The new millennium remote agent: To boldly go where no ai system has gone before

A vacuum cleaner having a selectively positionable stop for retaining the handle structure in an intermediate position between an upright storage position and a lowered, operating position. The positionable stop may be carried on a pivoted casing associated with the handle structure and a cooperating shoulder element may be movably carried on the floor cleaning unit for engaging the intermediate stop. The shoulder element may be movably carried on the cleaning unit so as to pass the intermediate stop when desired.