Patent ID: 8336165

Claim:
An upright vacuum cleaner for cleaning a surface, the upright vacuum cleaner comprising: an upper body having a dust collection container disposed therein; a base unit; a carriage configured to move the base unit on the surface; a tilting joint disposed between the base unit and the upper body, the tilting joint being operable to provide tilting of the upper body relative to the base unit about a horizontal axis from a vertical parked position to an inclined tilted operating position; a swivel joint disposed between the base unit and the upper body, the swivel joint being operable to provide a change in a direction of travel of the base unit by twisting the upper body; and a rotation-locking device configured to lock the upper body against rotation when the vacuum cleaner is in the parked position, wherein the rotation-locking device includes a first spring-mounted pin configured to engage a bore when the upper body is in the parked position.