Patent ID: 8905328

Claim:
A light cleaning device for motor vehicles comprising: an elongate housing formed with an inlet port connectable to a source of pressurized cleaning fluid; a retractable hollow cleaning liquid supply tube slidably arranged within the housing and being biased in a retracted position; at least one spray nozzle provided at a distal end of the cleaning fluid supply tube; a fluid valve at a proximal end of the cleaning liquid supply tube allowing ingress of the cleaning fluid into the tube once the fluid pressure exceeds a predetermined amount; wherein the valve is designed as a springless valve; wherein the cleaning fluid supply tube comprises an elastically deformable sealing member sealingly engaging the housing, the sealing member forming part of the valve; wherein the sealing member comprises at least one fluid ingress opening which has a surrounding rim being formed as a deflectable sealing lip which in non-pressurized condition sealingly engages a valve seat and is disengageable from the valve seat by a pressure of the cleaning fluid and in that the sealing member is made from a resilient material such that the sealing lip returns in its closed position by resultant tensile forces stored within its material upon a pressure relief; wherein the sealing member and valve seat are distinct components; wherein the valve seat is mounted stationary to the fluid supply tube; and wherein the valve seat is defined by a mandrel extending into the fluid ingress opening and having a diameter which is at least as large as the diameter of the fluid ingress opening.