0071] In various example embodiments, with the plates substantially coupled together, the first and second rear coil-receiving plates are bent into their desired shape preferably using a press break . The outer-coil holding assembly 120L2 has: [0072] a. a rear coil trough 123L2 (not shown) (substantially transverse to the longitudinal axis of the center sill) that is substantially flat and positioned about at least one of the lower edges of the rear coil-receiving plates 121L2 and 122L2, [0073] b. the first rear coil-receiving plate 121L2 articulated, e.g., bent, (beyond the coil trough) generally away from the center sill 111, and [0074] c. the second rear coil-receiving plate 122L2 articulated, e.g., bent, (beyond the coil trough) as a spaced-apart, substantially mirror image of the first rear coil-receiving plate such that the first and second rear coil-receiving plates 121L2 and 122L2 have space to accommodate (between their respective inner faces) a steel coil having as much as a large coil diameter.
[0075] Each of the side edges of the first and second rear coil-receiving plates 121L2 and 122L2 is substantially coupled to a respective one of the first and second side walls 112. Preferably, this substantial coupling involves welding a T-joint between each coil-receiving plate 121L2 and 122L2 and a respective side wall 112. The rear, outer-coil holding assembly 120L2 further includes stiffeners such as U-shaped stiffeners 124 extending across and substantially respectfully coupled (preferably by welding) to the outer faces of each of the first rear coil-receiving plate 121L2 and second rear coil-receiving plate 122L2, and wherein the U-shaped stiffeners 124 physically ride on top of the center sill 111. Each U-shaped stiffener 124 is also substantially coupled to both the first and second side walls 112. In particular, the U-shaped stiffeners 124 are preferably welded at both ends to the respective outer faces of the coil-receiving plates 121 and 122 and the railcar side walls 112 using a fillet welding technique. The rear, outer-coil holding assembly 120L2 is positioned on the railcar 100 such that the rear coil trough 123L2 is substantially aligned over the rear truck connection point. Also visible in
[0076] Next, the railcar 100 has a plurality of paired inner-coil holding assemblies (120M and 120S) positioned between the front and rear outer-coil holding assemblies, with each assembly sitting over the center sill and extending to each of the first and second side walls 112. Each of the inner-coil holding assemblies (120M and 120S) includes first and second inner coil-receiving plates. Each of the first and second inner coil-receiving plates has an inner face and an outer face. The inner and outer faces are bounded by a lower edge and at least two side edges. The lower edge of the first inner coil-receiving plate is substantially coupled to one of the inner or outer faces of the second inner coil-receiving plate. The lower edge of the second inner coil-receiving plate is substantially coupled to the opposite of the inner or outer faces of the first inner coil-receiving plate. In particular, it is contemplated that the first and second coil-receiving plates will be overlapped by approximately 0.5 to 1.0 inches to form this lap joint. It should be appreciated that these plates include the overlapping bottom feet as describe above.
[0077] In various example embodiments, with the plates substantially coupled together, the first and second inner coil-receiving plates are bent into their desired shape preferably using a press break, such that each inner-coil holding assembly has: [0078] a. an inner coil trough substantially transverse to the longitudinal axis of the center sill, wherein the inner coil trough is substantially flat and positioned about at least one of the lower edges of the inner coil-receiving plates, [0079] b. the first inner coil-receiving plate is articulated, e.g., bent, (beyond the inner coil trough) generally away from the center sill and [0080] c. the second inner coil-receiving plate is articulated, e.g., bent, (beyond the inner coil trough) beyond the inner coil trough, as a spaced-apart, substantially mirror image of the first inner coil-receiving plate such that the first and second inner coil-receiving plates have space to accommodate (between their respective inner faces) a steel coil having as much as a medium coil diameter.
[0081] Each of the side edges of the first and second inner coil-receiving plates is substantially coupled to each of the first and second side walls 112. Stiffeners such as U-shaped stiffeners 124 extend across and are substantially coupled to the respective outer faces of each of the first and second inner coil-receiving plates and to both the first and second side walls. The example U-shaped stiffeners 124 physically ride on top of the center sill 111. In particular, the U-shaped stiffeners 124 are preferably welded at both ends to the outer faces of the coil-receiving plates 121 and 122 and the railcar side walls 112 using a fillet welding technique. The inner coil trough of the front paired inner-coil holding assembly is substantially aligned over the center sill approximately the same distance from the front truck connection point as the inner coil trough of the back paired inner-coil holding assembly is substantially aligned over the center sill from the rear truck connection point.
[0082]
[0083] It should thus be appreciated that various embodiments of the present disclosure provide a railcar for transporting one or more steel coils, each steel coil having a coil diameter, wherein the railcar includes: (a) a front truck assembly including at least one pair of front truck wheels and an axle coupled to each pair of front truck wheels; (b) a rear truck assembly including at least one pair of rear truck wheels, and an axle coupled to each pair of rear truck wheels; (c) a center sill assembly operably supported by the front truck assembly and by the rear truck assembly, the center sill having a longitudinal axis; (d) a first side wall supported by and substantially coupled to the center sill assembly such that the first side wall is spaced-apart from and substantially parallel to the longitudinal axis on a first side of the longitudinal axis; (e) a second side wall supported by and substantially coupled to the center sill assembly such that the second side wall is spaced-apart from and substantially parallel to the longitudinal axis on a second side of the longitudinal axis; and (f) a plurality of coil holding assemblies sitting over the center sill and extending to each of the first and second side walls, wherein each coil holding assembly includes a first coil-receiving plate and a second coil-receiving plate that partially define a coil trough substantially transverse to the longitudinal axis of the center sill, and an anti-deformation plate extending under the first coil-receiving plate and the second coil-receiving plate and extending over the center sill. In various such embodiments, each of the plurality of coil holding assemblies includes a first stiffener extending across and substantially coupled to an outer face of the first coil-receiving plate, the first stiffener being substantially coupled to both the first and second side walls, and a second stiffener extending across and substantially coupled to an outer face of the second coil-receiving plate, the second stiffener being substantially coupled to both the first and second side walls.
[0084]
[0085]
[0086] It should further be appreciated from the above that the present disclosure includes a railcar for transporting one or more steel coils, each steel coil having a coil diameter, wherein the railcar includes: (a) a front truck assembly including at least one pair of front truck wheels, and an axle coupled to each pair of front truck wheels; (b) a rear truck assembly including at least one pair of rear truck wheels, and an axle coupled to each pair of rear truck wheels; (c) a center sill assembly operably supported by the front truck assembly and by the rear truck assembly, the center sill having a longitudinal axis; (d) a first side wall supported by and substantially coupled to the center sill assembly such that the first side wall is spaced-apart from and substantially parallel to the longitudinal axis on a first side of the longitudinal axis; (e) a second side wall supported by and substantially coupled to the center sill assembly such that the second side wall is spaced-apart from and substantially parallel to the longitudinal axis on a second side of the longitudinal axis; and (f) a plurality of coil holding assemblies sitting over the center sill and extending to each of the first and second side walls, wherein each coil holding assembly includes: (i) a first coil-receiving plate and a second coil-receiving plate that partially define a coil trough substantially transverse to the longitudinal axis of the center sill, (ii) a first stiffener extending across and substantially coupled to an outer face of the first coil-receiving plate, the first stiffener being substantially coupled to both the first and second side walls, and (iii) a second stiffener extending across and substantially coupled to an outer face of the second coil-receiving plate, the second stiffener being substantially coupled to both the first and second side walls. In various such embodiments, for at least one of the plurality of coil holding assemblies, the first stiffener is U-shaped and the second stiffener is U-shaped. In various such embodiments, for one of the plurality of coil holding assemblies, the first stiffener is L-shaped and the second stiffener is L-shaped. In various such embodiments, for at least one of the plurality of coil holding assemblies, the first stiffener is L-shaped and the second stiffener is L-shaped. In various such embodiments, at least one of the plurality of coil holding assemblies includes an anti-deformation plate transversely extending to the stiffeners. In various such embodiments, the anti-deformation plate extends over the center sill. In various such embodiments, each of the plurality of coil holding assemblies includes an anti-deformation plate transversely extending to the stiffeners. In various such embodiments, each of the anti-deformation plates extends over the center sill.
[0087] It should further be appreciated from the above that the present disclosure includes a railcar for transporting one or more steel coils, each steel coil having a coil diameter, wherein the railcar includes: (a) a front truck assembly including at least one pair of front truck wheels, an axle coupled to each pair of front truck wheels, and a front truck connection point positioned to distribute a load placed on the front truck assembly substantially evenly; (b) a rear truck assembly including at least one pair of rear truck wheels, an axle coupled to each pair of rear truck wheels, and a rear truck connection point positioned to distribute a load placed on the rear truck assembly substantially evenly; (c) a center sill assembly operably supported at the front truck connection point by the front truck assembly and at a rear truck connection point by the rear truck assembly, the center sill having a longitudinal axis; (d) a first side wall supported by and substantially coupled to the center sill assembly such that the first side wall is spaced-apart from and substantially parallel to the longitudinal axis on a first side of the longitudinal axis; (e) a second side wall supported by and substantially coupled to the center sill assembly such that the second side wall is spaced-apart from and substantially parallel to the longitudinal axis on a second side of the longitudinal axis; (f) a front outer-coil holding assembly sitting over the center sill and extending to each of the first and second side walls, wherein: (i) the front outer-coil holding assembly including first and second front coil-receiving plates, and first and second stiffeners respectively attached to the first and second front coil-receiving plates and to the first and second side walls, (ii) the front outer-coil holding assembly includes a front coil trough substantially transverse to the longitudinal axis of the center sill, and (iii) the front coil trough is substantially aligned over the front truck connection point; (g) a rear outer-coil holding assembly sitting over the center sill and extending to each of the first and second side walls, wherein: (i) the rear outer-coil holding assembly includes first and second rear coil-receiving plates, and first and second stiffeners respectively attached to the first and second front coil-receiving plates and to the first and second side walls, (ii) the rear outer-coil holding assembly includes a rear coil trough substantially transverse to the longitudinal axis of the center sill, (iii) the rear coil trough is substantially aligned over the rear truck connection point; and (h) a plurality of inner-coil holding assemblies sitting over the center sill, extending to each of the first and second side walls, and positioned between the front and rear outer-coil holding assemblies, wherein: (i) each inner-coil holding assembly including first and second inner coil-receiving plates, and first and second stiffeners respectively attached to the first and second front coil-receiving plates and to the first and second side walls, (ii) each inner coil holding assembly including an inner coil trough substantially transverse to the longitudinal axis of the center sill, and (iii) the inner coil trough of the front paired inner-coil holding assembly being substantially aligned over the center sill approximately the same distance from the front truck connection point as the inner coil trough of the back paired inner-coil holding assembly is substantially aligned over the center sill from the rear truck connection point. In various such embodiments, the stiffeners of the front outer-coil holding assembly are U-shaped stiffeners. In various such embodiments, the stiffeners of the rear outer-coil holding assembly are U-shaped stiffeners. In various such embodiments, the stiffeners of each inner outer-coil holding assembly are U-shaped stiffeners. In various such embodiments, the stiffeners of the front outer-coil holding assembly are L-shaped stiffeners. In various such embodiments, the stiffeners of the rear outer-coil holding assembly are L-shaped stiffeners. In various such embodiments, the stiffeners of the front outer-coil holding assembly are U-shaped stiffeners and L-shaped stiffeners. In various such embodiments, the stiffeners of the rear outer-coil holding assembly are U-shaped stiffeners and L-shaped stiffeners.
[0088]
[0089] The foregoing description and drawings merely explain and illustrate the present disclosure and the present disclosure is not limited thereto. While the specification is described in relation to certain implementations or embodiments, many details are set forth for the purpose of illustration. Thus, the foregoing merely illustrates the principles of the present disclosure. For example, the present disclosure may have other specific forms without departing from its spirit or essential characteristics. The described arrangements are illustrative and not restrictive. To those skilled in the art, the present disclosure is susceptible to additional implementations or embodiments and certain details described in this application may be varied considerably without departing from the basic principles of the present disclosure. It will thus be appreciated that those skilled in the art will be able to devise various arrangements which, although not explicitly described or shown herein, embody the principles of the present disclosure and, thus, within its scope and spirit.