Patent ID: 8485058

Claim:
An electric motor-driven kitchen appliance comprising: a main appliance housing; and an electric motor-gear stage arrangement provided within the main appliance housing, said arrangement comprising: an electric motor disposed within a motor housing, wherein the motor housing includes a motor housing end face, and the electric motor includes a motor shaft adapted to rotate about a motor rotational axis; a gear stage disposed within a gear case, wherein the gear case includes a gear case end face substantially parallel to and facing the motor housing end face, said gear case being separable from the motor housing, the motor housing and the gear case being provided within and separable from the main appliance housing; and a bayonet lock connecting the motor housing and the gear case, wherein the bayonet lock is positioned within the main appliance housing, the bayonet lock comprising: a first bayonet lock part on the motor housing end face, the first bayonet lock part being spaced radially outward from the motor rotational axis, the first bayonet lock part including one of a curved tongue and a curved slot, and a second bayonet lock part on the gear case end face, the second bayonet lock part being spaced radially outward from the motor rotational axis, the second bayonet lock part including the other of the curved tongue and the curved slot; wherein the bayonet lock is selectively movable between: a first, unlocked configuration, in which the motor shaft is rotationally interlocked with the gear stage, and the first bayonet lock part is circumferentially aligned with but rotationally offset from the second bayonet lock part with respect to the motor rotational axis, and a second, locked configuration, in which the motor shaft is rotationally interlocked with the gear stage, and the first bayonet lock part is rotated about the motor rotational axis into rotational alignment with the second bayonet lock part, such that the curved tongue and curved slot are engaged.