DISPOSITION APPLIED TO MULTIBASE WHEELBARROW
The multi-base hand truck with concentric bases and a foldable T-handle addresses instability issues in transporting gas cylinders and water jugs, ensuring stability and safety with ergonomic handling.
Patent Information
- Authority / Receiving Office
- BR · BR
- Patent Type
- Utility models
- Filing Date
- 2024-12-23
- Publication Date
- 2026-07-07
AI Technical Summary
Existing single-base folding hand trucks for transporting gas cylinders and water jugs are unstable due to differences in volume and shape, leading to a displaced center of gravity, increased risk of tipping, and accidents, especially on uneven terrain, and pose safety hazards.
A multi-base hand truck with concentric, pivoting rectangular bases, one for the water jug and another for the gas cylinder, ensuring stable support and balance through the central base accommodating the jug and the outer base supporting the cylinder, combined with a foldable T-handle for ergonomic handling.
Enhances stability and safety during transport, reducing the risk of accidents and physical effort, while being compact and easy to store.
Smart Images

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Description
1 / 5 DISPOSITION APPLIED TO MULTIBASE WHEELBARROW INTRODUCTION
[001] This utility model patent application relates to a “DISPOSITION APPLIED TO A MULTIBASE HANDCART” which reveals a multifunctional cart with two concentric bases pivoting around a common plane that allows the loading of objects of different volumes and dimensions, which after use can be folded to occupy reduced space. FIELD OF APPLICATION
[002] Applies to the delivery services, warehouses and trade segment in the transport and movement of materials / products between 10kg and 40kg, preferably gas cylinders and water jugs. CONVINCING
[003] It is known to those skilled in the art that single-base folding hand trucks, designed for transporting 13 kg gas cylinders and 20-liter water jugs, frequently exhibit instability during movement.
[004] The variation in volume and shape between these two types of load, combined with the single base, results in a displaced center of gravity, increasing the risk of tipping and accidents, especially on uneven terrain or when going up and down stairs.
[005] Gas cylinders have a cylindrical shape with a narrow base followed by a large body and a high center of gravity, while water jugs, despite having a slightly wider base, have a single-filar body that favors stability. The single base of the cart, usually narrow, offers a reduced support area for loads, to the detriment of objects such as gas cylinders, which are susceptible to movement and misalignment from the base during transport, shifting the center of gravity and increasing instability.
[006] When starting to move, changing direction or braking abruptly, the inertia of the load generates forces that tend to unbalance the cart when loaded with larger loads, especially on irregular surfaces, such as uneven floors, ramps or steps, as well as on ascents and descents, which can contribute to imbalance. Petition 870250046711, dated 05 / 06 / 2025, page 5 / 10 2 / 5
[007] Gas cylinders and water jugs can be damaged if dropped, resulting in leaks and safety hazards. Another point to consider is that the operator may suffer injuries such as bruises, abrasions, and fractures in case of accidents. Finally, instability makes moving the cart difficult, making transport slower and more laborious.
[008] In this context, new technologies that guarantee stability and safety in cargo transportation are welcome in the segment in question. STATE OF THE ART
[009] The current state of the art includes some patent documents concerning carts for transporting cargo, such as PI 9704454-7 A entitled “MULTI-UTILITY CART” - characterized by consisting of a basic structure composed of a handle with a grip and hook that ends together with a frame, composed of hollow parts, equipped with fittings, support pins, and a horizontal axle with wheels, which is provided with a hook and articulated support feet, and the fittings are capable of being coupled to a curved element by means of pins.
[010] The document above anticipates a cart for transporting gas cylinders and water jugs with a base, which generates instability, making it necessary to use an upper support arm to anchor the transported product.
[011] Document MU 7401119-7 entitled “CART FOR TRANSPORTING GAS CYLINDERS” - characterized by being constructed in four articulated parts, called the support base for the cylinder, which contains two wheels at the rear and a support point at the front; the column fixed to the base by a rotating movement so that it can be disassembled by folding; the upper rim fixed to the column also by a rotating movement in order to engage the upper part of the cylinder; the retractable rod introduced is internally limited by a protrusion on the column and has the function of, when pulled upwards, locking automatically, thus facilitating the position for moving the cart both forward and backward, due to the strategic positioning of the wheels, making it possible to travel on uneven floors, as well as to climb stairs. Petition 870250046711, dated 05 / 06 / 2025, p. 6 / 10 3 / 5
[012] In the document above, the cart, despite being foldable, is specifically designed for transporting gas cylinders.
[013] Patent document BR 202022012518-5 U2 entitled “CONSTRUCTIVE ARRANGEMENT APPLIED IN A FOLDABLE CART FOR TRANSPORTING CARGO” - designs a cart used for transporting gas cylinders, water jugs, bags and packages; characterized by having a lower base containing a hand rod with height adjusted by means of a screw; the lower base containing wheels for its movement and two joints with locks responsible for receiving the product support rods; the first product support rod (8) having a hook that receives bags, a central hook responsible for locking the handle of gas cylinders, and having a central ring that fixes the jug nozzle; the second product support rod being responsible for supporting packages and the lower part of the jug.
[014] In the document above, the cart has a single base for the gas cylinder and the water jug, and for product stabilization it uses an articulated arm around the midpoint of its column, which makes its construction complex. INNOVATION OBJECTIVES
[015] The present innovation proposes an arrangement applied to a multi-base hand truck with pivoting bases, one for a gas cylinder and another for a water jug, with a stop for the cylinder in order to guarantee safety during transport.
[016] The present innovation proposes an arrangement applied to a lightweight, easy-to-handle multi-base wheelbarrow, reducing the risk of injury.
[017] The present innovation proposes an arrangement applied to a multi-base wheelbarrow capable of promoting safer transport for different types of load.
[018] The present innovation proposes an arrangement applied in a multi-base paint wheel adaptable to different environments (home, car, industry) and products (gas cylinder, water jug, etc.).
[019] The present innovation proposes an arrangement applied to a multi-base wheelbarrow with an excellent cost-benefit ratio. GENERAL DESCRIPTION OF THE MODEL Petition 870250046711, dated 05 / 06 / 2025, page 7 / 10 4 / 5
[020] The “ARRANGEMENT APPLIED TO A MULTI-BASE HAND CART” is designed to facilitate the transport of heavy objects such as gas cylinders and water jugs.
[021] It has two rectangular, concentric bases, pivoting in a front plane coinciding with the wheels, making the cart more stable and easier to maneuver. The central base perfectly accommodates the water jug, while the outer base serves as a stop for the body of the gas cylinder, which has its base equally supported on the central base, preventing it from rolling, ensuring that the transported objects remain firm and secure during movement. To make transport even more practical and comfortable, the cart has an ergonomic T-shaped handle, which offers greater control and reduces physical effort. Storage and safekeeping are facilitated, since the bases are foldable, as is the T-handle; with a simple movement, the cart becomes compact, occupying little space at home, in the warehouse, or in vehicles. DESCRIPTION OF THE DRAWINGS
[022] The model will now be described in detail, and for better understanding, reference will be made to the attached drawings, in which the following figures are represented: Figure 1: Perspective view of the arrangement applied to a multi-base wheelbarrow; Figure 2: Exploded perspective view of the arrangement applied to a multi-base wheelbarrow; Figure 3: Detail of the bases of the arrangement applied to a multi-base wheelbarrow; Figure 4: Front view of the arrangement applied to a multi-base wheelbarrow, with the bases retracted; Figure 5: Rear cutaway view of the arrangement applied to a multi-base wheelbarrow, with the bases retracted; Figure 6: Perspective view of the arrangement applied to a multi-base wheelbarrow, showing the transport of a water gallon; Petition 870250046711, dated 05 / 06 / 2025, page 8 / 10 5 / 5 Figure 7: Perspective view of the arrangement applied to a multi-base hand truck, showing the transport of a gas cylinder. DETAILED DESCRIPTION OF THE INNOVATION
[023] The “ARRANGEMENT APPLIED TO MULTIBASE WHEELBARROW”, the subject of this utility model patent application, stands out for using concentric bases, preferably rectangular, one central (3) and another external (4), which rotate around the axis (12) of the wheels (5) central axis, pivoted on the hinges (13, 14) respectively, which allows the volume / contour of the water gallon (6) and the gas cylinder (7) to be distributed uniformly, ensuring greater stability and facilitating maneuvers, even on uneven terrain.
[024] More specifically, the claimed innovation relates to a “DISPOSITION APPLIED TO A MULTIBASE HANDCART” consisting of a structure with a vertical column (1) and a “T” handle (2) with two concentric bases (3, 4), supported on wheels (5), one being a central base (3) and an external base (4), wherein the internal central base (3) supports the water gallon (6), while the external base (4) extends to the body of the gas cylinder (7), preventing it from rolling, and chains (8) projecting from the crossbar (9) prevent the said external base (4) from rotating freely, adapting to the weight and shape of the objects. The T-handle (2), with adequate height, facilitates handling and reduces physical effort during transport. Both the bases (3, 4) and the vertical column (1) and “T” handle (2) are foldable, which makes the stroller (10) compact and easy to store when not in use.The outer base (4) is traversed, in its rear profile (11), by the axle (12) of the wheels (5) which pivots in relation to the vertical column (1) thanks to the central hinge (13). On the other hand, the central base (3) is pivoted by means of two hinges (14) fixed to the rear profile (11). Thus, the concentric bases (3, 4) ensure the stability of the load, minimizing the risk of accidents, and the pivoting system allows the dynamic distribution of the load, optimizing the balance of the cart and facilitating maneuvers on different terrains. Petition 870250046711, dated 05 / 06 / 2025, page 9 / 10
Claims
1 / 1 CLAIM 1) “ARRANGEMENT APPLIED TO MULTIBASE WHEELBARROW”, consisting of a structure with a vertical column (1) and “T” handle (2) with two bases (3, 4) with wheels (5) and T handle (2); both the bases (3, 4) and the vertical column (1) and “T” handle (2) are foldable, characterized by using two concentric bases (3, 4); a central base (3) and an external base (4); the central base (3), internal, supports the water gallon (6), while the external base (4) extends to the body of the gas cylinder (7); chains (8) project from the crossbar (9); the external base (4) is traversed, in its rear profile (11), by the axle (12) of the wheels (5) which pivots in relation to the vertical column (1) thanks to the central hinge (13); the central base (3) is pivoted by means of two hinges (14) fixed to the rear profile (11). Petition 870240109454, dated 12 / 23 / 2024, page 10 / 21