Abstract: A door lock for locking a door to an underlying structure. A machine element disposed in connection to a through opening in the underlying structure is arranged so as to engage a bolt that is insertable into a through opening in the door. The machine element is inserted through the opening in the underlying structure to a position at which the openings in the door and the underlying structure form, together with the part of the machine element that extends outside of the underlying structure, a length that is longer than the bolt length, while at the same time an internal thread on the machine element extends sufficiently far through the underlying structure that, with the joint mounted, it engages the bolt to create the joint. Also, a method for manufacturing the door lock.

Abstract: The present invention concerns a door lock for locking a door (2) to an underlying structure (3). A machine element (6) disposed in connection to a through opening in the underlying structure (3) is arranged so as to engage a bolt (4) that is insertable into a through opening in the door (2). The door lock is characterized in that the machine element (6) is inserted through the opening in the underlying structure (3) to a position at which the openings in the door (2) and the underlying structure (3) form, together with the part of the machine element (6) that extends outside of the underlying structure (6) [sic], a length that is longer than the bolt length, while at the same time an internal thread on the machine element extends sufficiently far through the underlying structure that, with the joint mounted, it engages the bolt to create the joint. The invention also concerns a method for manufacturing the door lock as per the foregoing.

Abstract: The invention concerns a method for reinforcing a double-shell structure in which a cellular core (2) is arranged between a first shell (5) and a second shell (6). In the method according to the invention, at least one cavity is formed in the double-shell structure from an opening in the first shell into the cellular core (2) so that the cavity substantially extends through the cellular core (2) to the second shell. Fixative (8) is injected into the cavity. A stiff bar (7) is introduced into the cavity, whereupon excess fixative (8) is allowed to pass out of the cavity. Finally, the fixative left in the cavity is cured.

Abstract: The invention concerns a method for reinforcing a double-shell structure in which a cellular core (2) is arranged between a first shell (5) and a second shell (6). In the method according to the invention, at least one cavity is formed in the double-shell structure from an opening in the first shell into the cellular core (2) so that the cavity substantially extends through the cellular core (2) to the second shell. Fixative (8) is injected into the cavity. A stiff bar (7) is introduced into the cavity, whereupon excess fixative (8) is allowed to pass out of the cavity. Finally, the fixative left in the cavity is cured.