Abstract: Flexible suspension of colter element (1) of a snowplough furnished with a body (5), a blade (3) as its extension, colter element (1) that gets in contact with the surface to be ploughed, where for the colter element (1) a tilt suited for the purpose is arranged, a.o. a cutting angle. Colter element (1) is fitted to dodge an obstacle in its cutting angle by backing up, whereby the fixing arrangement of colter element (1) has an open space formed for moving plate (13) fitted as extension of the colter element, in which space said moving plate is arranged to glide, and the arrangement includes a spring organ (9) the spring impact of which is arranged to hinder the colter element from backing up.

Abstract: A blade (3) meant to work in the curved form of a snow plough and attached from its lower edge to a rigid beam, the upper edge of which is supported by means of upper beam (12) or similar, and said blade is of flexible material, as plastic sheet. The blade is from its upper beam (12), essentially from its middle, supported by suspension means (9), which due to the ploughing load allows upper beam (12) and blade (3) upper edge to tilt and blade (3) to change the radius of curvature at least from the suspension spot on the blade area toward the blade point.

Abstract: Flexible suspension of colter element (1) of a snowplough furnished with a body (5), a blade (3) as its extension, colter element (1) that gets in contact with the surface to be ploughed, where for the colter element (1) a tilt suited for the purpose is arranged, a.o. a cutting angle. Colter element (1) is fitted to dodge an obstacle in its cutting angle by backing up, whereby the fixing arrangement of colter element (1) has an open space formed for moving plate (13) fitted as extension of the colter element, in which space said moving plate is arranged to glide, and the arrangement includes a spring organ (9) the spring impact of which is arranged to hinder the colter element from backing up.

Abstract: A blade (3) meant to work in the curved form of a snow plough and attached from its lower edge to a rigid beam, the upper edge of which is supported by means of upper beam (12) or similar, and said blade is of flexible material, as plastic sheet. The blade is from its upper beam (12), essentially from its middle, supported by suspension means (9), which due to the ploughing load allows upper beam (12) and blade (3) upper edge to tilt and blade (3) to change the radius of curvature at least from the suspension spot on the blade area toward the blade point .

Abstract: A brush assembly is provided in a movable sweeper in which the sweeper includes a vehicle frame to which a rotatable cylindrical brush is connected. The sweeper comprises a turning equipment to turn a brush frame around the vertical axle. The turning equipment comprises a first hydraulic cylinder by means of which an articulated auxiliary bar is turned around its articulating joint. A second hydraulic cylinder is fixed to the auxiliary bar from one of its ends and the second hydraulic cylinder is fixed to the brush frame on its other end. The working positions of the brush are obtained by driving one of the hydraulic cylinders to its longest or correspondingly shortest position. A transporting position for the brush is obtained by driving the other one of the cylinders (first or second one) to its extreme position.

Abstract: A coupling arrangement between a trailer and a pulling vehicle wherein the pulling vehicle includes a first coupling plate on which the corresponding second coupling plate of the trailer is placed for obtaining locked coupling. The plates have low friction surfaces allowing the second plate to rotate on the first plate. The plates are locked to each other by a vertical pin fixed to the second coupling plate. The first coupling plate includes an open groove for the pin to get into the locking position in the end of the groove. The coupling arrangement further includes a movable locking part fixed to the second plate and being able by means of a spring to move into the groove of the first coupling plate when the plates are rotating in relation to each other.

Abstract: A coupling arrangement between a trailer and a pulling vehicle wherein the pulling vehicle comprises first coupling plane on which the corresponding second coupling plane of said trailer is placed for obtaining locked coupling, said planes having low friction surfaces allowing said second plane to rotate on said first plane, said planes further being locked to each other by a vertical pin fixed to said second coupling plane wherein the first coupling plane comprises an open groove for said pin to get the locking position in the end of said groove, said coupling arrangement further comprising: a movable locking part fixed to said second plane and being able by means of a spring to move into the groove of said first coupling plane when said planes are rotating in relation to each other, wherein said locking part locating in said groove is locking said planes unrotatable, and for turning the steering wheels of said trailer said second coupling plane is arranged to rotate on said first coupling plane, and by mean

Abstract: A movable sweeper having a frame to which a rotatable cylindrical brush is coupled, a flap arrangement locating at least in front of the rotatable brush with the flap leading brushed loose water and snow to the side, an adjustable support wheel for controlling the height of the sweeper and a mechanism for adjusting the distance between the flap arrangement and the brush. The sweeper includes a rotatable axle, which has a plurality of fixing arms locating on the outer surface of the axle, a plurality of connection rods being fixed to the arms from their ends and the rods transmitting adjusting motion for the supporting wheel and the flap arrangement when the axle is rotated by an activator, like a hydraulic cylinder with the activator being fixed to the frame from its one end and to the arm on the axle from its other end.

Abstract: A group of enclosures for nursing and replanting plants is disclosed comprising several parallel rows of enclosures wherein each two adjoining rows of enclosures have a common wall construction. This wall permits the flow of nutrients and water through the wall and thus makes it possible to control and guide the growth of the roots.