Abstract: The present specification relates to an adjustable seat for a wheelchair, the seat being adapted to be removably arranged in the wheelchair, the seat comprising a first rolling element, a carrying element, a supporting structure adapted to support the first rolling element and the carrying element, an endless belt, at least one of the first rolling element and the endless belt further comprising means for providing an engagement between the first pulley and the endless belt, and means for applying a rotational motion to the first rolling element. The first rolling element is arranged to be rotatably supported by the supporting structure, the endless belt is adapted to rotate about the first rolling element and the carrying element, wherein the first rolling element is a drive rolling element adapted to transfer a rotational motion induced by said means for applying a rotational motion to said at least one first rolling element to said endless belt.

Abstract: In a vessel utilized for providing powdered materials, such as binder, for the construction of an in-situ piling, the vessel has a binder feeding system having a fluidization chamber, where the fluidization chamber receives air at a higher pressure than the substantial portion of the remainder of the vessel. This higher pressure enhances the fluidization of the powered materials as the materials are dispersed through an actuated valve at the bottom of the vessel. This system results in a decreased volume of air required for transporting the powdered materials through the feeder hose to the tool in the piling borehole, thereby reducing the creation of air pockets in the in-situ piling. This feeder system replaces the cell wheel currently used in binder feeder systems.

Abstract: In a vessel utilized for providing powdered materials, such as binder, for the construction of an in-situ piling, the vessel has a binder feeding system having a fluidization chamber, where the fluidization chamber receives air at a higher pressure than the substantial portion of the remainder of the vessel. This higher pressure enhances the fluidization of the powered materials as the materials are dispersed through an actuated valve at the bottom of the vessel. This system results in a decreased volume of air required for transporting the powdered materials through the feeder hose to the tool in the piling borehole, thereby reducing the creation of air pockets in the in-situ piling. This feeder system replaces the cell wheel currently used in binder feeder systems.