Patent Application
20140261834
The present invention relates to lift cranes and assemblies that may be used to support various conduits, such as electrical cables and hoses of various types, during the transportation and use of the crane. These conduits typically range from smaller than an inch to potentially several inches in diameter, depending on the function of the conduit. Regardless of the type and size, the conduits need to be run along routes and stowed in positions that minimize the risk that the conduits will be pinched, broken, or otherwise damaged during the transportation and use of the crane.
In many instances, these conduits are quite large and heavy. Previously, various cradles, such as trays, bars, and angle iron have been used to support such conduits. A disadvantage of such systems is that by their very nature these cradles are typically permanent and extend away from the structure of a crane. The permanent nature of these cradles potentially create a cascade of issues related to clearances, movement of relative parts, and act as a potential hazard to those moving and working around the crane.
Non-permanent structures, such as chains and the like, have also been used to support the conduits, but these also have various problems. For example, the conduits, as noted, are often quite heavy. Thus, the weight of any chain or chains only increases significantly the combined weight of the conduit and chains that must be raised or hoisted when installing and uninstalling the chains. Further, it typically is not possible to adjust the length of a chain easily, thus there may be several unique lengths of chain that must be used to support the various conduits at various locations around a crane. These chains of various lengths, then, may not be interchangeable depending on the particular application. Such a multiplicity of chains and specific locations would thus serve to increase the complexity and time to install and uninstall the chains during transportation, as well as increase the number of spare parts to be stocked.
Thus, there exists a need for an assembly or system for supporting conduits on a crane that is adjustable, lighter, and more easily installed than prior art systems and methods.
An assembly or system to support and couple a conduit to a structure of a crane includes a strap configured to wrap at least partly around the conduit. The strap has a length that separates a first end from a second end.
The strap includes at least one loop affixed to it and, in some embodiments, a plurality of loops. The strap includes at least one attachment device affixed to the strap and, in some embodiments, the attachment device is affixed to the strap proximate one of the first end and the second end.
Embodiments of the attachment device include a hook that has a gap sized to pass at least one of the loops and a mooring point affixed to the structure of the crane into a space defined by the hook.
The hook optionally includes a latch configured to selectively open to permit the loop or the mooring point to pass into the space and to then close to retain the loop or the mooring point within the space. The latch includes a biasing mechanism, such as a spring, to urge the latch to close when not influenced by an external force. The strap includes in some embodiments at least a second hook affixed at either the first end or the second end, whichever is opposite from the end to which the first hook is affixed.
The strap optionally includes a tensioning mechanism configured to reduce the length of the strap to an effective length that is smaller than the length of the strap. The tensioning mechanism can be of various types known in the art, including a ratchet or lever mechanism and an adjustable slide mechanism.
The assembly or system optionally includes a support strap. The support strap is configured to couple the strap to the structure at a location different from the mooring point. The support strap also includes at least one support attachment device affixed to the support strap. Optionally, the support attachment device includes a support hook that has a gap sized to pass at least one of the loops of the strap, the loop of the support strap, and the mooring point into a space defined by the support hook. The support hook optionally includes a latch and a biasing mechanism.
The support strap also includes at least one support loop affixed to the support strap. The support loop is sized to pass at least one of the support strap, the support hook, the first strap, the first hook, and the second hook through the support loop.
The support strap also optionally includes a tensioning mechanism configured to reduce the length of the support strap to an effective length that is smaller than the length of the support strap.
As used herein, “at least one,” “one or more,” and “and/or” are open-ended expressions that are both conjunctive and disjunctive in operation. For example, each of the expressions “at least one of A, B and C,” “at least one of A, B, or C,” “one or more of A, B, and C,” “one or more of A, B, or C” and “A, B, and/or C” means A alone, B alone, C alone, A and B together, A and C together, B and C together, or A, B and C together.
Various embodiments of the present inventions are set forth in the attached figures and in the Detailed Description as provided herein and as embodied by the claims. It should be understood, however, that this Summary does not contain all of the aspects and embodiments of the one or more present inventions, is not meant to be limiting or restrictive in any manner, and that the invention(s) as disclosed herein is/are and will be understood by those of ordinary skill in the art to encompass obvious improvements and modifications thereto.
Additional advantages of the present invention will become readily apparent from the following discussion, particularly when taken together with the accompanying drawings.
The present invention will now be further described. In the following passages, different aspects of the invention are defined in more detail. Each aspect so defined may be combined with any other aspect or aspects unless clearly indicated to the contrary. In particular, any feature indicated as being preferred or advantageous may be combined with any other feature or features indicated as being preferred or advantageous.
Illustrated in
The structure 20 optionally includes a mooring point 25 to which the assembly 10 can be coupled. The mooring point 25 can be an anchor, post, peg, hook, slot, pillar, threaded bolts and screws, and/or other types of mechanical structures for coupling the assembly 100 to the crane structure 20. The mooring point 25 may be affixed to a bracket 30 or be formed integrally with the structure 20, as seen with mooring point 25′ in
The assembly 100 includes a first strap 105 configured to wrap at least partly around the conduit 15. The strap 105 in
The first strap 105 is typically formed a woven or spun material, such as nylon or other synthetic material, but it can also be formed of leather, hemp, fiber, and other similar materials.
The first strap 105 includes a first side 110 and second side 115 spaced apart from the first side, as best seen in
The first strap 105 optionally also includes at least one loop 135 affixed to it. As illustrated in
The loop base 140 includes an axis 145 that typically is substantially parallel (e.g., +/−10 degrees) to a short axis 150 of the first strap 105 as best illustrated in
The first strap 105 includes at least one attachment device 170, which may include open hooks; closable hooks; loops and/or holes formed within the first strap 105 and configured to hang from the mooring point 25 in the form of a hook or peg on the crane structure 20; plates with any variety of slots and/or holes that can be bolted or otherwise permanently or temporarily attached to the mooring point 25; and other similar and/or equivalent structures. In the embodiment illustrated in
The hook 170 optionally includes a latch 185 configured to selectively open to permit the loop 135 or the mooring point 25 to pass into the space 180 and to then close to retain the loop 135 or the mooring point 25 within the space 180. The latch 185 includes a biasing mechanism 190, such as a spring, to urge the latch 185 to close when not influenced by an external force.
In the embodiment illustrated, the hook 170 includes a hook base 195 proximate to the first end 125 or the second end 130 to which the hook 170 is affixed to the strap 105. The hook base 195 has an axis 200 that is substantially parallel (e.g., +/−10 degrees) to the short axis 145 of the first strap 105. In some embodiments, the hook 170 may have a hook base 195 with an axis that is not substantially parallel to the short axis 145 of the first strap 105.
The first strap 105 includes in some embodiments at least a second attachment device 205, which in the embodiment illustrated is a second hook affixed to the first strap at some point along the length 120 of the first strap 105. (As with the at least one attachment device 170, this specification generally discusses the second attachment device 205 within the context of a hook, although it will be understood that any of the above described alternatives of an attachment device and their equivalents fall within the scope of the disclosure and the claims.) In the embodiment illustrated, the second hook 205 is affixed proximate either the first end 125 or the second end 130, whichever is opposite from the end proximate to which the first hook 170 is affixed. Typically, the second hook 205 also is permanently affixed to the strap 105, although in some embodiments the second hook 205 may be removably affixed to the strap 105. The second hook 205 includes a gap 210 sized to pass at least one of the loops 135 and the mooring point 25 into a space 215 defined by the second hook 205, as best seen in
The first strap 105 optionally includes a tensioning mechanism 155 configured to reduce the length 120 of the first strap 105 to an effective length 120′ that is smaller than the length 120, as illustrated in
The assembly or system 100 optionally includes a strap, or support strap, 300, as illustrated in FIGS. 1 and 8-11. The support strap 300 is configured to couple the first strap 105 to the structure 20 at a location different from the mooring point 25. For example, in
The support strap 300 includes a first end 305 spaced apart from a second 310 by a length 315 of the support strap 300. In addition, the support strap 300 includes a first side 320 spaced apart from a second side 325.
The support strap 300 includes at least a support attachment device 350, such as a support hook affixed to the support strap at some point along the length 315 of the support strap 300. (As with the at least one attachment device 170 and the second attachment device 205, this specification generally discusses the support attachment device 350 within the context of a hook, although it will be understood that any of the above described alternatives of an attachment device and their equivalents fall within the scope of the disclosure and the claims.) In the embodiment illustrated, the support hook 350 is affixed to the support strap 300 proximate one of the first end 305 and the second end 310. In the embodiment illustrated in FIGS. 1 and 8-11, the support hook 350 is affixed to the second end 310 of the support strap 300. Typically, the support hook 350 is permanently affixed to the support strap 300, although in some embodiments the support hook 350 may be removably affixed to the strap 300. The support hook 350 includes a gap 355 sized to pass at least one of the loops 135 of the first strap 105, the loop 330 of the support strap 300, and the mooring point 25, 25′ into a space 360 defined by the hook 350, as best seen in
The support hook 350 optionally includes a latch 365 configured to selectively open to permit the various loops and mooring points to pass within the space 360. The latch 365 includes a biasing mechanism 370, such as a spring, to urge the latch 365 to close when not influenced by an external force.
The support hook 360 includes a support hook base 375 proximate to the first end 305 or the second end 310 to which the support hook 360 is affixed to the support strap 330, as best illustrated in
The support strap 300 includes at least one loop, or support loop, 330 affixed to the support strap 300 at a point along the length 315 of the support strap 300. In the embodiment illustrated, the support loop 330 is affixed to the support strap 300 proximate one of the first end 305 and the second end 310. As illustrated in FIGS. 1 and 9-11, the support loop 330 is affixed to the support strap 300 at the first end 305. The support loop 330 may be formed of the same material as the support strap 300 or from a different material. The support loop 330 typically includes a loop base 335 at which the support loop 330 is affixed to the support strap 300, typically through stitching, friction, heating, glue, and similar means of affixing the support loop 330 to the support strap 300. In some embodiments, the support loop 330 is affixed to the first side 320, while in other embodiments the support loop 330 is affixed to the second side 325 of the support strap 300. The support loop 330 is sized to pass at least one of the support strap 300, the support hook 350, the first strap 105, the first hook 170, and the second hook 205 through the support loop 330.
As like the first strap 105, the support strap 300 optionally includes a tensioning mechanism 385 configured to reduce the length 315 of the support strap 300 to an effective length 315′ that is smaller than the length 300, as illustrated in
As one of skill should understand from the above description and figures, the support strap 300 can act alone without the first strap 105 to couple and support a conduit 15 to the structure 20. In other words, the support strap 300 as described above is another embodiment of the first strap 105. When used alone, the support strap 300 can be wrapped at least partly around one or more conduits 15. Once so wrapped, the attachment device 350 or support hook 350 can be threaded through the support loop 330, thereby securing the conduit 15. The support strap 300 can then be coupled with the support hook 350 to the structure 15 via the mooring point 25. In such a way, the support strap 300 is considered the first strap 105, as described above.
The foregoing description of the systems and assemblies for storing conduits also encompass methods for storing a conduit 15 on a mooring 25 point affixed to a structure 20 on a crane 400. Such methods include obtaining a strap 105 configured to wrap at least partly around a conduit 15. The strap 105 includes a first side 110 and a second side 115 spaced apart from the first side 110. The strap 105 also includes a first end 125 and a second end 135 spaced apart from the first end 125 by a length 120. Optionally, at least one loop 135 is affixed to the strap 105, as is at least one attachment device 170. The at least one attachment device 170 is configured to be attached to at least one of the loop 135 and the mooring point 25. A user wraps the strap 105 at least partly around the conduit 15 and attaches the attachment device 170 to one of the loop 135 and the mooring point 25.
The present invention, in various embodiments, includes providing devices and processes in the absence of items not depicted and/or described herein or in various embodiments hereof, including in the absence of such items as may have been used in previous devices or processes, e.g., for improving performance, achieving ease and/or reducing cost of implementation.
The foregoing discussion of the invention has been presented for purposes of illustration and description. The foregoing is not intended to limit the invention to the form or forms disclosed herein. In the foregoing Detailed Description for example, various features of the invention are grouped together in one or more embodiments for the purpose of streamlining the disclosure. This method of disclosure is not to be interpreted as reflecting an intention that the claimed invention requires more features than are expressly recited in each claim. Rather, as the following claims reflect, inventive aspects lie in less than all features of a single foregoing disclosed embodiment. Thus, the following claims are hereby incorporated into this Detailed Description, with each claim standing on its own as a separate preferred embodiment of the invention.
Moreover, though the description of the invention has included description of one or more embodiments and certain variations and modifications, other variations and modifications are within the scope of the invention, e.g., as may be within the skill and knowledge of those in the art, after understanding the present disclosure. It is intended to obtain rights which include alternative embodiments to the extent permitted, including alternate, interchangeable and/or equivalent structures, functions, ranges or steps to those claimed, whether or not such alternate, interchangeable and/or equivalent structures, functions, ranges or steps are disclosed herein, and without intending to publicly dedicate any patentable subject matter.
The present patent document claims the benefit of priority to U.S. Provisional Patent Application No. 61/801,340, filed Mar. 15, 2013, and entitled “Assembly to Support a Conduit on a Crane,” the entire contents of which are incorporated herein by reference.
| Number | Date | Country | |
|---|---|---|---|
| 61801340 | Mar 2013 | US |
