US Patent 10368707 Adjustable vacuum tube clamp assembly and vacuum cleaners including same

A vacuum cleaner tube assembly includes an outer tube defining a vacuum passage extending from a first end to a second end and an inner tube disposed at least partially within the vacuum passage and connected to the outer tube for telescopic adjustment. The inner tube includes a first end and a second end distal from the first end. The vacuum tube assembly further includes an adjustment clamp connected to the second end of the outer tube. The adjustment clamp includes a clamp body with an inner diameter connected to the second end of the outer tube. The adjustment clamp also includes a lever connected to the clamp body and moveable between a first, latched position and a second, unlatched position to permit selective adjustment of the inner diameter of the clamp body and selective clamping between the clamp body and the inner tube.