Abstract: A cold rolled steel flat product for packaging made of a low carbon steel having a thickness of less than 0.49 mm and a method of making. The steel flat product has a martensite-free microstructure and represents a standard grade for packaging with tensile strengths from 300 to 550 MPa, which can be produced from a cold-rolled steel sheet with a carbon content from 0.01% to 0.1% by weight by inductive annealing of the steel sheet and subsequent water cooling for quenching the recrystallization-annealed steel sheet. To achieve flatness of 5 I-units or less, the induction annealed steel sheet is first primarily cooled in the manufacturing process to a take-off temperature at a rate of less than 1000 K/s, with the take-off temperature being below the transformation temperature of 723° C., and thereafter a secondary cooling by water cooling with a water temperature of less than 80° C. at a rate of more than 1000 K/s.

Abstract: A wall repair system includes a balloon that can be inflated within a wall space behind a hole in the wall. The balloon itself, or a backer board attached to the balloon, can provide a surface for placement or build-up of wall repair compound so that the repaired wall has substantially the same thickness of the original wall and so that no tape or patch needs to be placed on top of the wall along any location surrounding the hole. The backer board can have one or more threaded holes therethrough where a threaded rod can be inserted into the threaded holes to contact a wall surface opposite the hole, causing the backer board to stay in place against the back side of the wall having the hole therein, thus blocking all or a part of the hole.

Abstract: A toy racing car can be propelled via various manners, including, for example, a pull-back recoil mechanism, a remote-control driven battery powered mechanism, or the like. The toy car can include one or more activators that, when activated by an impact against another object, eject the “driver” in the car or a portion thereof, such as a head that extends from the toy car.