OVERFILL PREVENTION CAP

Abstract

The disclosed technology includes a fill cap comprising a cap body including a well formed within said cap body, and a non-venting center hole positioned at the center of the cap body.

Description

FIELD

The present invention relates generally to caps for liquid containers, and in particular caps with features to prevent overfilling and/or spillage of a liquid during filling of a liquid container.

BACKGROUND

Typically, caps for liquid containers are usually only designed to prevent a liquid within the container from spilling out and to allow access to interior of the container when removed. Filling a container with a liquid, such as filling of a water tank, often requires someone to monitor the tank during the filling process. Often, an employee, such as a maintenance personnel is required to remain near the container while filling it up to prevent spillage from overfilling of the container or dislodgement of the liquid source from a water container.

For example, commercial floor scrubbers usually include a freshwater tank which is filled with water by a hose. A water tank of a large, ride-on floor scrubber can hold more than 40 gallons of water. Normally, a user is required to be near the floor scrubber during filling to ensure the water hose does not dislodge from the tank or the tank begins to overflow. However, this may prevent the user from completing other tasks which require them to step out of view from the floor scrubber during filling. What is needed, therefore, is a cap which prevents overfilling and/or spillage while adding a liquid to a container.

SUMMARY

There is provided, in accordance with an example of the disclosed technology, a fill cap comprising a cap body, a well formed within the cap body, and a non-venting center hole positioned at a center of the cap body.

The cap body can be configured to receive a shut-off valve. The non-venting center hole can comprise interior threads for coupling the shut-off valve to the cap body. The shut-off valve can comprise a float valve.

The cap body can be configured to receive a quick connect adapter. The cap body can comprise an adapter protrusion extending from the bottom wall of the well and into the interior of the well. An interior surface of the adapter protrusion can be formed by the non-venting center hole, and an exterior surface of the adapter protrusion can comprise threads for coupling the quick connect adapter to the cap body.

The fill cap can comprise a weep hole provided through a bottom wall of the well. The fill cap can comprise three weep holes provided through a bottom wall of the well. The cap body can further comprise a vent hole positioned upward from the well. The cap body can further comprise a ridged grip and the vent hole can be positioned on the ridged grip.

The disclosed technology can include a portable floor scrubber comprising a container having an aperture to receive water, and a fill cap configured to removably couple to the aperture of the container. The fill cap can comprise a cap body comprising a well formed within the cap body and a non-venting center hole positioned at the center of the cap body. The fill cap can further comprise a quick connect adapter for coupling to the cap body and configured to couple to a water source, and a shut-off valve coupled to the cap body and configured to stop a flow of water from the water source into the container when a volume of water in the container reaches a predetermined level.

The non-venting center hole can comprise interior threads for removably coupling the shut-off valve to the cap body. The cap body can comprise a valve protrusion extending downward from the well, such that the shut-off valve is positioned below the bottom wall the well when coupled to the cap body, and interior to the container when the fill cap is removably coupled to the container.

The cap body can comprise an adapter protrusion extending from the bottom wall of the well and into the interior of the well. An interior surface of the adapter protrusion may be formed by the non-venting center hole, and an exterior surface of the adapter protrusion can comprise threads for coupling the quick connect adapter to the cap body. The cap body can further comprise a flange, and wherein the bottom surface of the flange abuts an exterior surface of the container when the fill cap is received by the aperture of the container. The cap body can further comprise a vent hole positioned upward from the well. The cap body can further comprise a ridged grip and the vent hole can be positioned on the ridged grip.

The disclosed technology can include a fill cap for limiting the volume of fluid to be received by a fluid container. The fill cap can comprise a cap body. The cap body can comprise a well formed within the cap body, a non-venting center hole positioned at a center of the cap body, a flange, and a circular wall extending downward from the flange. The circular wall can comprise threads provided on an exterior surface. The fill cap can further comprise a shut-off valve coupled to the cap body and a quick connect adapter coupled to the cap body. The cap body can further comprise a weep hole provided through a bottom wall of the well.

The quick connect adapter can be configured to couple to a hose adapter. The cap body can further comprise a ridged grip extending upward from the flange. The cap body can further comprise a vent hole positioned on the ridged grip. The shut-off valve can be a float valve.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1A is an illustration of an example floor scrubber comprising a water tank and a cap for the water tank;

FIG. 1B is an illustration of an example floor scrubber comprising a water tank comprising a fill cap preventing overfilling, according to aspects of the present invention;

FIG. 1C depicts a partial sectional view taken along line 1C in FIG. 1B of a fill cap for preventing overfilling coupled to an aperture of a water tank, according to aspects of the present inventions;

FIG. 2A depicts a top perspective view of an example fill cap, according to aspects of the present invention;

FIG. 2B depicts a bottom perspective view of an example fill cap, according to aspects of the present invention;

FIG. 2C depicts a top plan view of an example fill cap, according to aspects of the present invention;

FIG. 2D depicts a bottom plan view an example fill cap, according to aspects of the present invention;

FIG. 2E depicts a side plan view an example fill cap, according to aspects of the present invention;

FIG. 2F depicts a sectional view taken along line 2F in FIG. 2C of an example fill cap, according to aspects of the present invention;

FIG. 3A depicts an exploded view of an example fill cap for coupling with a quick connect adapter and shut-off valve, according to aspects of the present invention;

FIG. 3B depicts a top perspective view of an example fill cap coupled with a quick connect adapter and shut-off valve, according to aspects of the present invention;

FIG. 3C depicts a side plan view of an example fill cap coupled with a quick connect adapter and shut-off valve, according to aspects of the present invention;

FIG. 4A illustrates an example fill cap for coupled with a quick connect adapter, hose adapter, and shut-off valve, according to aspects of the present invention; and

FIG. 4B illustrates an example hose adapter, according to aspects of the present invention.

DETAILED DESCRIPTION

The following detailed description should be read with reference to the drawings, in which like elements in different drawings are identically numbered. The drawings, which are not necessarily to scale, depict selected embodiments and are not intended to limit the scope of the invention. The detailed description illustrates by way of example, not by way of limitation, the principles of the invention. This description will clearly enable one skilled in the art to make and use the invention, and describes several embodiments, adaptations, variations, alternatives, and uses of the invention, including what is presently believed to be the best mode of carrying out the invention.

As used herein, the terms “about” or “approximately” for any numerical values or ranges indicate a suitable dimensional tolerance that allows the part or collection of components to function for its intended purpose as described herein. More specifically, “about” or “approximately” may refer to the range of values ±20% of the recited value, e.g., “about 90%” may refer to the range of values from 71% to 110%.

As discussed herein, “user” can include an operator, maintenance technician, or any other individual associated with using the fill cap of the present invention and associated equipment and/or components.

Reference is made to FIG. 1A showing an example floor scrubber 5 comprising a container 50 to receive a liquid. In some embodiments, the container 50 is a water tank for receiving fresh water used during operation of the floor scrubber 5. Typically, a cap 10, as previously known, is received by an aperture of the container 50 to prevent water from spilling out of the container 50. The prior art cap 10 may be threaded into the aperture. While the prior art cap 10 may be useful in preventing water from spilling out of the container 50 during use, it lacks features which may prevent spilling and overfilling during filling of container 50. Therefore, a user may be required to monitor the container during filling, or even hold a hose during the filling process to prevent the hose from dislodging from the container.

Reference is made to FIG. 1B showing an exemplary fill cap 100 coupled to the aperture of a container 50 for holding a volume of liquid, according to some embodiments. The fill cap 100 comprises features to prevent spilling and overflowing during filling of the container 50, as further described herein. A quick connect adapter 300 can be coupled to the fill cap 100 to allow rapid coupling of a hose to the fill cap 100. The fill cap 100 can allow for a liquid, such as water, to pass into the container 50 without the need to decouple the fill cap 100 from the container during filling.

FIG. 1C is a partial sectional view of the container 50 taken across line 1C (shown in FIG. 1B). FIG. 1C depicts fill cap 100 coupled within an aperture 52 of the container. In some embodiments, aperture 52 comprises threads on an interior surface of the aperture 52 which allow for the fill cap 100 to be removably coupled to the container 50. In some embodiments, the fill cap 100 comprises a shut-off valve 200 provided interior to the container 50 when the fill cap 100 is coupled to the container 50. The shut-off valve 200 may be configured to prevent liquid from flowing from a source (e.g., water from a water hose) into a container 50 when the liquid level in the container 50 reaches the shut-off valve 200.

FIGS. 2A-2F depict an exemplary fill cap 100 comprising a cap body 102 and a well 104 formed within the cap body 102. The fill cap 100 can be configured to couple to an aperture of a container (e.g., a water tank of floor scrubber as depicted in FIGS. 1A and 1B). The fill cap 100 can be configured to be retrofitted to an existing aperture of a container and replace an existing cap of the container. In some embodiments, the cap body 102 is coupled to a container via a threaded engagement where threads 124 provided on a circular wall 114 of the cap body 102 to mate with threads of an aperture of a container. In some embodiments, the circular wall extends downward from a flange 112. In some examples, the height of the circular wall 114 is about half of the total height of the cap body 102.

The flange 112 can be provided to abut an exterior surface of a container when the fill cap 100 is received by an aperture of the container. The bottom surface of the flange 112 which abuts the container can create a seal between the cap body 102 and the container. The bottom surface of the flange 112, which abuts the container, can comprise an elastomeric material to facilitate creation of the seal between the cap body 102 and the container.

The well 104 can comprise at least one weep hole 106 provided through a bottom wall 126 of the well 104. When coupled to a container, the well 104 protrudes toward the inside of the container and the weep hole 106 can allow liquid spilled into the well 104 to drain into the inside of the container 50. In other words, if liquid overflows into the well 104 during filling (typically during the coupling and decoupling of the hose to the fill cap) it will drain back into the container 50 through the weep hole 106.

In some embodiments, multiple weep holes 106 are provided through the bottom wall 126 of the well 104. In some embodiments, the cap body 102 comprises three weep holes 106 provided through a bottom wall 126 of the well 104. The weep holes 106 can be evenly spaced from one another, such that at least one of the weep holes 106 is provided at the low point of the well 104, when the fill cap 100 is received by an aperture which is tilted, to prevent accumulation liquid in the well 104. The cap body 102 can comprise one, two, three, four, five, six, or more weep holes 106 provided through the bottom wall 126 of the well 104. The diameter of the weep holes 106 may be sized to allow liquid to drain into the container while being small enough to prevent liquid within the container from exiting through the weep holes 106 as the container is moved. In some embodiments, the bottom wall 126 of the well 104 and a bottom end of the circular wall 114 are provided at the same distance from the top of the cap body 102 and well 104. In some embodiments, the diameter of the well 104 is about half the diameter of the flange 112.

In some embodiments, the fill cap 100 comprises a non-venting center hole 120 is positioned at a center of the cap body 102. In some embodiments, when the fill cap 100 is coupled to an aperture of a container, the non-venting center hole 120 allows for liquid to pass through the cap body 102 and into a container.

The non-venting center hole 120 can comprise interior threads 122 for coupling a shut-off valve (e.g., shut-off valve 200 as depicted in FIGS. 1C, 3A-3C and 4A), as further described herein. In some embodiments, a bottom portion of the non-venting center hole 120, comprises the interior threads 122 for coupling to a shut-off valve. In some embodiments, the cap body 102 comprises a valve protrusion 118 which extends downward from the well 104 and into an interior of a container when the fill cap 100 is removably coupled into to the container. In some embodiments, the non-venting center hole 120 extends through the valve protrusion 118. The interior threads 112 of the non-venting center hole 120 may extend the length of the valve protrusion 118. The term “non-venting” in certain examples can describe the majority of the air being displaced as the liquid fills the container does not pass through that hole. As is known, small amounts of air may pass through depending on the nature of the seal created and the type of valve, but typically cannot pass enough air to be considered a vent. In some embodiments, the diameter of the non-venting center hole 120 is about half the diameter, or less, of the outer diameter of the valve protrusion 118.

The cap body 102 can further comprise an adapter protrusion 116 extending upward from the bottom wall 126 of the well 104 and into an interior 105 of the well 104. In some embodiments, the non-venting center hole 120 extends through the adapter protrusion 116 and forms an interior surface 123 of the adapter protrusion 116. An exterior surface 128 of the adapter protrusion 116 can comprise threads 127 for coupling a quick connect adapter (e.g., quick connect adapter 300 as depicted in FIGS. 1A, 3A, and 3B) to the cap body 102.

The cap body 102 can further comprise a ridged grip 103 which provides an area for a user to hold when coupling the fill cap 100 with an aperture of a container. The ridged grip 103 may extend upward from the flange 112 of the cap body 102. The ridges of the ridged grip 103 may be formed by convex ridges having concave or scalloped portions provided therebetween. In some embodiments, the ridged grip 103 comprises 9 ridges equally spaced apart and provided about the well 104 of the cap body 102. The ridged grip may be provided with any number of ridges, for example 4, 5, 6, 7, 8, 9, 10, 11, 12, or more ridges. The scalloped or concave portions of the ridged grip 103 can provide indentations for a user's fingers to facilitate gripping and rotation of the cap body 102 during coupling of the fill cap 100 to the aperture of a container. In some embodiments, the concave portions of the ridged grip have a radius of curvature equal to the radius of curvature of the convex portions. In some embodiments, the concave portions of the ridged grip have a radius of curvature greater than the radius of curvature of the convex portions. In some embodiments, the concave portions of the ridged grip have a radius of curvature less than the radius of curvature of the convex portions. Further examples of the grip 103 can have straight edges forming a hexagon or any other multi-side shape. A straight edge grip 103 can facilitate engagement both by a user's hand or a tool. In some embodiments, the ridged grip 103 has a height of about 18 mm, extending from a top surface of the flange 112.

In some embodiments, the fill cap 100 further comprises a vent hole 108 provided through the cap body 102. An upper opening of the vent hole 108 can be positioned on the ridged grip 103 and extend through the cap body 102 to a bottom opening positioned in between a space 119 provided between the well 104 and the circular wall 114. The vent hole 108 can be provided to allow air to escape as the container is being filled. Positioning of the vent hole 108 on the ridged grip 103 and above the well 104 can facilitate draining of liquid through the weep holes 106 provided through the bottom wall 126 of the well 104. In one example, the vent hole 108 may not comprise a vapor lock. Lack of a vapor lock for the vent hole 108 can prevent accidental pressurization or formation of a vacuum within the container during filling of the container, movement of the container, and/or temperature changes occurring within the container.

In an example, the non-venting center hole 120 comprises a diameter of approximately 15 millimeters (mm), the flange 112 comprises an outer diameter of approximately 137 mm, and/or the well 104 comprises an outer diameter of approximately 70 mm. In an example, as depicted in FIG. 2E, the total height 170 of the cap body 102 is about 81 mm, the interior height 172 of the cap body 102 (i.e., the distance from the flange 112 to the bottom to the of the valve protrusion 118, which is about how much of the cap body 102 resides within an interior of the container to which it is coupled to) is about 63 mm. In an exemplary embodiment, the valve protrusion 118 comprises an outer diameter of about 35 mm and extends a distance 174 of about 29 mm from the bottom of the circular wall 114.

With reference to FIGS. 3A-3B, a fill cap 100 is depicted comprising a shut-off valve 200 and a quick connect adapter 300 which can be removably coupled to the cap body 102. In some embodiments, a quick connect adapter 300 comprises a first end 302 configured to facilitate coupling of the quick connect adapter 300 to the cap body 102. The first end 302 of the quick connect adapter 300 may comprise interior threads to engage with the threads (e.g., threads 127 depicted in FIG. 2A) provided on an exterior surface of the adapter protrusion of the cap body 102. The quick connect adapter 300 can comprise a second end 304 configured to couple to a hose adapter (e.g., hose adapter 400 as depicted in FIGS. 4A and 4B). The quick connect adapter 300 allows for a rapid and secure connection to be established between a water hose, or other liquid source, and the fill cap 100. When connected, for example, to a water hose, water from the hose can pass through cap body 102 via the non-venting center hole (e.g., non-venting center hole 120 as depicted in FIGS. 2A-2D) and into a container to which the fill cap 100 is coupled to. Further, the quick connect adapter 300 allows for liquid to flow into the container to which the fill cap 100 is coupled to without having to remove the fill cap 100 from the aperture of the container. The quick connect adapter 300 may be coupled to the cap body 102 via threads 127 provided on an exterior surface of the adapter protrusion 116. While a threaded engagement between the quick connect adapter 300 and adapter protrusion 116 of the cap body 102 is depicted, other engagements may be suitable, such as push-to-connect (e.g., a pneumatic quick connect coupling), collar couplings, or the quick connect adapter may be integrated into the cap body 102.

With reference to FIGS. 3A to 3C, the fill cap 100 may comprise a shut-off valve 200 In some embodiments, the shut-off valve 200 is configured to prevent liquid from flowing from a source (e.g., the flow of water from a water hose) into a container, to which the fill cap 100 is coupled to, when the liquid level in the container reaches a predetermined level. In some embodiments, the shut-off valve 200 comprises a first end 202 which is configured to couple with the cap body 102. In some embodiments, the first end 202 of the shut-off valve 200 comprises threads configured to engage with interior threads of the non-venting center hole extending the length of the valve protrusion 118 (e.g., interior threads 122 of the non-venting center hole 120 as depicted in FIG. 2B).

The shut-off valve 200 may be a floating ball valve. The second end 204 of the shut-off valve 200 may comprise one or more apertures to allow liquid to enter and exit the shut-off valve 200. In an exemplary filling operation, water enters the first end 202 of the shut-off valve 200 and exits from the second end 204 into a container. When the container is filled up to the shut-off valve 200, a buoyant component within the shut-off valve floats toward the first end 202 and creates a seal, preventing further water from entering the container. When the shut-off valve 200 and the quick connect adapter 300 are coupled to the cap body, a hose may be coupled to the quick connect adapter 300 and water from the hose will flow through the quick connect adapter, through the cap body 102 (via the non-venting center hole 120 as depicted in FIGS. 2A-2D), and through the shut-off valve 200 until the shut-off valve 200 is engaged by the water within the container to prevent water from entering the container. Positioning of the weep holes (e.g., weep holes 106 as depicted in FIGS. 2A-2D) above the first end 202 of the shut-off valve 200 may allow for water spilled within the well of the cap body 102 to drain into the container, even if the shut-off valve 200 has been triggered by the waterline within the container. The shut-off valve 200 may be a ½-inch or ⅝-inch valve, wherein the first end 202 is configured to engage with ½-inch or ⅝-inch, respectively, threaded interior circumference.

FIG. 4A depicts a fill cap 100 comprising a cap body 102, a shut-off valve 200 coupled to the cap body, and a hose adapter 400 coupled to a quick connect adapter (e.g., quick connect adapter 300, as depicted in FIGS. 3A and 3B, present but not visible in FIG. 4A) threaded onto the cap body 102. As depicted in FIG. 4B, the hose adapter 400 may comprise a first end 402 for coupling to the quick connect adapter (e.g., quick connect adapter 300, as depicted in FIGS. 3A and 3B) and a second end 404 for connecting to a hose. The second end 404 of the hose adapter 400 may be configured to thread onto hose connector. The second end 404 of the hose adapter 400 may be configured to attach a ¾-inch hose connector threading. A user may be able to select the hose adapter 400 to accommodate various hose connector thread sizes, such as ½-inch, ⅝-inch, ¾-inch, or 1-inch for coupling to the fill cap 100 via the quick connect adapter 300.

The disclosed technology described herein can be further understood according to the following clauses:

Clause 1: A fill cap comprising: a cap body; a well formed within the cap body; and a non-venting center hole positioned at a center of the cap body.

Clause 2: The fill cap of Clause 1, wherein the cap body is configured to receive a shut-off valve.

Clause 3: The fill cap of Clause 2, wherein the non-venting center hole comprises interior threads for coupling the shut-off valve to the cap body.

Clause 4: The fill cap of Clause 3, wherein the shut-off valve is a float valve.

Clause 5: The fill cap of any one of Clauses 1-4, wherein the cap body is configured to receive a quick connect adapter.

Clause 6: The fill cap of Clause 5, wherein the cap body comprises an adapter protrusion extending from the bottom wall of the well and into an interior of the well, wherein an interior surface of the adapter protrusion is formed by the non-venting center hole, and wherein an exterior surface of the adapter protrusion comprises threads coupling the quick connect adapter to the cap body.

Clause 7: The fill cap of any one of Clauses 1-6, further comprising a weep hole provided through a bottom wall of the well.

Clause 8: The fill cap of any one of Clauses 1-7, wherein the cap body further comprises a vent hole positioned upward from the well.

Clause 9: The fill cap of Clause 8, wherein the cap body further comprises a ridged grip and the vent hole is positioned thereon.

Clause 10: A portable floor scrubber comprising: a container having an aperture to receive water; and a fill cap configured to removably couple to the aperture of the container, the fill cap comprising: a cap body comprising: a well formed within the cap body; and a non-venting center hole positioned at a center of the cap body; a quick connect adapter coupled to the cap body and configured to couple to a water source; and a shut-off valve coupled to the cap body and configured to stop a flow of water from the water source into the container when a volume of water in the container reaches a predetermined level.

Clause 11: The portable floor scrubber of Clause 10, wherein the non-venting center hole comprises interior threads removably coupling the shut-off valve to the cap body.

Clause 12: The portable floor scrubber of Clause 11, wherein the cap body comprises a valve protrusion extending downward from the well, such that the shut-off valve is: positioned below the bottom wall the well when coupled to the cap body, and interior to the container when the fill cap is removably coupled to the container.

Clause 13: The portable floor scrubber of any one of Clauses 10-12, wherein the cap body comprises an adapter protrusion extending from the bottom wall of the well and into an interior of the well, wherein an interior surface of the adapter protrusion is formed by the non-venting center hole, and wherein an exterior surface of the adapter protrusion comprises threads for coupling the quick connect adapter to the cap body.

Clause 14: The portable floor scrubber of any one of Clauses 10-13, wherein the cap body comprises a flange, and wherein a bottom surface of the flange abuts an exterior surface of the container when the fill cap is received by the aperture of the container.

Clause 15: The portable floor scrubber of any one of Clauses 10-14, wherein the cap body further comprises a vent hole positioned upward from the well.

Clause 16: The portable floor scrubber of Clause 15, wherein the cap body further comprises a ridged grip and the vent hole is positioned thereon.

Clause 17: A fill cap for limiting a volume of fluid to be received by a fluid container, comprising: a cap body comprising; a well formed within the cap body; a non-venting center hole positioned at a center of the cap body; a flange; a circular wall extending downward from the flange, the circular wall comprising threads provided on an exterior surface; a shut-off valve coupled to the cap body; and a quick connect adapter coupled to the cap body.

Clause 18: The fill cap of Clause 17, wherein the quick connect adapter is configured to couple to a hose adapter.

Clause 19: The fill cap of Clause 17 or 18, wherein the cap body further comprises a ridged grip extending upward from the flange and a vent hole positioned on the ridged grip.

Clause 20: The fill cap of any one of Clauses 17-19, wherein the cap body further comprises a weep hole provided through a bottom wall of the well.

The embodiments described above are cited by way of example, and the present invention is not limited by what has been particularly shown and described hereinabove. Rather, the scope of the invention includes both combinations and sub combinations of the various features described hereinabove, as well as variations and modifications thereof which would occur to persons skilled in the art upon reading the foregoing description and which are not disclosed in the prior art.

Claims

1. A fill cap comprising: a cap body;a well formed within the cap body; anda non-venting center hole positioned at a center of the cap body.

2. The fill cap of claim 1, wherein the cap body is configured to receive a shut-off valve.

3. The fill cap of claim 2, wherein the non-venting center hole comprises interior threads for coupling the shut-off valve to the cap body.

4. The fill cap of claim 3, wherein the shut-off valve is a float valve.

5. The fill cap of claim 1, wherein the cap body is configured to receive a quick connect adapter.

6. The fill cap of claim 5, wherein the cap body comprises an adapter protrusion extending from the bottom wall of the well and into an interior of the well, wherein an interior surface of the adapter protrusion is formed by the non-venting center hole, and wherein an exterior surface of the adapter protrusion comprises threads coupling the quick connect adapter to the cap body.

7. The fill cap of claim 1, further comprising a weep hole provided through a bottom wall of the well.

8. The fill cap of claim 1, wherein the cap body further comprises a vent hole positioned upward from the well.

9. The fill cap of claim 8, wherein the cap body further comprises a ridged grip and the vent hole is positioned thereon.

10. A portable floor scrubber comprising: a container having an aperture to receive water; anda fill cap configured to removably couple to the aperture of the container, the fill cap comprising: a cap body comprising: a well formed within the cap body; anda non-venting center hole positioned at a center of the cap body;a quick connect adapter coupled to the cap body and configured to couple to a water source; anda shut-off valve coupled to the cap body and configured to stop a flow of water from the water source into the container when a volume of water in the container reaches a predetermined level.

11. The portable floor scrubber of claim 10, wherein the non-venting center hole comprises interior threads removably coupling the shut-off valve to the cap body.

12. The portable floor scrubber of claim 11, wherein the cap body comprises a valve protrusion extending downward from the well, such that the shut-off valve is: positioned below the bottom wall of the well when coupled to the cap body, and interior to the container when the fill cap is removably coupled to the container.

13. The portable floor scrubber of claim 10, wherein the cap body comprises an adapter protrusion extending from the bottom wall of the well and into an interior of the well, wherein an interior surface of the adapter protrusion is formed by the non-venting center hole, and wherein an exterior surface of the adapter protrusion comprises threads for coupling the quick connect adapter to the cap body.

14. The portable floor scrubber of claim 10, wherein the cap body comprises a flange, and wherein a bottom surface of the flange abuts an exterior surface of the container when the fill cap is received by the aperture of the container.

15. The portable floor scrubber of claim 10, wherein the cap body further comprises a vent hole positioned upward from the well.

16. The portable floor scrubber of claim 15, wherein the cap body further comprises a ridged grip and the vent hole is positioned thereon.

17. A fill cap for limiting a volume of fluid to be received by a fluid container, comprising: a cap body comprising; a well formed within the cap body;a non-venting center hole positioned at a center of the cap body; a flange; anda circular wall extending downward from the flange, the circular wall comprising threads provided on an exterior surface;a shut-off valve coupled to the cap body; anda quick connect adapter coupled to the cap body.

18. The fill cap of claim 17, wherein the quick connect adapter is configured to couple to a hose adapter.

19. The fill cap of claim 17, wherein the cap body further comprises a ridged grip extending upward from the flange and a vent hole positioned on the ridged grip.

20. The fill cap of claim 17, wherein the cap body further comprises a weep hole provided through a bottom wall of the well.