Abstract: A drink can induction heating apparatus includes a ferrite core having a plurality of projected portions and recesses formed between the adjacent projected portions. When a drink can is set in a position to be heated, each of the projected portions is oriented toward a longitudinal axis of the drink can and a particular portion of a circumferential wall of the drink can. The apparatus further includes a saddle-shaped heating coil which is partly received in the recesses of the ferrite core and covers a region around the foregoing particular portions of the drink can in a non-contact manner, and an inverter for feeding the AC power to the heating coil. The inverter is arranged to produce the AC power at a resonance frequency which corresponds to one of 5 kHz to 15 kHz where equivalent resistance values of an aluminum can and a steel can approximate to each other.

Abstract: An electric connecting device wherein a movable member can be locked with certainty with respect to a fixed member and the safety is assured even if such a locking mechanism is not removed. The electric connecting device comprises a resilient member removably mounted on one of the fixed member and the movable member for engaging with the other of the fixed member and the movable member. The movable member is thus normally held at its home position with respect to the fixed member by the resilient member, and after the electric connecting device is assembled to a predetermined device, the resilient member is removed. Even if the resilient member is otherwise left on the electric connecting device, it will not make an obstacle to rotation of the movable member.