The present invention relates to the field of tankless water heaters, and, more particularly, to a tool for removing and installing a tankless water heater inlet filter.
Tankless water heaters are becoming more popular to replace large tanks that are currently used to heat water. In contrast to existing water tank heaters, a tankless water heater instantaneously heats water as it passes through the continuous flow system. Tankless water heater assemblies are more efficient because they only heat water on demand and do not store heated water. However, a problem sometimes associated with tankless water heaters is their need for maintenance and repair. One way to reduce costly repairs is to clean or change the water inlet filter on a regular basis. However, the water inlet filter can be difficult to remove.
Accordingly, there is a need in the art for a tool that can assist in removing and replacing the water inlet filter for a tankless water heater.
In view of the foregoing background, it is therefore an object of the present invention to provide a tool that makes it easy to remove a tankless water heater inlet filter. The tool includes a base portion having a bottom end and an opposing top end. The base portion has a base sidewall around its periphery extending from its bottom end to the top end of the base, and a head portion having a bottom end adjacent to the top end of the base portion. The head portion is aligned with and concentric with the base portion and the head portion having a head sidewall around its periphery extending from its bottom end to a free end of the head portion. The tool also includes at least one reciprocal engagement device extending from the head portion and configured to engage with an engagement device of the tankless water heater inlet filter. The base portion may comprise a hand grip twist knob, and the head portion may have a circular shape.
The head portion may have a lower circular member and an upper circular member, where the upper circular member having a diameter less than the lower circular member creating a ledge therebetween. The at least one reciprocal engagement device of the head portion may have a first slot and a second slot perpendicular to the first slot. In another aspect, the at least one reciprocal engagement device of the head portion may have a pair of spaced apart fingers.
The at least one reciprocal engagement device of the head portion may have a pair of opposing tabs extending alongside the head portion, and the base portion and the head portion may comprise plastic or metal.
In another particular aspect, a filter kit for a tankless water heater is disclosed. The filter kit includes a replacement tankless water heater inlet filter, and a tool for removing a tankless water heater inlet filter and installing the replacement tankless water heater inlet filter. The tankless water heater inlet filter has a filter cap, and an engagement device is disposed along an inner periphery of the filter cap. The tool includes a base portion having a bottom end and an opposing top end. The base portion has a base sidewall around its periphery extending from its bottom end to the top end of the base, and a head portion has a bottom end adjacent to the top end of the base portion. The head portion is aligned with and concentric with the base portion and the head portion has a head sidewall around its periphery. The tool includes at least one reciprocal engagement device extending from the head portion and is configured to engage with an engagement device of the tankless water heater inlet filter.
Rotating the base portion causes the tankless water heater inlet filter to rotate and be removed, and installing the replacement tankless water heater inlet filter is done by rotating the base portion in the opposite direction.
In yet another particular aspect, a method to remove and install a tankless water heater inlet filter is disclosed. The method includes using a tool comprising a base portion having a bottom end and an opposing top end. The base portion has a base sidewall around its periphery extending from its bottom end to the top end of the base, and a head portion has a bottom end adjacent to the top end of the base portion. The head portion being aligned with and concentric with the base portion and the head portion having a head sidewall around its periphery. The tool includes at least one reciprocal engagement device extending from the head portion and that is configured to engage with an engagement device of the tankless water heater inlet filter. The method includes inserting the head portion into the filter cap to engage the engagement device of the tankless water heater inlet filter, gripping the base portion of the tool, and rotating the base portion to cause the tankless water heater inlet filter to rotate in a first direction to remove the tankless water heater inlet filter from a tankless water heater inlet line.
The method also includes inserting a replacement tankless water heater inlet filter into the tankless water heater inlet line, and rotating the base portion to cause the replacement tankless water heater inlet filter to rotate in an opposing second direction to install the replacement tankless water heater inlet filter into the tankless water heater inlet line.
The aspects and the attendant advantages of the embodiments described herein will become more readily apparent by reference to the following detailed description when taken in conjunction with the accompanying drawings wherein:
The present invention will now be described more fully hereinafter with reference to the accompanying drawings, in which preferred 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.
Referring now to
A tool 100 for removing the inlet filter 10 in accordance with the present disclosure is shown in
Referring now to
The upper circular member 106 having a smaller diameter helps to slide and guide the tool 100 into the correct position making it easier for the user to engage the protrusions or walls 14 of the inlet filter 10 with the tool 100.
In a particular aspect, the engagement device of the tool 100 comprises perpendicular slots 108A, 108B as shown in
It is important that the slots 108a, 108b of the tool 100 engage along substantially the entire length of the protrusions or walls 14 so that they are not broken or damaged when torque is applied. The external spiral threading 18 of the filter cap 12 is tightly engaged with matching spiral threading within the tankless water heater inlet line when installed to prevent water leaks. Thus, a substantial amount of force is required to loosen the inlet filter 10 for removal.
The tool 100 makes it easier to remove the inlet filter 10 when the area around the inlet line to the tankless water heater is partially blocked by other utilities and pliers or other tools are not usable because of the limited space. In some cases, a socket extension can be used with the tool 100 in order to achieve a mechanical advantage to remove the inlet filter 10 from a distance. Also, as those of ordinary skill in the art can appreciate, the base portion 102 may be a different shape other than hexagonal that can be used with a socket, wrench or other similar tool. The base 102 may also have a star shaped drive, for example, to be used with an appropriate bit or fitting.
Due to different brands of tankless water heaters, not all inlet filter caps are the same. Accordingly, referring to
In this particular aspect, the tool 200 includes a base portion 202 having a hexagonal shape and size configured to be engaged by a socket. The tool 200 also includes a head portion 204 coupled to and aligned with the base portion 202 and configured and sized to fit inside the filter cap 12 of the tankless water heater inlet filter 10 as described above. However, instead of two perpendicular slots, the reciprocal engagement device comprises only one slot 208 and a pair of spaced apart fingers to engage the protrusions or walls 114 of the filter cap 12.
The base portion 202 of the tool 220 may have a hexagonal shape but could be square or other shape, or have a star drive, for example. The base 202 may include a hand grip twist knob so that the tool 200 can be used without a separate socket or wrench.
The tool 300 shown in
The tool 300 also includes a head portion 304 coupled to and aligned with the base portion 302 and configured and sized to fit inside the filter cap 12 of the tankless water heater inlet filter 10. However, instead of slots as discussed above, the tool 300 comprises a pair of opposing tabs 310a, 310b extending outward. Accordingly, the pair of opposing tabs 310a, 310b of the tool 300 are configured to engage the walls 14 of the filter cap 12 along one side of each rather than along both sides of the opposing walls 14.
A method to remove and install a tankless water heater inlet filter 10 using a tool 100, 200, 300 as described above includes inserting a head portion of the tool into the filter cap 12 to engage the engagement device of the tankless water heater inlet filter, placing a socket over the base portion of the tool (or otherwise gripping the base portion), and rotating the base portion to cause the tankless water heater inlet filter to rotate in a first direction to remove the tankless water heater inlet filter from a tankless water heater inlet line.
The method includes inserting a replacement tankless water heater inlet filter into the tankless water heater inlet line, and rotating the socket over the base portion of the tool to cause the replacement tankless water heater inlet filter to rotate in an opposing second direction to install the replacement tankless water heater inlet filter into the tankless water heater inlet line. As discussed above, in a particular aspect the reciprocal engagement device of the head portion of the tool 100 used with this method includes a first slot 108a and a second slot 108b perpendicular to the first slot 108a. In another aspect of the claimed method, the reciprocal engagement device of the head portion of the tool 200 comprises only one slot 208 and a pair of spaced apart fingers. In yet another aspect, the method includes a tool 300 having a reciprocal engagement device that comprises a pair of opposing tabs 310a, 310b extending alongside the head portion and extending from the base portion.
The various aspects of the tool described above provide an easier way for removing and installing a tankless water heater inlet filter during maintenance. The method of using the tool overcomes the shortcomings of using channel locks or needle nose pliers. The tool allows for the safe removal and installation of the inlet filter without damaging the filter cap or the tankless water heater itself.
Many modifications and other embodiments of the invention will come to the mind of one skilled in the art having the benefit of the teachings presented in the foregoing descriptions and the associated drawings. Therefore, it is understood that the invention is not to be limited to the specific embodiments disclosed, and that modifications and embodiments are intended to be included within the scope of the appended claims.
This application is a continuation of U.S. patent application Ser. No. 18/216,804 filed Jun. 30, 2023, now U.S. Pat. No. 11,975,429 issued May 7, 2024 which claims the benefit of U.S. provisional application No. 63/445,503 filed Feb. 14, 2023, which is hereby incorporated herein in its entirety by reference.
Number | Date | Country | |
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63445503 | Feb 2023 | US |
Number | Date | Country | |
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Parent | 18216804 | Jun 2023 | US |
Child | 18655940 | US |