Patent ID: 9655485
Date: 2017-05-23
CPC Classifications: A47L

Claim:
1. A nozzle assembly for use in a vacuum cleaner, the nozzle assembly comprising: an inlet opening; a height adjustment mechanism configured to adjust a vertical position of the inlet opening relative to a surface to be cleaned; a suction passage fluidly connected to the inlet opening; a bypass opening fluidly connected to the suction passage; a bleed valve comprising a closed position in which the bleed valve blocks the bypass opening, and an open position in which the bleed valve does not block the bypass opening to allow a flow of air through the bypass opening and into the suction passage, the bleed valve being operatively connected to the height adjustment mechanism and configured to move from the closed position to the open position in response to an adjustment of the height adjustment mechanism; and a resilient member configured to bias the bleed valve to the closed position.