The present invention relates to utility equipment used in the commercial electrician trades, and more particularly to equipment used to assist in storing, transporting and dispensing wire or cable products.
Large electrical installation jobs often requiring running wire or cable long distances through narrow or overhead passageways. The products being installed range broadly from common, solid or stranded copper electrical wire, speaker wires, coaxial cable, or complicated, multi-functional and braided cables that may transfer multiple types of signals or power. While some of these may be referred to as wires vs. cables, for simplicity the term wire will be used to reference all such varieties herein. Wire is typically installed through long pieces of conduit requiring it to be inserted through and then pulled along from the far end, which may be many dozens of feet away, around a corner, etc. Accordingly, it is necessary for the source of the wire (typically a spool of some sort) to remain fixed at a first location while the wire is paid out by being pulled from a second location. Once these distances get too far apart, tension builds and it becomes difficult to pull wire. Eventually, the installer must stop, install a junction box or the like, reposition the wire source, and start fresh.
Changes in direction (such as around corners, up or down walls, or around objects) in the path of the wire being installed increases the tension on the lines as it is being pulled through and drastically shortens the distance that an installer can work from the wire source. Thus, a good installer will design the routing to reduce the number of directional changes where possible. One directional change that is ideally avoidable is an immediate one from the payout source. Thus, it is desirable for the wire source to pay out in the direction the installer is working, adding as little tension to the line as possible. It is also obviously desirable for the wire source to stay put. If it moves when the wire is pulled, it can quickly get into a configuration where there is added tension from the wire source, or can lead to other calamities.
Wire traditionally comes wound on hollow spools between two round hubs. The spool and hubs form a reel that must be fixed in some manner to avoid rolling. A rod may be inserted through the spool around which the reel rotates to dispense the wire. However, this adds to installation time when the reels must be placed on and removed from the rod and whatever mechanism is holding it in place. There is also often a need to install multiple gauges or types of wire at once, which may be limited by the number of fixed rod stands available. Another option is for the reel to be placed in a dispensing box (typically cardboard or the like), such as shown in U.S. Pub. 2007/0295847 to Weck. This allows the wire to be stacked and transported efficiently, and prevents it from rolling. But the boxes can still scoot along a floor surface when the wire is pulled out if the box is not mounted in place.
Some wire dispensing systems have been designed specifically for cable or wire wound on reels and placed inside a carton or box. For example, U.S. Pat. No. 8,387,099 to Galgano describes a manual transporter or cart with axial inserts for insertion into entry holes of a wire reel, thereby axially coupling the central rod to the cart. While such a cart can accommodate several boxes of wire, it can only accommodate such boxes specifically sized to fit on the cart. When one box is exhausted, installation may need to halt because several boxes may need to be removed from the central mounting rod to allow a new box to be mounted. Also, as discussed further below, wire is now coming packaged in new varieties that cannot be accommodated by such a cart because there is no central hole or spool for mounting. Furthermore, the wire pays out in the Galgano cart only in the direction where the holes are cut in the boxes based on way the cart is facing.
Using such prior art systems, if an installer needs to change direction and install down a different hallway, for example, the cart must be manually turned. If two installers are working in opposite directions simultaneously, the wire will be tensing against the box in at least one of those directions at the payout source. Finally, where boxes are stacked on top of each other, the wire may have to be routed through several other boxes in order to break free of the cart assembly. All of this adds the chance for friction and tension to build in the line, reducing the operating distance and efficiency of the dispensing system. Accordingly, there is a need for a wire dispensing cart that helps reduce line tension and increase working distance, does not require constant repositioning, and can accommodate cable bags and the like.
Embodiments of the present invention include a hand cart for dispensing wire comprising a cart body extending vertically between a bottom portion and a top portion. The hand cart includes a plurality of wheels connected to the bottom portion of the cart body, where each wheel may have a rotatable caster. The hand cart also includes at least a first rack supported by the cart body, the rack configured to house a plurality of wire containers. In addition, the hand cart includes a dispensing cone for directing wire and avoiding the buildup of line tension as it is pulled out of the wire containers. Moreover, the hand cart includes a brake assembly connected to the bottom portion of the cart body, the brake assembly having an engaged configuration in which the assembly extends to a surface on which the wheels rest and engages the surface to prevent the hand cart from changing location, but allowing it to be pivoted about the brake assembly so as to orient the cart in the direction of pull from installation.
While certain features and embodiments are referenced above, these and other features and embodiments of the present invention will be, or will become, apparent to one having ordinary skill in the art upon examination of the following figures and detailed description. It is intended that all such additional embodiments and features included within this description, be within the scope of the present invention, and be protected by the accompanying claims.
The present invention can be better understood with reference to the following drawings. The components in the drawings are not necessarily to scale, emphasis instead being placed upon clearly illustrating the principles of the present invention. In the drawings, like reference numerals designate corresponding parts throughout the several views.
The description that follows describes, illustrates and exemplifies one or more particular embodiments of the present invention in accordance with its principles. This description is not provided to limit the invention to the embodiments described herein, but rather to explain and teach the principles of the invention in such a way to enable one of ordinary skill in the art to understand these principles and, with that understanding, be able to apply them to practice not only the embodiments described herein, but also other embodiments that may come to mind in accordance with these principles. The scope of the present invention is intended to cover all such embodiments that may fall within the scope of the appended claims, either literally or under the doctrine of equivalents.
One limitation of the newer cable bags is that they do not provide a central hole for mounting. Thus, some other mechanism (such as a cage) must be used to hold them in place as they pay out longer distances. Notably, the Galgano prior art wire dispensing hand cart discussed above, and others like it that require a central hole for mounting on a rod, cannot accommodate these new wire containers. As discussed below, the present invention overcomes this limitation and can simultaneously facilitate both the newer cable bags and the traditional reel-in-box systems.
As shown, the present invention can accommodate racks 110 having two bins 114 (
In some embodiments, the hand cart assembly 100 includes at least two racks for housing cable containers 112. For example, as shown in
As shown perhaps best in
In addition, the hand cart assembly 100 includes a dispensing cone 118 for directing wire 120 as it is pulled out of the wire containers 112, as shown in
The hand cart assembly 100 can further comprise a stanchion 122 for supporting the dispensing cone(s) 118. In some embodiments, the stanchion 122 that hold the cones 118 can be adjustable in height, angle, and/or length, to allow further customization of the hand cart assembly 100 to meet the operator's needs. The dispensing cones 118 can be spaced apart from each other to allow cables 120 from up to four different cable bags 112 to be directed through each cone 118. For example, the dispensing cone 118 can direct wire 120 from two containers 112 on the top rack 115 and two containers (not shown) on the bottom rack 116, such as shown in
In embodiments, the hand cart assembly 100 also includes a brake assembly 124 connected to the bottom portion 104 of the cart body 102, as shown in more detail in
For example, as shown in
The mechanics and operation of the brake assembly 124 will now be described in more detail. As shown in
For example, pressing the foot pedal 138 downwards can cause the telescoping pole 136 to extend further out of the sleeve 137 and towards the surface 127, until the base 131 engages the surface 127, as represented in
Preferably, the brake assembly 124 is positioned between an adjacent pair of the wheels 108, such as, for example, rear wheels 108a, as shown in
For example, as shown in
In embodiments, during the engaged configuration 134 of the brake assembly 124, the front wheels 108b remain on the surface 127 and are free to move or rotate along the surface 127, but only about the point at which the brake assembly 124 engages the surface 127 and as allowed by the swivel portion 128. As shown in
Configuring the adjacent rear wheels 108a to hover above the surface 127 during the engaged configuration 134 of the brake assembly 124 allows the hand cart assembly 100 to smoothly and easily swivel about the braking point using the swivel portion 128. In other embodiments, the rear wheels 108a may remain on the surface 127 during the engaged configuration 134 of the brake assembly 124. In such cases, the hand cart assembly 100 may still swivel about the braking point using the swivel portion 128, but with at least slightly greater resistance (e.g., from the rear wheels 108a).
In embodiments, the hand cart assembly 100 can further include one or more shelves 150 for storage of tools and/or additional cable containers, as shown in
Accordingly, it has been described how the present invention provides versatility, flexibility and vast improvement over the prior art. In addition to its various configurations, it works to reduce line friction and increase the effective working distance for the installers, while reducing or eliminating the need to reposition the cart or change out wire containers by sliding them on and off a support rod. It will be understood by those skilled in the art that various changes may be made and equivalents may be substituted without departing from the scope of the novel and non-obvious techniques disclosed in this application. Therefore, it is intended that the novel teachings of the present invention not be limited to the particular embodiment disclosed, but that they will include all embodiments falling within the scope of the appended claims.
This non-provisional patent application claims priority to U.S. Provisional Patent App. No. 62/168,676 filed on May 29, 2015 and 62/195,438 filed on Jul. 22, 2015. These provisional applications are incorporated herein by reference in their entirety.
Number | Name | Date | Kind |
---|---|---|---|
3587840 | Hultberg | Jun 1971 | A |
3680810 | Hultberg | Aug 1972 | A |
4369881 | Ditchfield | Jan 1983 | A |
4431144 | Foster | Feb 1984 | A |
4771889 | Bauer | Sep 1988 | A |
5086919 | Toral et al. | Feb 1992 | A |
5316232 | Lambert, Jr. | May 1994 | A |
5501325 | Mehltretter | Mar 1996 | A |
5509671 | Campbell | Apr 1996 | A |
5529186 | Bass | Jun 1996 | A |
5642812 | Hale | Jul 1997 | A |
5687928 | Lassiter | Nov 1997 | A |
5732899 | Wells | Mar 1998 | A |
6003667 | Barnett et al. | Dec 1999 | A |
6116533 | Elder | Sep 2000 | A |
6270094 | Campbell | Aug 2001 | B1 |
6422504 | Elder | Jul 2002 | B1 |
6523776 | Elder | Feb 2003 | B1 |
6698682 | Roderick | Mar 2004 | B1 |
6834827 | Burkitt | Dec 2004 | B2 |
7204452 | Wilkinson | Apr 2007 | B2 |
7204509 | Vanderminden | Apr 2007 | B1 |
7243876 | Robison | Jul 2007 | B2 |
7320445 | Eastwood | Jan 2008 | B2 |
7784729 | Hope | Aug 2010 | B1 |
7931227 | Oudekerk | Apr 2011 | B1 |
7976031 | Duarte | Jul 2011 | B2 |
8016222 | Galgano | Sep 2011 | B2 |
8099815 | Kostigian | Jan 2012 | B2 |
8136753 | Galgano et al. | Mar 2012 | B2 |
8322690 | Cathlina | Dec 2012 | B2 |
8387099 | Perlman et al. | Feb 2013 | B2 |
8459585 | Elder | Jun 2013 | B1 |
8474744 | Jacquart | Jul 2013 | B2 |
8887033 | Varnica et al. | Nov 2014 | B1 |
9370969 | Kroening | Jun 2016 | B2 |
D800406 | Runzel | Oct 2017 | S |
D800407 | Runzel | Oct 2017 | S |
9884738 | Arce | Feb 2018 | B1 |
20010030257 | Fletcher | Oct 2001 | A1 |
20010030258 | Lenski | Oct 2001 | A1 |
20020063184 | Walker | May 2002 | A1 |
20030122027 | Bootsman | Jul 2003 | A1 |
20050285361 | Gregory | Dec 2005 | A1 |
20060038053 | Giovannoni | Feb 2006 | A1 |
20060096047 | Kostigian | May 2006 | A1 |
20070120003 | Grant | May 2007 | A1 |
20070295847 | Weck et al. | Dec 2007 | A1 |
20080048063 | Wells | Feb 2008 | A1 |
20080135669 | Kostigian | Jun 2008 | A1 |
20120048988 | Pulver | Mar 2012 | A1 |
20120312390 | Olson | Dec 2012 | A1 |
20120318939 | Galgano | Dec 2012 | A1 |
20130026120 | Johnson | Jan 2013 | A1 |
20140326625 | Copp et al. | Nov 2014 | A1 |
Number | Date | Country |
---|---|---|
1564175 | Jun 2012 | EP |
2031834 | Apr 1980 | GB |
2000044661 | Aug 2000 | WO |
2002085753 | Oct 2002 | WO |
Number | Date | Country | |
---|---|---|---|
20160347573 A1 | Dec 2016 | US |
Number | Date | Country | |
---|---|---|---|
62168676 | May 2015 | US | |
62195438 | Jul 2015 | US |