Height adjustment system for vacuum cleaner

Details Height adjustment system for vacuum cleaner Height adjustment system for vacuum cleaner

A - Human Necessities

47

L

A47L 5/34 (2006.01)

Patent

CA 2086041

HEIGHT ADJUSTMENT SYSTEM FOR VACUUM CLEANER Abstract of the Disclosure A height adjustment system for an upright vacuum cleaner comprises a cam member with a cam surface. The cam member is mounted within a base and includes rollers which facilitate the sliding lateral movement of the cam member within the base. The rollers roll within a channel within the base. Notches are formed in the side walls of the channel and receive a resiliently deformable indexing member which locates and fixes a cam follower at discrete points along the cam surface. A secondary height adjustment means comprises a ledge located on a housing which is attached to a handle. When the handle of the vacuum cleaner is rotated from a use position to an upright locked position, the ledge on the housing displaces a finger which pushes against a fulcrum plate attached to an axle connected to the front wheels of the vacuum cleaner. When the axle is so displaced, the front wheels swing downwardly, thereby raising the rotating brush above the floor surface so that the floor surface to be cleaned is not damaged while the vacuum remains stationary.

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