Patent ID: 12188219

DETAILED DESCRIPTION OF THE INVENTION

As noted above, the present disclosure presents a portable restroom system for use in a multilevel building under construction, which comprises:a plurality of portable restrooms; anda pipe and a water line that each extend substantially vertically through the multilevel building,wherein a first portable restroom is located on one level or floor of the building, and a second portable restroom is located on another level or floor of the building,wherein the pipe and the water line each have a plumbing connection (e.g., fittings such dump valve assemblies such as a ball valve/dump valve and water line spigots or faucets) located on each level or floor of the building with one or more portable restrooms,wherein the pipe also has a plumbing connection on a ground or lower floor level of the building allowing for fluid access to a vacuum system of a sanitation truck having a power take-off device (PTO), wherein the vacuum system is powered by the truck's PTO.

Where moving a portable restroom above the ground level of a building under construction can be challenging due to the weight of the portable restroom, the portable restroom for use in the present invention is preferably either equipped with a crane handle, allowing it to be hoisted by a crane, is provided with wheels, or is positioned on a wheeled pallet or dolly, allowing it to be easily moved onto and off a construction or service elevator.

One notable advantage of the present invention is that it allows for the PTO of a sanitation truck (e.g., a transmission-mounted PTO) to be controlled remotely. This allows the truck's vacuum system to be operated intermittently or only as needed, thereby limiting the high levels of noise from the exhaust airflow, which is disruptive to business and/or residential areas located adjacent to the construction site.

In an exemplary embodiment, the PTO of the sanitation truck is controlled remotely by using a mobile device (e.g., a phone, tablet computer, wristwatch, etc.) to open an application/program, and then by using the application/program to power on and off the truck's vacuum system. In a preferred embodiment, the application/program is a WEMO application/program, which is an electrical and electronic controller that is sold for controlling home electric powered devices. In the present invention, this application/program is used to remotely activate electrical and electronic controllers that control the PTO of the sanitation truck.

Referring now toFIG.1, an exemplary embodiment of the portable restroom system of the present invention is shown generally at10. System10basically comprises: a plurality of portable restrooms12, each having at least one sanitary fixture (e.g., a toilet, a urinal) (not shown), at least one holding tank (not shown), and optionally, one or more plumbing connections (not shown); and a pipe14and a water line16that each extend substantially vertically through a multilevel building under construction18. In this exemplary embodiment, the portable restrooms12are located on each level or floor20of the building18, with each portable restroom12being in close proximity to both the pipe14and the water line16. The pipe14and the water line16each have a plumbing connection22,24located on each level or floor20, with the pipe's plumbing connection being a dump valve assembly26(as best shown inFIG.1A), and with the water line's plumbing connection being a spigot or a faucet28(as best shown inFIG.1B). Flexible hoses30are shown attached to each dump valve assembly26, extending toward the portable restrooms12. Flexible hoses (not shown) may also be attached to each spigot or faucet28extending toward the portable restrooms12. The pipe14also has a dump valve assembly26on a ground floor32of the building under construction18, which is shown attached to a sanitation truck34via a flexible hose36, allowing for fluid communication between the pipe14and the vacuum system of the sanitation truck34. The sanitation truck34has a PTO, with the vacuum system powered by the truck's PTO. The water line16also has a plumbing connection on a lowermost level38of the building under construction18, in the form of a water bleeder valve40, which will close when the temperature of the water is above a set point and the danger of freezing is over.

Pipe14has a preferred inside diameter ranging from about 5 to about 10 centimeters (cm) (more preferred, from about 5 to about 8 cm) and may be made from materials such as stainless steel and iron, fiber reinforced resins, hard polyvinyl chloride, synthetic resins such as polyethylene, polyvinyl chloride (PVC), and rubbers such as styrene-butadiene rubber. In a preferred embodiment, the pipe is made from PVC.

The dump valve assembly26, which is shown as a manually operated valve with a handle inFIG.1A, may also constitute a valve that can be operated pneumatically, electropneumatically, electrically, or electromagnetically.

Water line16has a preferred inside diameter ranging from about 1.2 to about 5 cm (more preferred, from about 1.6 to about 2.6 cm) and may be made of copper, cast iron, asbestos cement, cement, or plastic materials such as PVC, and cross-linked polyethylene (PEX). In a preferred embodiment, the water line16is made from PEX.

Pressurized water may be distributed through water line16at pressures ranging from about 0.28 to about 1.03 megapascal (mPa) (more preferred, from about 0.28 to about 0.41 mPa) to the floors20in the multilevel building under construction18. Water may be supplied via gravity feed to the water line16by a holding tank located on an upper or top level of the building. Water may also be supplied to the water line16by a holding tank with pumping means located on a lower or ground floor of the building, or the holding tank may be located on the sanitation truck. For embodiments in which the holding tank is located on the sanitation truck, the pumping system may be powered by the truck's PTO, which may also be controlled remotely along with the truck's vacuum system.

In areas where temperatures may fall below freezing, instead of or in addition to, for example, a water bleeder valve40, the water line16may be provided with insulation means, and optionally also with a heating mechanism (e.g., heat trace cable, etc.).

The vacuum capabilities (e.g., degree of vertical and horizontal pull) of sanitation truck vacuum systems are dependent upon the elevation or height as well as the overall length and the number of convolutions (e.g., twists and turns) in the piping system through which the vacuum is applied.

Sanitation truck vacuum systems typically have vacuum capabilities of as much as 29 inches of negative pressure. For every change in elevation of a pipe, there is a loss in suction or lift. Further, as the length and number of convolutions in horizontal portions of a piping system increase, there is a corresponding decrease in the degree of pull of the applied vacuum.

For multilevel buildings under construction having more than 10-15 floors, the vacuum system on the sanitation truck alone may not be able to apply sufficient vacuum to the upper floors. The vacuum capabilities of these vacuum systems are further impacted upon by the horizontal hose or pipe length needed to reach portable restrooms on each floor, which increases by, for example, remotely positioning the portable restrooms relative to one another on one or more floors of the building. The vacuum system on the sanitation truck may therefore not be able to apply sufficient vacuum or suction to draw the waste from the portable restrooms into the piping system and then into the sanitation truck's holding tank.

In one exemplary embodiment of the present invention, this problem is addressed using a modified vertical pipe with one or more reduced diameter sections. The reduced diameter section(s) is positioned along a portion of the pipe extending through the upper floors of the multilevel building under construction (e.g., at or above the 10th floor). As will be readily appreciated by those skilled in the art, the use of a reduced diameter section(s), where the vacuum is drawn through a restricted opening, will result in an increase in the suction or lift. In one such embodiment, each section of pipe preferably ranges from about 20 to about 36 centimeters in length and has a preferred inner diameter ranging from about 40 to about 60 percent (%) of the inner diameter of the pipe located on either side of the section.

In another exemplary embodiment, the system includes one or more power booster sub-stations positioned along and in fluid communication with an upper portion of the vertical pipe. Each power booster sub-station is preferably composed of a holding tank and a fluid pump (e.g., a power-boosting pump). The power booster sub-station(s) is preferably positioned along the portion of the vertical pipe extending through the upper floors (e.g., at or above the 10th floor) and serves to draw waste from the portable restrooms positioned on the upper floors and to direct the waste into the sub-station's holding tank. The number of power booster sub-stations and the distance between the sub-stations depends upon the height of the multilevel building as well as the length and number of convolutions in the horizontal piping system on each upper floor. The waste contained in the sub-station's holding tank is emptied into the sanitation truck's holding tank using the sanitation truck's vacuum system. Suitable fluid pumps are available from Pressure Lift Corporation, Lewisville, TX, under the product designation POWER BOOSTER™ pump.

In a preferred embodiment, the fluid pump of the one or more power booster sub-stations is controlled remotely by using a mobile device to open an application/program, and then by using the application/program to power on and off the fluid pump.

In a further exemplary embodiment of the inventive system, a modified vertical pipe with one or more reduced diameter sections is used in combination with one or more power booster sub-stations to achieve a suitable degree of vertical and horizontal pull through the upper floors of the multilevel building under construction.

An exemplary embodiment of the inventive noise-reducing and less labor-intensive method for draining the plurality of portable restrooms12in system10comprises:fluidly connecting the vacuum-like flexible hose36from the sanitation truck34to the pipe's ground-level plumbing connection; andin succession on each floor of the building containing the one or more portable restrooms12:(a) opening the pipe's dump valve assembly26;(b) fluidly connecting the pipe to a portable restroom;(c) remotely starting the vacuum system of the sanitation truck34(as best shown inFIG.2);(d) removing waste from the portable restroom;(e) remotely stopping the vacuum system of the sanitation truck34;(f) repeating steps (b)-(e) until waste has been removed from each portable restroom on the floor; and then(g) closing the pipe's dump valve assembly26.

A notable advantage of the present invention is that it obviates the need to transport each portable restroom down to a ground level or floor of the building under construction for service (e.g., drainage and cleaning/sanitizing), which saves both time and labor.

In an exemplary embodiment, pipe14is fluidly connected to the one or more portable restrooms12by way of a vacuum-like flexible hose having a first end connected to the pipe's plumbing connection, and a second end either fitted with a vacuum wand or connected to the portable restroom's plumbing connection. The vacuum-like flexible hoses may optionally be provided with valve means.

The inventive method, in a more preferred embodiment, further comprises cleaning the one or more drained portable restrooms.

In one such embodiment, cleaning the one or more drained portable restrooms comprises: using high-pressure water from water line16and a biocidal spray to kill bacteria and microbes to clean out the toilet bowl, and refilling the at least one holding tank with fresh water from water line16and a chemical deodorizer.

In a further exemplary embodiment, water line16is fluidly connected to the one or more portable restrooms12by way of a flexible hose having a first end connected to the water line's plumbing connection, and a second end either fitted with a nozzle or connected to the restroom's plumbing connection. The flexible hoses may optionally be provided with valve means.

In yet a further exemplary embodiment, the multilevel building under construction has more than ten floors, and system10further comprises one or more power booster sub-stations positioned along and in fluid communication with the substantially vertically extending pipe located at or above the tenth floor, each power booster sub-station composed of a holding tank and a fluid pump, wherein the method further comprises:in succession on each upper floor of the building containing the one or more portable restrooms:(a) opening the pipe's plumbing connection;(b) fluidly connecting the pipe to a portable restroom;(c) remotely starting the fluid pump of a power booster sub-station;(d) removing waste from the portable restroom, and directing the waste to the power booster sub-station's holding tank;(e) remotely stopping the fluid pump of the power booster sub-station;(f) repeating steps (b)-(e) until waste has been removed from each portable restroom on the upper floor; and then(g) remotely starting the vacuum system of the sanitation truck34; and(h) removing waste from the power booster sub-station's holding tank and directing the waste to the sanitation truck's holding tank.

Although exemplary embodiments have been shown and described, it will be clear to those of ordinary skill in the art that a number of changes, modifications, or alterations to the invention as described can be made. All such changes, modifications, and alterations should therefore be seen as within the scope of the disclosure.