Abstract: The present invention relates to a non-return valve (100) intended to be joined to a container (11) for air or liquids. The non-return valve is formed of non-rigid plastic or rubber material (1, 15), which forms reliable, tight non-return valve function in an opening channel (2) of the non-return valve. The invention is primarily characterized in that a resilient device (5) is arranged in a channel (50) arranged on the side of the opening channel (2) of the non-return valve and that said resilient device (5) extends from one side (52) of the channel (50) to the opposite side (52) of said channel (50). The invention also relates to a method for producing in a common stage the non-return valve together with a container (11) or for joining said non-return valve to a container (11) after the production of the non-return valve.

Abstract: The present invention relates to a method to, using self-vulcanizing material in the form of a narrow tape or thread (1), wind the tape or thread (1) around the sewing thread (7) of the sewed-on button (3) between the button (3) and a textile (2) in question a few turns, and after that, tear off the tape or thread (1). The remaining tape or thread (1) is pressed together using a pliers-like hand tool (4) into a soft neck (10), which within approx. two hours has been vulcanized together. Then, the sewing thread (7) does not unwind and the button (3) stably stays in place. The invention also relates to a means for carry out the method.

Abstract: The present invention relates to a non-return valve (100) intended to be joined to a container (11) for air or liquids. The non-return valve is formed of non-rigid plastic or rubber material (1, 15), which forms reliable, tight non-return valve function in an opening channel (2) of the non-return valve. The invention is primarily characterized in that a resilient device (5) is arranged in a channel (50) arranged on the side of the opening channel (2) of the non-return valve and that said resilient device (5) extends from one side (52) of the channel (50) to the opposite side (52) of said channel (50). The invention also relates to a method for producing in a common stage the non-return valve together with a container (11) or for joining said non-return valve to a container (11) after the production of the non-return valve.

Abstract: The present invention relates to a method to, using self-vulcanizing material in the form of a narrow tape or thread (1), wind the tape or thread (1) around the sewing thread (7) of the sewed-on button (3) between the button (3) and a textile (2) in question a few turns, and after that, tear off the tape or thread (1). The remaining tape or thread (1) is pressed together using a pliers-like hand tool (4) into a soft neck (10), which within approx. two hours has been vulcanized together. Then, the sewing thread (7) does not unwind and the button (3) stably stays in place. The invention also relates to a means for carry out the method.

Abstract: A method of fastening buttons by welding whereby a fusing device is used upon an accumulation of button threads thereby to create a substantially smooth surface. A device for using the method includes a thermal mandrel which may have a cutting surface on its outer edge. Multiple mandrels may be used to simultaneously fuse multiple buttons.

Abstract: A counting device to indicate a current score and intended to be worn by an individual participating in a sport. The device comprises annular indicator organs (1,2) provided with symbols (5) to indicate the score and an organ (7) with a read-off point (15). The indicator organs can be moved in relation to the read-off point so that different symbols can be advanced to that position. The main part of the device consists of soft, flexible material, preferably being some form of textile material. The device thus forms a soft, flexible, annular loop having a circumference such that it may be worn around the wrist, for example.

Abstract: A composite steel material consisting of two metallically joined steel components having different chemical compositions is disclosed. The first component is a high-speed tool steel or other high alloy tool steel having a carbon activity and a hardness and wear resistance in the same order as that of high speed tool steel. The second component is a steel consisting essentially of 0.40-0.45 weight percent carbon, 0.40-1.00 weight percent silicon, 0.40-1.00 weight percent manganese, 2.5-4.0 weight percent chromium, 0.50-1.50 weight percent molybdenum, 0.20-0.45 weight percent vanadium, balance iron and normal impurities.