1. Field of the Invention
The present invention relates to a structure, e.g., a metal or steel structure, for supporting radios, antennas and/or similar equipment on a tower.
2. Description of the Related Art
Background art can be seen in U.S. Pat. Nos. 5,920,291, 7,086,207, 7,113,145, 7,466,286 and U.S. Published Patent Application No. 2007/0261355, each of which is herein incorporated by reference.
With increased demand for more wireless communication, the number of radio and antenna units that a tower traditionally supports has increased and is expected to continue to increase. New towers will need to be designed to support greater numbers of antenna and radio units, while existing towers are retrofitted to support more units and effort is made to fully utilize space available on the towers.
To meet this increased demand, the Applicant has developed a new high capacity sector frame mount, capable of supporting at least about 1200 lbs. (at least about 300 lbs. per antenna pipe) with a reduced overall EPA (Effective Projected Area) and reduced weight that meets ANSI/TIA 222 G-2.
Current antenna mounts are being over loaded with equipment due to increased demand for more bandwidth. More equipment is being mounted on existing structures causing increased stress to tower legs and in some cases sector frame mounting failures. The present invention allows for more equipment weight to be mounted, but offers less EPA, overall weight reduction, fewer parts, and easier installation than other mounts. With reduced weight and EPA, end users can expand their networks without increased tower cost by not having to use more vertical space on the tower to mount additional equipment.
The present invention may be applied to existing or new outside towers in the cellular communication field and/or other types of communication fields. Various aspects of the present invention offer advantages over the state of the art, such as one or more of the following:
1. The use of two one-piece formed structural tubular frames that eliminate the assembly of multiple parts and attach to a tower leg clamp.
2. Face attachment transition angle brackets that selectively attach to the one-piece frame using U-bolts that allow various size face frame antenna mounts to be attached which selectively fix the position for the standoff legs with respect to the frame face.
3. The one-piece tubular frame allows reduced overall weight by eliminating additional parts to be assembled in the field, thereby reducing the amount of time required to install the frame structure.
4. The one-piece tubular frame with reduced parts has an overall lower EPA and reduces exposure of overall wind loads to the structure, which will allow the customer to install more equipment on the structure.
5. The structural tubular frames are attached to an upper and lower structurally welded boxed tower leg clamp, selectively securing the frame attachment to a tower leg bracket with azimuth and taper adjustment. The upper tower leg bracket provides selectively pivotally movable azimuth via a 2 point pivot and taper.
Various aspects of the invention provide one or more of the following benefits relative to the state of the prior art in outside wireless telecommunication cell sites:
Further scope of applicability of the present invention will become apparent from the detailed description given hereinafter. However, it should be understood that the detailed description and specific examples, while indicating preferred embodiments of the invention, are given by way of illustration only, since various changes and modifications within the spirit and scope of the invention will become apparent to those skilled in the art from this detailed description.
The present invention will become more fully understood from the detailed description given hereinbelow and the accompanying drawings which are given by way of illustration only, and thus, are not limits of the present invention, and wherein:
The present invention now is described more fully hereinafter with reference to the accompanying drawings, in which embodiments of the invention are shown. This invention 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 invention to those skilled in the art.
Like numbers refer to like elements throughout. In the figures, the thickness of certain lines, layers, components, elements or features may be exaggerated for clarity. Broken lines illustrate optional features or operations unless specified otherwise.
The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the specification and relevant art and should not be interpreted in an idealized or overly formal sense unless expressly so defined herein. Well-known functions or constructions may not be described in detail for brevity and/or clarity.
As used herein, the singular forms “a”, an and the are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms “comprises” and/or “comprising,” when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. As used herein, the term “and/or” includes any and all combinations of one or more of the associated listed items. As used herein, phrases such as “between X and Y” and “between about X and Y” should be interpreted to include X and Y. As used herein, phrases such as “between about X and Y” mean “between about X and about Y.” As used herein, phrases such as “from about X to Y” mean “from about X to about Y.”
It will be understood that when an element is referred to as being “on”, “attached” to, “connected” to, “coupled” with, “contacting”, etc., another element, it can be directly on, attached to, connected to, coupled with or contacting the other element or intervening elements may also be present. In contrast, when an element is referred to as being, for example, “directly on”, “directly attached” to, “directly connected” to, “directly coupled” with or “directly contacting” another element, there are no intervening elements present. It will also be appreciated by those of skill in the art that references to a structure or feature that is disposed “adjacent” another feature may have portions that overlap or underlie the adjacent feature.
Spatially relative terms, such as “under”, “below”, “lower”, “over”, “upper”, “lateral”, “left”, “right” and the like, may be used herein for ease of description to describe one element or feature's relationship to another element(s) or feature(s) as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is inverted, elements described as “under” or “beneath” other elements or features would then be oriented “over” the other elements or features. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the descriptors of relative spatial relationships used herein interpreted accordingly.
With reference to
A second one-piece continuous bent tube frame 23 has a third portion 25 attached to the first tower mounting bracket 13, and a fourth portion 27 attached to the second tower mounting bracket 15. The first portion 19 of the first bent tube frame 17 and the third portion 25 of the second bent tube frame 23 are located side-by-side and are both clamped to the first tower bracket 15 by a same first clamp, such as a first U-bolt 95, more preferably by two first U-bolts 95, spaced apart by one or more inches. The second portion 21 of the first bent tube frame 17 and the fourth portion 27 of the second bent tube frame 23 are located side-by-side and are both clamped to the second tower bracket 15 by a same second clamp, such as a second U-bolt 97, more preferably by two second U-bolts 97, spaced apart by one or more inches.
First and second equipment brackets 29 and 31 are attached to fifth and sixth portions 33 and 35 of the first bent tube frame 17. Third and fourth equipment brackets 37 and 39 are attached to seventh and eighth portions 41 and 43 of the second bent tube frame 23.
In the embodiment of
In the embodiment of
As illustrated in
As best seen in
Likewise, the second and fourth equipment brackets 31 and 39 each have a frame face 91 for attachment to the first bent tube frame 17 or 17′ and second bent tube frame 23 and 23′, respectively, and the equipment face 93 for attachment to equipment, e.g., the antenna frame 69. The frame face 91 is orthogonal to the equipment face 93 and extends in a direction D which intersects a plane containing the equipment face 93 at an angle of approximately 10 to 80 degrees, more preferably at an angle of approximately 25 to 65 degrees, such as at an angle of approximately 45 degrees.
As best seen in
The fifth portion 33 of the first frame 17 or 17′ resides along a first segment 125 of the first frame 17 or 17′, which extends along a first axis A1. The thirteenth portion 117 of the first frame 17 or 17′ resides along a second segment 127 of the first frame 17 or 17′, which extends along a second axis A2. The first axis A1 is substantially perpendicular to the second axis A2. The sixth portion 35 of the first frame 17 or 17′ resides along a third segment 129 of the first frame 17 or 17′, which extends along a third axis A3. The fourteenth portion 119 of the first frame 17 or 17′ resides along the second segment 127 of the first frame 17 or 17′, which extends along the second axis A2. The third axis A3 is substantially parallel to the first axis A1, and hence substantially perpendicular to the second axis A2.
The structure and attachments of the third and fourth equipment brackets 37 and 39 and the second frame 23 or 23′ may be in the same fashions and orientations, as described in the above paragraphs.
Tube diameters of the first and second frames 17, 17′, 23 or 23′ may be between 1 to 3 inches, such as 1.5 to 2.5 inches, more preferably about 1.9 to 2.4 inches. The clamps have been illustrated as U-bolts 95, 97. However, the clamps may be formed in other manners, such as a plate or L-shape member using bolts to apply a frictional clamping force, or a strap which may be tightened to apply a frictional clamping force. The first and second frames 17, 17′, 23 or 23′ in
The invention being thus described, it will be obvious that the same may be varied in many ways. Such variations are not to be regarded as a departure from the spirit and scope of the invention, and all such modifications as would be obvious to one skilled in the art are to be included within the scope of the following claims.
This application claims the benefit of U.S. Provisional Application No. 62/104,898, filed Jan. 19, 2015, which is herein incorporated by reference.
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Number | Date | Country | |
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20160211569 A1 | Jul 2016 | US |
Number | Date | Country | |
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62104898 | Jan 2015 | US |