Abstract: A wind driven craft comprising a body and a pair of wings extending therefrom. The wings are pivotally connected to the body of the craft. The wings provide lift and thrust to the craft such that it is able to move under influence of the wind.

Abstract: A fluid motor which is useful as a pump or as an hydraulic or pneumatic engine with a high torque low speed output. The fluid motor (10) comprises at least one drive disc (24) having a generally curved outer surface (42), at least one reciprocably mounted piston (26), the outer curved surface of the drive disc (24) being formed of alternating crests (44) and valleys (46) and there being provided a plurality of rollers (48) which are arranged to engage with the curved surface (42) of the drive disc (24), the number of rollers (48) and the number of crests (44) being different by at least one. Feeding fluid to the piston (26) causes the piston (26) to reciprocate so that the disc (24) is caused to undergo orbital movement and the housing (12) is thus caused to rotate.

Abstract: A tray loader includes a rail fixed to the load compartment of a vehicle. The rail has a rail part which can roll horizontally there along, which part in turn has a traveller horizontally rollable therealong. The traveller carries a post comprising telescoping parts. A single flexible device such as a chain, aided by the actuation of clutches between the rail part specifically between part 31 and the traveller and between the post and the rail, causes extension of the rail by lowering of the lower end of the post with its attached tray.