Abstract: A renovation liner is installed in a pipework. More particularly, an end of the renovation liner is closed by an elastic end piece. The renovation liner is impregnated with a hardening impregnating agent. The renovation liner, together with its end piece, is slipped into a position in the pipework to be renovated. A pressure is provided and maintained in a space formed by the renovation liner and the elastic end piece in order to press the renovation liner against walls of the pipework until the impregnating agent of the renovation liner has hardened in shape. The elastic end piece is removed.

Abstract: A method for preparing a resizing sleeve for lining a joining point in a pipe assembly having pipes of thicker and thinner diameter. The method includes stretching the resizing sleeve in diameter to the size of the thicker pipe in diameter of the pipe assembly, installing an installation hat according to the thicker pipe in diameter of the pipe assembly by airtightly gluing it onto the stretched resizing sleeve, and returning the resizing sleeve to the size of the thinner pipe in diameter of the pipe assembly to be lined. A suitable tool for implementing the method is also disclosed.

Abstract: The cleaning device is for cleaning a pipe before lining of the pipe and for removing a collapsed liner inside the pipe. The cleaning device has a connector for a drive shaft, a body rotatable around a rotation axis with the drive shaft and grinding cutters pivotally attached to the body by pins. The cutters have cutting edges provided on outer periphery of the cleaning device and the pivotal connection to the body allows for the cutters to turn and increase the diameter of the cleaning device until the cutters face an obstacle.

Abstract: A cleaning device for cleaning an inner surface of a pipe. The cleaning device has first and second bodies each having a connector for connecting a drive shaft and being rotatable about a rotation axis with the drive shaft. The cleaning device also has multiple link connections defined in said first body and in said second body and multiple chains of links extending between the link connections of said bodies. The links consist of a helically wound metal wire for detachably connecting the links to each other and/or to the link connections. At least a part of said links has a tip of the helically wound metal wire bent radially outwardly from said helical winding for cleaning the inner surface of the pipe when the first body and the second body are rotated with the drive shaft.

Abstract: The grinding device is for removing a collapsed liner inside a pipe. The grinding device has a connector for a drive shaft, a body rotatable around a rotation axis with the drive shaft and grinding cutters attached to the body. The grinding cutters have cutting edges provided in a plane perpendicular to the rotation axis of the body and the grinding device further has an outer periphery isolated from rotation of the body by bearings.

Abstract: The method is for manufacturing a tube in which a stretching film is fastened for a length of over one turn on both sides of a tube mesh that is only expandable on a circumference thereof. Each film is also fastened to itself. An expandable tube is formed which is expandable to a circumference allowed by the tube mesh.

Abstract: The device is for opening up a branch point of a pipe assembly. The device has a tip part arranged to be rotated, in connection with which there is at least one blade, and spring-loaded discs and protrusions which are separate from the tip part and arranged to remain essentially non-rotating as the tip part is rotated.

Abstract: The branch piece is for renovating a pipeline and has a main line pipe and at least one branch pipe connected with the main line pipe. The branch piece is elastic and has an inner sheathing, an outer sheathing and, at least on a part of the branch piece, a flexible reinforcement layer disposed between the inner sheathing and the outer sheathing. The branch piece regains its shape after compression.

Abstract: The safety device is to be installed in a well. The safety device is has a support structure that is arranged to be lowered at least partly into the well and that restricts the movement of the safety device in the horizontal direction. A collar is in connection with the support structure and arranged to be set against the ground to restrict the movement of the safety device in the vertical direction, with a protective structure arranged on the collar to define a safe working area around the well.

Abstract: The elastic strap has, at each end, one or more formations, for instance protrusions and notches, which are shaped so as to lock with the formations of the opposite end such that detachment of the ends from one another requires the ends of the strap to be pulled in the longitudinal direction of the strap in mutually opposite directions while stretching the strap. The formations at the ends of the strap, after having been inserted into one another, lock the ends of the strap such that they do not move with respect to one another in directions perpendicular to the unfastening direction or in a direction opposite to the unfastening direction. The strap may be used for ensuring that a suitcase stays closed.

Abstract: A device used for cutting a pipe from an inside. The device has a spindle arranged to be rotated. The device further has protrusions fastened to the spindle and arranged to position the device or a part of the device inside the pipe. The protrusions have at least one blade arranged to machine material off the inner surface of the pipe to cut the pipe while the spindle is being rotated.

Abstract: The machining device is for machining the material of a pipe system that has a joint area between a pipe that has a smaller inner diameter and a pipe that has a larger inner diameter. The device has protruding parts that have been adapted to position the device inside the pipe that has the smaller diameter. A steerable actuator is adapted for removing material from the joint area and steering device for controlling the direction of the machining device in relation to the longitudinal axis of the pipe that has the smaller inner diameter while removing material from the joint area. The method is for machining material of the joint area that has a thinner and a thicker pipe.

Abstract: A renovation liner is installed in a pipework. More particularly, an end of the renovation liner is closed by an elastic end piece. The renovation liner is impregnated with a hardening impregnating agent. The renovation liner, together with its end piece, is slipped into a position in the pipework to be renovated. A pressure is provided and maintained in a space formed by the renovation liner and the elastic end piece in order to press the renovation liner against walls of the pipework until the impregnating agent of the renovation liner has hardened in shape. The elastic end piece is removed.

Abstract: The safety device is to be installed in a well. The safety device is has a support structure that is arranged to be lowered at least partly into the well and that restricts the movement of the safety device in the horizontal direction. A collar is in connection with the support structure and arranged to be set against the ground to restrict the movement of the safety device in the vertical direction, with a protective structure arranged on the collar to define a safe working area around the well.

Abstract: The device is for grinding a pipe from an inside. The device has a spindle arranged to be rotated. The device further has protrusions fastened to the spindle. The protrusions have a strip causing an elastic force when being bent. The protrusions are arranged to position the device or a part of the device inside the pipe. The protrusions have blades arranged to grind the inner surface of the pipe, while the spindle is being rotated.

Abstract: A device used for cutting a pipe from an inside. The device has a spindle arranged to be rotated. The device further has protrusions fastened to the spindle and arranged to position the device or a part of the device inside the pipe. The protrusions have at least one blade arranged to machine material off the inner surface of the pipe to cut the pipe while the spindle is being rotated.

Abstract: A flotation device is arranged to receive a compressed air cylinder. The flotation device includes an expansion part arranged to be expanded by compressed air and a guide for supplying compressed air from the compressed air cylinder to the expansion part. The expansion part is a silicone tube.

Abstract: The grinding device is for removing pipe renovation material from a pipe. The grinding device has at least one cutter, a body and fastening means for fastening the grinding device to a rotation shaft. The body and the at least one cutter are accomplished of a single piece for grinding pipe renovation material both in the forward direction of the grinding device and in a direction transverse to the forward direction. In addition, a system for removing pipe renovation material from the pipe and use of the grinding device for removing pipe renovation material from the pipe are disclosed.

Abstract: The machining device is for machining the material of a pipe system that has a joint area between a pipe that has a smaller inner diameter and a pipe that has a larger inner diameter. The device has protruding parts that have been adapted to position the device inside the pipe that has the smaller diameter. A steerable actuator is adapted for removing material from the joint area and steering device for controlling the direction of the machining device in relation to the longitudinal axis of the pipe that has the smaller inner diameter while removing material from the joint area. The method is for machining material of the joint area that has a thinner and a thicker pipe.

Abstract: The invention presents a power transmission device comprising a cable, and a duct at least partially surrounding the cable, a reel, into which the cable with its duct can be reeled, a guide for feeding the cable onto and/or off the reel, and a crank in connection with the head end of the cable for rotating the cable. The power transmission device is mainly characterized in that the crank is a hydraulic crank.