The present disclosure generally relates to hand trucks for water heaters.
Hand trucks are generally designed to help move heavy items from one place to another. A typical hand truck includes a platform, handles, and wheels. These general-purpose hand trucks can greatly facilitate moving heavy items but may lack utility for specific tasks. For example, water heaters are heavy items that can be moved using a hand truck. However, installing and replacing a water typically requires a plumber or other person to use a bear hug method to lift the water heater into and out of its installation location. This risks possible injury, damage to the water heater, and/or damage to the installation site.
According to a number of implementations, the present disclosure relates to a hand truck for installing and removing water heaters. The hand truck includes a main platform that includes curved legs at a bottom portion of the main platform and handles at a top portion of the main platform, the handles being rotatable from a backwards-facing orientation to an outward-facing orientation. The hand truck also includes a wheel frame that includes a telescopic ram stop configured to guide the wheel frame from a closed position to an open position.
In some embodiments, the curved legs include rubber landing feet.
The hand truck of claim 1 wherein the main platform is configured to lift a water heater onto a platform that is at least 18 inches high by a single person. In some embodiments, the curved legs of the main platform are configured to keep a water heater above a lip of a water heater pan while installing the water heater in the water heater pan. In some embodiments, the hand truck further includes a pin used to lock the wheel frame in place in the open position. In some embodiments, the main platform does not include a bottom ledge.
In some embodiments, the wheel frame includes a pair of wheels coupled to the wheel frame. In further embodiments, the wheel frame includes a pair of wheel support bars to rotatably couple the pair of wheels to the main platform. In further embodiments, the wheel support bars are coupled to vertical support bars of the main platform with hinged connectors.
In some embodiments, the main platform includes a pair of vertical support bars. In further embodiments, the main platform further includes a pair of curved cross bars extending between the pair of vertical support bars. In further embodiments, the wheel frame includes a curved main support bar that couples the telescoping ram stop to the vertical support bars of the main platform.
In some embodiments, the curved legs curve backwards toward the wheel platform. In some embodiments, in the closed position, the wheel frame is adjacent to the main platform. In some embodiments, in the closed position, a pair of wheels of the wheel frame are near the curved legs of the main platform. In some embodiments, in the open position, the wheel frame forms an angle of 90 degrees or less with the main platform. In some embodiments, in the open position, the wheel frame is approximately perpendicular to the main platform.
In some embodiments, the handles rotatably couple to vertical support bars of the main platform and are configured to be locked in the backwards-facing orientation and in the outward-facing orientation. In further embodiments, a pin is used to lock the handles in the backwards-facing orientation and in the outward-facing orientation.
In some embodiments, the telescoping ram stop includes telescoping cylinders that are in a shortened configuration in the open position and in a lengthened configuration in the closed position.
For purposes of summarizing the disclosure, certain aspects, advantages and novel features have been described herein. It is to be understood that not necessarily all such advantages may be achieved in accordance with any particular embodiment. Thus, the disclosed embodiments may be carried out in a manner that achieves or optimizes one advantage or group of advantages as taught herein without necessarily achieving other advantages as may be taught or suggested herein.
The headings provided herein, if any, are for convenience only and do not necessarily affect the scope or meaning of the claimed subject matter.
Overview
Disclosed herein are hand trucks for installing and removing water heaters. A typical hand truck is not suitable for installing and removing water heaters for a number of reasons. First, it may be difficult to lift a water heater onto a platform (e.g., an 18-inch platform) without the help of a second person. Typically, a plumber uses a bear hug method to remove and replace a water heater which puts stress on the body and risks possible injury on the installers back. Second, a typical hand truck cannot keep a water heater above a water heater pan during installation or removal. Accordingly, disclosed herein are hand trucks for water heaters that enable a single person to lift the water heater onto a platform and to keep the water heater above the water heater pan during installation and removal.
The disclosed hand trucks are simple in design and do not include cranks or pulleys. The disclosed hand trucks are designed to be operated by a single person. This advantageously reduces labor costs associated with installation and removal of water heaters. The disclosed hand trucks include a design tailored to the installation and removal of water heaters, with tailored features that facilitate such procedures relative to generic hand trucks.
The disclosed hand trucks generally include a main platform and a wheel frame. A water heater is strapped to the main platform which has curved legs at the bottom with rubber landing feet. This design with the curved legs is used to keep the water heater above a water heater pan while lifting the water heater into position. This avoids crushing the pan with the water heater. The handles at the upper section of the main platform have adjustable positions. These handles can be opened up (e.g., rotated) to an outward position to provide leverage, which can be advantageous when access to the platform is limited from a frontal approach. For example, when only one leg can make contact with the platform, the water heater can still be easily lifted and installed.
The wheel frame includes a curved foot to increase or maximize the leverage and to increase or maximize the height a person is able to lift a water heater. This is advantageous where platforms may be unusually high, such as exceeding 18 inches. The wheel frame also includes a telescopic ram stop that has been designed to guide the wheel frame from a typical hand truck position to an open position. A pin is installed in the open position to secure the wheel frame in place. In the open position, the hand truck is ready to be pulled back and used to wheel the water heater into position in preparation for installation.
The disclosed hand trucks provide a number of benefits. For example, the hand trucks facilitate lifting a water heater into position to a degree that is unexpected. The disclosed hand trucks can also be used to remove a water heater from a platform when the water heater is still full of water. The disclosed hand trucks can fold up like a ladder and can be stored easily in a service van or truck.
Example Water Heater Hand Trucks
The main platform 110 of the hand truck 100 includes a pair of vertical support bars 111, a pair of rotating handles 112 coupled to the vertical support bars 111, an upper cross bar 113 extending between the vertical support bars 111, a lower cross bar 114 extending between the vertical support bars 111, and curved legs 115 with rubber stoppers 116 or rubber landing feet, the curved legs 115 being a lower extremity of the vertical support bars 111. It is to be understood that the word vertical as it is used with respect to the vertical support bars 111 means a direction that runs lengthwise along the main platform 110. Consequently, the vertical support bars 111 may only be truly vertical when the hand truck 100 is in the closed position and balanced upright (e.g., as illustrated in
The wheel frame 120 of the hand truck 100 includes the telescoping ram stop 125, a pair of wheel support bars 124 rotatably coupled to the vertical support bars 111, wheels 126 at distal ends of the wheel support bars 124, and axle 128 extending between the wheels 126. In some embodiments, the hand truck 100 includes a single pair of wheels. In certain embodiments, the hand truck 100 does not include wheels at distal ends of the vertical support bars 111.
Each wheel support bar 124 is rotatably coupled to a corresponding vertical support bar 111 at a hinge 117 such that, when transitioning the hand truck 100 from a closed position to an open position, the wheel support bars 124 rotate away from the vertical support bars 111. The wheel support bars 124 can be configured to be approximately parallel to the vertical support bars 111 in the closed position and approximately, but not necessarily, perpendicular to the vertical support bars 111 in the open position. In some embodiments, the angle formed by the vertical support bars 111 and the wheel support bars 124 is less than 90 degrees in the open position and greater than 0 degrees in the closed position. Thus, the hinges 117 enable rotation while the telescoping ram stop 125 limits the range of rotation of the wheel support bars 124 relative to the vertical support bars. The combination of these elements enables and limits rotation of the wheel support bars between about 0 degrees (e.g., parallel) and about 90 degrees (e.g., perpendicular).
The telescoping ram stop 125 is made of telescoping rods 122 (e.g., nested cylinders) that enable extension of the ram stop 125 between a shortened configuration (e.g., in the open position of the hand truck 100) and a lengthened configuration (e.g., in the closed position of the hand truck 100). The telescoping ram stop 125 includes a main bar support 121 that connects to and extends between the vertical support bars 111. The telescoping ram stop 125 also includes a wheel bar support 123 that connects to and extends between the wheel support bars 124. A pin can be used to secure the telescoping rods 122 in the open position and the closed position. In the open position (
It should be noted that the hand truck 100 does not include a horizontal ledge or foot at the bottom of the vertical support bars 111 like a typical hand truck for moving boxes or other heavy items. The elimination of the bottom ledge improves the installation procedure for the water heater as it makes it easier to position the water heater in the water pan without contacting the water pan while moving the water heater into place. Furthermore, without the bottom ledge it is easier to remove the hand truck 100 after the water heater has been positioned in the water pan. Without a bottom ledge, straps or other elements can be used to secure the water heater to the main platform 110 rather than relying on the water heater sitting on the bottom ledge.
The handle 712 includes a c-shaped grip bar 752 that is rotatably coupled to a vertical support bar 711 (similar to the vertical support bar 111 described herein with reference to
In some embodiments, rather than including vertical support bars, as illustrated herein, other configurations may be used. As an example, a curved or flat piece of metal or other material can be used with curved legs extending from a bottom portion of the piece of material and with handles extending from top portion of the piece of material. In some embodiments, more than 2 vertical support bars may be used in the hand truck (e.g., 3, 4, 5, or more vertical support bars). In some embodiments, a single vertical support bar is used along a majority of the length of the main platform with a pair of curved legs extending from a bottom part of the vertical support bar and with a pair of handles extending from a top part of the vertical support bar. In such embodiments, top and bottom cross bars can be used with the single vertical support bar extending between them. The handles and legs can extend from the top and bottom cross bars, respectively, in such implementations. Other configurations are within the scope of this disclosure as well, including other shapes for the rotating handles other than those illustrated. In addition, the curved legs need not be curved, strictly speaking, and may be angled rather than curved or curved and angled to provide the desired feature of supporting a water heater above a water pan during installation. Furthermore, two or more telescoping ram stops may be used rather than a single telescoping ram stop, as illustrated.
The hand truck 1000 includes a main platform 1010 and a wheel frame 1020. The main platform 1010 of the hand truck 1000 includes a pair of vertical support bars 1011, a pair of rotating handles 1012 coupled to the vertical support bars 1011, an upper cross bar 1013 extending between the vertical support bars 1011, a lower cross bar 1014 extending between the vertical support bars 1011, and curved legs 1015 with rubber stoppers 1016 or rubber landing feet, the curved legs 1015 being a lower extremity of the vertical support bars 1011, curved relative to the vertical support bars 1011. The hand truck 1000 can be transitioned between an open position and a closed position, similar to the hand truck 100.
The wheel frame 1020 of the hand truck 1000 includes a telescoping ram stop 1025, a pair of wheel support bars rotatably coupled to the vertical support bars 1011, wheels at distal ends of the wheel support bars, and an axle extending between the wheels, similar to the hand truck 100.
The telescoping ram stop 1025 is made of telescoping rods 1022 (e.g., nested cylinders) that enable extension of the ram stop 1025 between a shortened configuration (e.g., in the open position of the hand truck 1000) and a lengthened configuration (e.g., in the closed position of the hand truck 1000). The telescoping rod 1022 includes a hinged connector 1027 that is configured to connect to a main bar support to secure it to the main platform 1010 of the hand truck 1000. The telescoping rod 1022 also includes hinged connector 1029 that is configured to connect to a wheel frame support to secure it to the wheel frame 1020 of the hand truck 1000.
The handles 1012 include a pin configuration to enable rotation and locking of the handles in a backward-facing orientation and in an outward-facing orientation. The handles 1012 include a c-shaped grip bar that is rotatably coupled to the vertical support bar 1011 using a collar 1054. The collar 1054 couples the c-shaped grip bar to a top end of the vertical support bar 1011. The collar 754 allows for relative rotation between the c-shaped grip bar and the vertical support bar 1011. The collar 754 can be configured to lock the c-shaped grip bar in the backwards-facing orientation and the outwards-facing orientation using a pin 1057. In some embodiments, a pin can be used to lock the handle in the two different orientations, not necessarily exactly backward-facing and/or outward facing. For example, a first lockable orientation can be one designed to facilitate maneuvering the water heater into place whereas a second orientation can be one designed to improve leverage to facilitate lifting the water heater onto a platform and/or over a water pan.
The curved legs 1115 can also be curved using other curved configurations, such as an “S” curve similar to the curved legs 115 described herein. In some embodiments, the curved legs 1115 can be bent rather than curved. In some embodiments, the amount of deviation from the vertical support bars 1111 can be suitable to clear a water pan when installing a water heater. In some embodiments, the angle of the rubber feet of the curved legs can be suitable to provide sufficient grip when the hand truck 1100 is approximately horizontal and to maintain the grip as the hand truck is rotated from approximately horizontal to approximately vertical.
The present disclosure describes various features, no single one of which is solely responsible for the benefits described herein. It will be understood that various features described herein may be combined, modified, or omitted, as would be apparent to one of ordinary skill. Other combinations and sub-combinations than those specifically described herein will be apparent to one of ordinary skill, and are intended to form a part of this disclosure.
Unless the context clearly requires otherwise, throughout the description and the claims, the words “comprise,” “comprising,” and the like are to be construed in an inclusive sense, as opposed to an exclusive or exhaustive sense; that is to say, in the sense of “including, but not limited to.” The word “coupled”, as generally used herein, refers to two or more elements that may be either directly connected, or connected by way of one or more intermediate elements. Additionally, the words “herein,” “above,” “below,” and words of similar import, when used in this application, shall refer to this application as a whole and not to any particular portions of this application. Where the context permits, words in the above Detailed Description using the singular or plural number may also include the plural or singular number respectively. The word “or” in reference to a list of two or more items, that word covers all of the following interpretations of the word: any of the items in the list, all of the items in the list, and any combination of the items in the list. The word “exemplary” is used exclusively herein to mean “serving as an example, instance, or illustration.” Any implementation described herein as “exemplary” is not necessarily to be construed as preferred or advantageous over other implementations.
The disclosure is not intended to be limited to the implementations shown herein. Various modifications to the implementations described in this disclosure may be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other implementations without departing from the spirit or scope of this disclosure. The teachings of the invention provided herein can be applied to other methods and systems, and are not limited to the methods and systems described above, and elements and acts of the various embodiments described above can be combined to provide further embodiments. Accordingly, the novel methods and systems described herein may be embodied in a variety of other forms; furthermore, various omissions, substitutions and changes in the form of the methods and systems described herein may be made without departing from the spirit of the disclosure. The accompanying claims and their equivalents are intended to cover such forms or modifications as would fall within the scope and spirit of the disclosure.
This application claims priority to U.S. Prov. App. No. 63/087,347 filed Oct. 5, 2020 and entitled “WATER HEATER HAND TRUCKS,” which is incorporated by reference herein in its entirety for all purposes.
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Translated copy of DE-102018005082-A1 (Year: 2023). |
Number | Date | Country | |
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20220105972 A1 | Apr 2022 | US |
Number | Date | Country | |
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63087347 | Oct 2020 | US |