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1. (WO2019033155) GOULOTTE À DÉBRIS
Note: Texte fondé sur des processus automatiques de reconnaissance optique de caractères. Seule la version PDF a une valeur juridique


Patents Act 1990


for the invention titled

"Debris Chute"

The invention is described in the following statement:



The present invention relates to gravity type conveyors or chutes which are often used for dropping building and demolition waste from any floor of the building in a controlled manner. The object of the present invention is to provide a system for debris removal process at construction sites more effective and convenient.

Prior art entails nesting performed prefabricated cylindrical tubes, or chutes constructed on site from ply or other materials. Problems that often arise include upstream openings are at the wrong height, side openings at lower levels are at inconvenient heights and that side openings and the openings at the upper end are too small a diameter to be useful. Thus it is an object of this invention to provide prefabricated material chute sections which can be united to form a single gravity chute having a plurality of openings from one or more sides through which operators can drop material into the chute at any level with an overall opening as large as possible. A related problem is the use of the chute at different levels at the same time whereby debris may bounce through a lower vertical opening. It is an object of this invention to install a warning system indicating the operation of any one side opening.

This invention comprises a debris chute in the shape of a rectangular chute section made up of 8 interchangeable individual panels nested with other sections to form a debris chute fitted with side openings as required for accepting and transporting material conveyed by the chute.

The side opening consists of a panel that is hinged at the either the bottom of the panel, top of the panel or on the top and bottom so as to open the panel sideways so as to allow rotation.

The panels of the present invention can be supported on to an existing structure such as scaffolding eliminating the need for a separate structure. Each of the panels of the present invention can be attached to an existing structural support frame such as scaffolding by brackets or by other attaching means.

The prefabricated chute sections of the present invention are interchangeable, easily transported and easily erected and disassembled on site.

It is another object of this invention to provide sections having side openings covered by doors.


According to the principles of the invention a series of eight individuals panels make up an octagonal conveyor chute section such that the eight panels are connected to each other to form an enclosed shaft or passage in which individual panels are supported onto a structure such as existing scaffolding or a frame.

The individual plates are hung on horizontal members of the existing structure by hooks attached to the individual panels or a inverted u shaped channel at the top edge of each panel formed by folding the panel. The panels are located in such a way as to overlap with each other and also the panels immediately below to prevent any leakage of debris through corners and provide a smooth passage for falling debris material. Up to four of the central panels on all four sides can be replaced by rotatable/hinged doors at levels determined by the horizontal ties of the external support structure. The corner panels are made slightly wider than the diameter of the largest vertical support member.

The angle of the door panels can be adjusted to suit the method of disposing the material and or to deflect and eliminate the possibility material bouncing out of the chute.

Main advantages of the present invention are its simplicity, ability to install or hang on an existing structure such as a scaffolding and the ability to dismantle and transport easily. In addition, the panels of the present invention can be used on a structure of any size by hanging overlapping side panels and door panels.

The panels can be made out of any rigid material such as steel, plastic, Aluminium or even timber (plywood).

Detail Description of the invention

The figure 1 as shown represents a corner panel of the present invention.

The figure 2 as shown represents a side panel of the present invention.

Figure 3 as shown represents a door panel showing additional supporting channels on either side.

Figure 4 represents a schematic chute of the present invention in fully assembled.

The invention is described below in detail with reference to the drawings.

The corner panel as shown in figure 1 . As shown in figure 1, the corner panel is made by folding one piece in the middle as to form two symmetrical sides. The angle between the sides can be anything from about 90 degrees to 120 degrees.

The top of each side of the corner panel is folded at the top to form a lip or a u-fold (3,7) which can be used to hang the corner panel on an existing structural frame. The middle fold (5) is created to prevent any interference with an vertical support of an existing structural frame such as scaffolding.

Figure 2 of the present invention illustrates a side panel of the present invention. It is folded at the top to form a U-fold or lip (3,7) which can be used for hanging on a horizontal element of an existing structural frame such as scaffolding.

Figure 3 is an illustration of the door panel of the present invention. Similar to side panels of the present invention, the door panel is folded at the top end to form a u-fold or a lip (3,7) which can be used for hanging from a horizontal member of an existing structural frame such as a scaffolding. In addition, it has a striker (12), stiffener (11) with a bar and striker support, hinge (13) and a stop (10) to prevent the door panel from falling in. Item 19 is a spring-loaded catch.

Figure 4 shows the present invention is use with side panels and door panels hung on horizontal members of an existing support structure such as a scaffolding. The corner panels (1) are attached at the four corners around the vertical frame (23) as shown. The side panels (8) are hung from the horizontal elements (21)on three sides as shown. On the third side, the door panel (9) is hinged at the bottom and chains (15 ) from the horizontal member immediately above. Flexible bellows (13) prevents any material falling through sides when the doors are open. A dust cover (16) can be positioned at any point of the vertical structure to prevent escape of any dust.