Patent Grant
9284128
The present disclosure relates generally to support systems. More particularly, the present disclosure relates to ball transfer units.
Ball transfer units provide low friction surfaces for transporting items. A plurality of ball transfer units may be inserted in a mounting structure (sometimes referred to as a ball panel or ball mat) in a cargo deck of an aircraft, which may allow for cargo to be easily slid over the deck in any direction. Repeated loading on the ball transfer units may cause damage to the ball transfer units or the ball panel.
A ball transfer unit support is disclosed. The ball transfer unit support may comprise a top ring, an upper portion adjacent to the top ring, a lower portion, and a shoulder between the upper portion and the lower portion.
In various embodiments, the ball transfer unit support may comprise a truncated circle. The shoulder may be configured to support a ball transfer unit. A diameter of the upper portion may be greater than a diameter of the lower portion. The top ring may comprise a retaining lip. The retaining lip may be configured to contact a bottom surface of a top skin of a ball panel. The ball transfer unit support may comprise a ball transfer unit located within the ball transfer unit support. The top ring may be configured to prevent rotation of the ball transfer unit support.
A ball transfer unit system is disclosed. The ball transfer unit system may comprise a ball panel, a ball transfer unit support, and a ball transfer unit. The ball panel may comprise an aperture. The ball transfer unit support may be located within the aperture. The ball transfer unit support may comprise a shoulder. The ball transfer unit may be located within the ball transfer unit support. A tapered neck of the ball transfer unit may be supported by the shoulder of the ball transfer unit support.
In various embodiments, the ball panel may comprise a top skin, a bottom skin, and a corrugation. The ball transfer unit support may be configured to transfer load from the ball transfer unit to a bottom section of the corrugation. The aperture may comprise a truncated circle. The ball transfer unit support may comprise a top ring including a retaining lip. The retaining lip may be configured to snap into the aperture. A clearance between a ball in the ball transfer unit and the top skin may be greater than 0.25 inches (0.64 cm). The ball transfer unit may comprise a top ring comprising a truncated circle. The aperture and a top ring of the ball transfer unit support may comprise an anti-rotation feature.
The foregoing features and elements may be combined in various combinations without exclusivity, unless expressly indicated otherwise. These features and elements as well as the operation thereof will become more apparent in light of the following description and the accompanying drawings. It should be understood, however, the following description and drawings are intended to be exemplary in nature and non-limiting.
The subject matter of the present disclosure is particularly pointed out and distinctly claimed in the concluding portion of the specification. A more complete understanding of the present disclosure, however, may best be obtained by referring to the detailed description and claims when considered in connection with the drawing figures.
The detailed description of various embodiments herein makes reference to the accompanying drawings, which show various embodiments by way of illustration. While these various embodiments are described in sufficient detail to enable those skilled in the art to practice the disclosure, it should be understood that other embodiments may be realized and that logical, chemical, and mechanical changes may be made without departing from the spirit and scope of the disclosure. Thus, the detailed description herein is presented for purposes of illustration only and not of limitation. For example, the steps recited in any of the method or process descriptions may be executed in any order and are not necessarily limited to the order presented. Furthermore, any reference to singular includes plural embodiments, and any reference to more than one component or step may include a singular embodiment or step. Also, any reference to attached, fixed, connected, or the like may include permanent, removable, temporary, partial, full, and/or any other possible attachment option. Additionally, any reference to without contact (or similar phrases) may also include reduced contact or minimal contact.
Systems and methods are disclosed herein for a ball transfer unit support. The support may be inserted in a ball panel having a top skin and a bottom skin. A standard ball transfer unit (“BTU”) may be inserted into the BTU support. The BTU may be supported by a shoulder portion of the BTU support. The BTU support may distribute vertical load from the BTU onto the bottom skin. The BTU support may snap into the top skin. Truncated sides of the BTU support may prevent the BTU support from rotating.
Referring to
Referring to
BTU 230 may be seated within BTU support 220. BTU support 220 may be generally cylindrical. BTU support 220 may comprise an upper portion 222 having a diameter D1 and a lower portion 224 having a diameter D2. In various embodiments, diameter D1 may be about 1.81 inches (4.60 cm), such as between 1.70 inches-1.90 inches (4.32 cm-4.83 cm), and diameter D2 may be about 1.35 inches (3.43 cm), such as between 1.25 inches-1.45 inches (3.18 cm-3.68 cm). BTU support 220 may comprise a shoulder 225 between upper portion 222 and lower portion 224. Shoulder 225 may be configured to support tapered neck 237 of BTU 230. Thus, vertical load on BTU 230 may be transferred from BTU 230 to BTU support 220 at the interface between tapered neck 237 and shoulder 225. A height H1 of lower portion 224 of BTU support 220 may be adjusted in order to adjust a height H3 of ball 232 above top skin 212. In various embodiments, height H1 may be about 0.912 inches (2.32 cm), such as between 0.80 inches-1.00 inches (2.03 cm-2.54 cm). In various embodiments, height H3 may be greater than 0.25 inches (0.64 cm), such as about 0.40 inches (1.0 cm), or between 0.30 inches-0.50 inches (0.76 cm-1.3 cm). A height H2 of ball 232 above the top of canister 234 may be about 0.25 inches (0.64 cm), such as between 0.20 inches-0.30 inches (0.51 cm-0376 cm). Thus, BTU support 220 may allow ball 232 to protrude further above top skin 212 than the top of canister 234. BTU support 220 may further comprise a top ring 226 adjacent to upper portion 222. Top ring 226 may be configured to snap into top skin 212 of ball panel 210, as further described with reference to
Ball panel 210 may comprise top skin 212, bottom skin 214, and corrugation 216. In various embodiments, top skin 212, bottom skin, 214, and/or corrugation 216 may comprise aluminum sheet metal. Corrugation 216 may comprise alternating top sections 217 and bottom sections 218 adjoined by vertical sections 219. Corrugation 216 may provide vertical strength to ball panel 210. Top skin 212 may comprise apertures 213 configured to accept BTU support 220. Lower portion 224 of BTU support 220 may contact bottom section 218 of corrugation 216, and may transfer the vertical load from BTU 230 to ball panel 210.
Referring to
Referring to
In various embodiments, a compliance of BTU support 220 allows BTU support 220 to be inserted through aperture 213. As BTU support 220 is inserted through aperture 213, retaining lip 312 may contact inner surface 320 of aperture 213. Top ring 226 may compress until retaining lip 312 is pushed below bottom surface 330 of top skin 212, at which point top ring 226 may decompress and retaining lip 312 may lock into place below top skin 212.
Referring to
Referring to
Benefits, other advantages, and solutions to problems have been described herein with regard to specific embodiments. Furthermore, the connecting lines shown in the various figures contained herein are intended to represent exemplary functional relationships and/or physical couplings between the various elements. It should be noted that many alternative or additional functional relationships or physical connections may be present in a practical system. However, the benefits, advantages, solutions to problems, and any elements that may cause any benefit, advantage, or solution to occur or become more pronounced are not to be construed as critical, required, or essential features or elements of the disclosure. The scope of the disclosure is accordingly to be limited by nothing other than the appended claims, in which reference to an element in the singular is not intended to mean “one and only one” unless explicitly so stated, but rather “one or more.” Moreover, where a phrase similar to “at least one of A, B, or C” is used in the claims, it is intended that the phrase be interpreted to mean that A alone may be present in an embodiment, B alone may be present in an embodiment, C alone may be present in an embodiment, or that any combination of the elements A, B and C may be present in a single embodiment; for example, A and B, A and C, B and C, or A and B and C. Different cross-hatching is used throughout the figures to denote different parts but not necessarily to denote the same or different materials.
Systems, methods and apparatus are provided herein. In the detailed description herein, references to “one embodiment”, “an embodiment”, “various embodiments”, etc., indicate that the embodiment described may include a particular feature, structure, or characteristic, but every embodiment may not necessarily include the particular feature, structure, or characteristic. Moreover, such phrases are not necessarily referring to the same embodiment. Further, when a particular feature, structure, or characteristic is described in connection with an embodiment, it is submitted that it is within the knowledge of one skilled in the art to affect such feature, structure, or characteristic in connection with other embodiments whether or not explicitly described. After reading the description, it will be apparent to one skilled in the relevant art(s) how to implement the disclosure in alternative embodiments.
Furthermore, no element, component, or method step in the present disclosure is intended to be dedicated to the public regardless of whether the element, component, or method step is explicitly recited in the claims. No claim element herein is to be construed under the provisions of 35 U.S.C. 112(f) unless the element is expressly recited using the phrase “means for.” As used herein, the terms “comprises”, “comprising”, or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
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| Number | Date | Country | |
|---|---|---|---|
| 20150307284 A1 | Oct 2015 | US |
