The invention generally relates to a multifunctional reel carrier, spoil material handling container device for continuously trenching and laying cable and/or innerduct/microduct, and a method of using the device to continuously trench and lay cable and/or innerduct/microduct. The invention further generally provides a method and device for providing a temporary and permanent optical fiber network.
Conventional devices for the trenching and laying cable or duct cannot be used continuously. The micro trencher saw usually creates a pile of spoil (dirt, asphalt, concrete, etc.) alongside the formed trench and the trench must be cleaned before laying the cable in the trench. The pile of spoil must then be removed. A fill, also referred to as cement or grout, is inserted into the trench on top of the cable or innerduct/microduct. Large industrial vacuum trailers have been used to remove the piled up spoil. However, many hours are wasted by having to dump the spoil from the trailers.
There is a great need for a device that can be used to continuously remove and in some instances recycle the spoil to in effort to increase the speed for placing the cable and/or innerduct/microduct and to reduce the down time of roadways, and also to reduce production costs.
While the Vacuum truck concept is known in the industry, there is no current vacuum system that allows one to use a second vacuum or one vacuum to expel the cutting spoils into a cement/zim mixer or container allowing for the material to be recycled.
Installing new optical fiber networks to a location is expensive and time consuming. There is a great need for faster and less expensive installation of optical fiber networks.
An objective of the invention is to provide a device to continuously form a microtrench, remove and store/recycle the spoils and place cable and/or innderduct/microduct.
The objectives of the invention can be achieved by a multifunctional reel carrier, spoil material handling container device constructed for continuously trenching, laying a cable or innerduct/microduct, and filling the trench comprising:
The objectives can further be obtained a method of laying cable or innerduct/microduct comprising:
Objectives of the invention can be further met by a method of providing a temporary and permanent optical fiber network comprising:
In the following description, for purposes of explanation and not limitation, specific details are set forth, such as particular networks, communication systems, computers, terminals, devices, components, techniques, data and network protocols, software products and systems, operating systems, development interfaces, hardware, etc. in order to provide a thorough understanding of the present invention with reference to the attached non-limiting Figures.
However, it will be apparent to one skilled in the art that the present invention may be practiced in other embodiments that depart from these specific details. Detailed descriptions of well-known networks, communication systems, computers, terminals, devices, components, techniques, data and network protocols, software products and systems, operating systems, development interfaces, and hardware are omitted so as not to obscure the description.
As shown in
To facilitate vacuuming of the spoil 12 from the container 104, different methods to move the spoil 12 within the container 104 can be utilized. Examples of suitable methods include, but are not limited to a sloping floor 119 or mechanical moving systems 117 such as augers or conveyors or a tilting mechanism such as a dump body 129. Alternatively, an inlet moving device 123 for moving an inlet hose 127 within the container 104 can be utilized. In another embodiment the outlet 112 can be connected to the inlet 115 using a connection such as a valve.
As shown in
Any suitable micro trencher 2 can be utilized in the present invention. Non-limiting examples of suitable micro trenchers include those made and sold by Ditch Witch, Vermeer, and Marais. A micro trencher is a “small rock wheel” specially designed for work in rural or urban areas. The micro trencher 2 is fitted with a cutting wheel 10 that cuts a microtrench 11 with smaller dimensions than can be achieved with conventional trench digging equipment. Microtrench widths usually range from about 6 mm to 130 mm (¼ to 5 inches) with a depth of 500 mm (20 inches) or less. Other widths and depths can be used as desired. For example, up to 30 inches deep can be used.
With a micro trencher 2, the structure of the road, sidewalk, driveway, or path is maintained and there is no associated damage to the road. Owing to the reduced trench size, the volume of waste material excavated is also reduced. Micro trenchers 2 are used to minimize traffic or pedestrian disturbance during cable laying. A micro trencher 2 can work on sidewalks or in narrow streets of cities, and can cut harder ground than a chain trencher, including cutting through for example but not limited to solid stone, concrete, and asphalt. The term ground as used herein includes, soil, asphalt, stone, concrete, grass, dirt, sand, brick, cobblestone, or any other material the trench 11 is cut into and the optical fiber buried within.
As shown in
A conventional vacuum truck can be modified to remove spoil 12 from the container 104 by adding the intake system 113, adding an outlet 116 to fill device 200, and modifying the vacuum device 130 and/or adding an additional vacuum device to transfer spoil 12 from the saw 10 to the container 104 and to the fill device 200.
The reel loader 104 includes at least one reel holder 120 constructed to hold a reel of cable or innerduct/microduct 121. The reel loader/carrier 100 preferably includes a plurality of reel holders that can be adjusted in height 143 and moved manually or mechanically/hydraulically from front to back, back to front, side to side, or up and down 120. To reduce the overall height of the device, the reel holders 120 can be mounted on a separate trailer 125 that is towed by the truck 124.
The first vacuum device 110 and second vacuum device 114, and vacuum device 130 are constructed to suck up and expel the spoil. Commercial examples of suitable vacuum devices 110, 114, 130 are those made by SCAG Giant Vac., DR Power, and Billy Goat. The inlets 111, 115, 130 and outlets 112, 116 of the vacuum devices can be conventional hoses, such as 4 to 16 inch diameter hoses. The vacuum devices 110, 114 can also have a water misting system 148 that is attached to a 150 water tank. The misting system 148 can be engaged manually or electronically programmed to emit a water mist inside the container 104 minimizing dust. The vacuum devices 110, 114, 130 can run on gas, diesel, electric or solar power. The vacuum devices 110, 114, 130 can have a steel impeller inside that will allow for any debris to be pulverized or chopped into smaller pieces. The vacuum devices 110, 114, 130 can be mounted on a truck or can be on a trailer and hitched to a vehicle for transportation. The vacuum devices 110, 114, 130 can be hooked up directly to a vehicle gas tank in order to eliminate a separate fueling mechanism. The vacuum fuel tank can have its own independent gas tank fueling mechanism. If one vacuum is used to do both intake and outtake, a secondary outtake valve 156 can be used for the spoil to be expelled. The intake valve 154 may need to be closed or shut off so no spoils will be expelled out of the saw connection. The intake system 113 can also have a valve 152 for controlling the amount of spoil 12 to be removed from the container 104. The vacuum can have a CFM (Cubic Feet per Minute) throttle allowing the intake and outtake speeds to be adjusted based on the operators requirements.
The present invention also relates to a method of laying cable and/or innerduct/microduct 140. An exemplary method is shown in
A further exemplary method is shown in
One or more spoil transport devices are utilized in the present invention to transfer spoil from the micro trencher 2, and optionally also the trench 11, and move the spoil 12 to first container 104, fill device 200, trucks, and/or any other devices utilized in the present invention.
A particularly preferred fill 212 comprise bonding agent comprising a polymer additive, concrete mixture and a coloring agent to complete the micro trench or shallow trench backfilling operation. The spoil 12 can be used as part of the concrete mixture. A commercial example of the bonding agent is SC polymer by SureCrete, which can be found at http://www.surecretedesign.com/product/liquid-concrete-polymer/. The bonding agent can be added to the concrete backfill mixture in conjunction with substituting sand and/or spoil for conventional gravel aggregate to allow for use in the micro trench or shallow narrow trench application. By altering the slump or viscosity of the concrete by altering the water content we were able to control the flow rate and application of the mixture into the narrow trench. There are other commercially available bonding agents that will perform similar the product above. Bonding agents for concrete are well-known in the art and any desired bonding agent can be utilized.
One of ordinary skill in the art will be able to adjust the viscosity of the bonding agent/concrete mixture fill 212 so that the fill 212 can flow into the shallow narrow trench, such as less than 2″ in width and from 2″ to 20″ in depth.
In comparison, previous to the bonding agent/concrete mixture, we used concrete mixtures or asphalt mixtures as a the primary backfill in the trench and then a chemical compound was utilized over top of the mixture to seal the roadway from water intrusion. By using the concrete with the bonding agent in the trench we have eliminated the need for multiple passes as the bonding agent will bond to the trench and provide the necessary seal to the roadway. The chemical compounds utilized previously in sealing the trenches are costly, slow to deploy in some cases, and was required installation crews to complete multiple steps in completing an operation. Furthermore, by coloring the bonding agent/concrete mixture to match the roadway color we have further reduced the cost of installation by completing the backfill in once step and the coloring is similar to that of an existing roadway. The bonding agent provided the adhesion to the existing surface which in the past was completed with different much more expensive chemicals. The bonding agent/concrete mixture allows for the installation of a cement based product with adhesive characteristics. Filling a microtrench in one step using a color matched bonding agent/concrete mixture instead of multiple steps has not been done heretofore.
By pumping or using commercially available concrete installation tools, substituting sand and/or spoil for conventional stone aggregate, regulating the viscosity of the concrete product by adjusting the water content, adding the coloring agent to the concrete, and adding a bonding agent, we have developed a method of completing the shallow narrow trench that is far faster and significantly more cost effective than prior solutions that are utilized in the industry. This allows for significant cost savings compared to other methods of backfilling a shallow narrow trench.
The Figs. show exemplary devices for practicing the claimed invention that are now being used by the inventor to install optical fiber cable for Google. The present invention allows surprisingly far faster and more efficient installation of the optical fiber, for example multiple crews installing optical fiber cable for Google are installing from 4000 to 6000 feet of optical fiber cable per day. We believe up to 7000 feet per day can be achieved. Conventional methods only allow about 1000 feet per day. The present invention causes far less disruption of roads and pathways. The present invention can also return the roads and pathways to their original state with the same colored fill. The present invention is not limited to the order of the devices and methods illustrated in the Figs. and any desired order of devices and steps can be utilized to practice the claimed invention.
In another embodiment, a marker line 400 as shown in
In another embodiment of the invention, a temporary fiber optic cable network can be laid out on the surface and utilized as a temporary optical fiber network. The temporary optical fiber network can be protected with any desired protection device, such as conduit, tarps, tape or other type of cover, that can be skid proof, and constructed for outdoor use which can withstand foot and vehicle traffic. For example, the tape can be heated to activate an adhesive, or peelstick, silicone, epoxy glue or any desired type of adhesive. The surface can be a street, sidewalk, driveway, asphalt, concrete, dirt, interior floor, or any other desired surface.
As shown in
The reel 504 and loose coil 506 allows the fiber cable 502 to be deployed to any desired length and also to be recoiled if necessary. The second end connector 516 can be constructed so that the second end connector 516 can remain connected while the reel 504 is rotated, similar in design to the Cam plex reels. Alternatively, the second end connector 516 can be disconnected while the reel 504 is rotated so that the connector 516 can rotate with the reel 504. The loose coil 506 or wound reel 504 can be installed within a box 520. The box 520 can contain multiple reels 504 or coils 506. The box 520 can be formed from plastic, metal, galvanized, stainless steel, concrete, fiberglass, rubber or any other suitable material. The reels 504 can be mounted on bracket(s) or rod(s) 522 that can be placed from side to side (horizontal) or from bottom to top (vertical). Spacers can be placed in between the reels so they can spin independently of each other. The box 520 can have any desired shape, such as tubular, square, triangular, rectangular or any other desired shape. The box 520 can have a lid or door that can be locked or otherwise secured. The box 520 can be mounted on a roller. The box 520 can be buried, mounted pole, or secured in any desired location.
The box 520 can have one or more optical fiber extenders, such as reels 504 or loose coils 506, for input 534 to allow optical fiber 502 to be unwound for a temporary or final installation. The box 520 can have one or more optical fiber extenders, such as reels 504 or loose coils 506, for output 532 to allow optical fiber 502 to be unwound for a connection(s) to and additional box(es) 520 for temporary or final installation. The box 520 can have one or more optical fiber extenders, such as reels 504 or coils 506, for fiber drops 530 to allow optical fiber 502 to be unwound for connections to customers for temporary or final installation.
After using the temporary optical fiber network 500, once the desired location of the optical fiber 502 and box(s) 520 are known, the optical fiber network can be made permanent by removing the protection device 512, creating slack in the optical fiber 502 by uncoiling the optical fiber from the extenders in the box 520, creating a microtrench as described herein, burying the optical fiber and covering the optical fiber with a fill, and permanently mounting or burying the box(s) 520.
Fiber optic converter/extenders on a 1000 foot reel are known. Commercial examples are cmx-tacngo-sdi tac-n-go 3G sdi fiber optic converter/extender, TAC1 Simplex LC fiber optic tactical cable reel, and Tac-N-Go fiber optic by Camplex. www.camplex.com. These are field deployable optical fiber reel systems. Corning systems also provides fiber optic convert/extenders at any desired length, any number of connectors, such as 1 strand to 864 strands, usually from 6 strands to 432 strands, and the fiber optic cables can be connectorized in field or already have a connector applied. The known reels can be utilized in the present box 520 and permanently mounted.
The temporary taped optical fiber installation can be utilized to provide an optical fiber network 500 to a desired user, such as a neighborhood, business, sporting event, military complex, or any other desired location. Once the desired location of the optical fiber is determined, slack can be provided in the optical fiber 502, the tape 512 removed, a nanotrench or microtrench 11 can be formed, the optical fiber 502 installed in the trench 11, and then the trench 11 can be filled 212 using any desired method, such as the methods described herein above. Instead of the microtrench 11, the optical fiber can be mounted in conduits, drills, core drill, hung, walls, hydrovac, and/or directional drill. If the optical fiber 502 is on a reel 504 within the box 520, the box 520 and reel 504 can be permanently mounted. In addition to the fill 212 described above, the buried fiber cable 502 can be covered with self leveling grout, caulking, asphalt, tar, SL1, cold patch, concrete, sterling Loyd, of other fill products.
The present invention includes a system, method and device for connecting a fiber optic feeder cable 502, by the second connector 516, that supplies one or more signal types, such as television (TV), data (e.g., internet access), and telephone (fixed wireline or cellular), to a plurality of units (offices or dwellings) in a multi-unit building. In some example embodiments, the device may be used to connect a new feeder line 502 to existing internal wiring (twisted pair, coaxial cable, etc.). In addition or alternatively, the device can be used to connect a feeder line 502 to a wifi, local network, telephone network, or any other desired connection within the building. The invention can also be used to supply a neighborhood. For example, if coax is already connected to an existing neighborhood, the coax can be connected to cards in a box and an optical fiber 502 can be inputted into the box so that coax does not have to be replaced saving considerable time and expense. In this manner the box can be placed on a telephone pole or near an optical fiber connection so that and optical fiber 502 input can be connected to the multiple existing coax cables.
Specifically, in many buildings it may be cost prohibitive and/or impractical to run fiber 502 to each unit. In addition, the various owners of units may want to purchase services that require different drop connections (i.e., the wiring (twisted pair, fiber, coax, etc.) that connects the unit to the feeder line 502. In addition, it may be more economical to use an existing drop connection (e.g., twisted pair) for some services (e.g., telephone). For example, one dwelling unit may purchase only telephone service (which may employ a twisted pair drop connection), another dwelling unit may purchase telephone and television service (which may employ a coaxial cable or coax cable and twisted pair drop connection), and yet another dwelling unit may purchase only internet access (which may employ a fiber conductor or coaxial cable drop connection). Embodiments of the present invention may be used to service buildings to supply service to units using any of various media including twisted pair, coaxial cable, fiber optics, CAT-5 (Ethernet), and/or others. The disclosure in my previous U.S. Pat. No. 9,485,468 is incorporated herein by reference.
While the device for cutting a microtrench device is preferably utilized to bury the temporary optical fiber network, any trenching device can be utilized. For example, the trench can be ⅛ inch to 1.5 inch wide and up to 6 inches deep when using the microtrenched, or 0.75 to 3 inches wide, and as deep as 24 inches for larger trenching devices.
It is to be understood that the foregoing illustrative embodiments have been provided merely for the purpose of explanation and are in no way to be construed as limiting of the invention. Words used herein are words of description and illustration, rather than words of limitation. In addition, the advantages and objectives described herein may not be realized by each and every embodiment practicing the present invention. Further, although the invention has been described herein with reference to particular structure, materials and/or embodiments, the invention is not intended to be limited to the particulars disclosed herein. Rather, the invention extends to all functionally equivalent structures, methods and uses, such as are within the scope of the appended claims. Those skilled in the art, having the benefit of the teachings of this specification, may affect numerous modifications thereto and changes may be made without departing from the scope and spirit of the invention.
Number | Date | Country | |
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62409486 | Oct 2016 | US | |
62432428 | Dec 2016 | US | |
62458370 | Feb 2017 | US | |
62537723 | Jul 2017 | US | |
62551311 | Aug 2017 | US | |
62554562 | Sep 2017 | US |