Patent ID: 11950739
Assignee: ILLINOIS TOOL WORKS INC.
Field: Furniture, games (Other fields)
Classification: CPC A | IPC A

Claim 10:
11. A wash arm of a commercial dishwasher, the wash arm comprising:
a wash arm housing which extends in a longitudinal direction and in which at least one inlet for supplying washing liquid and at least one nozzle opening for spraying the supplied washing liquid are formed, wherein at least one cleaning opening with an assigned opening/closing mechanism is provided at at least one end region of the wash arm housing, wherein the opening/closing mechanism is designed to automatically open for thorough rinsing of at least one region of the wash arm housing as required and to automatically close for ending the thorough rinsing of the at least one region of the wash arm housing as required;
wherein the opening/closing mechanism has an in particular spherical closure element which is accommodated in a cage region, serves as a shut-off body and is designed and/or mounted in the cage region in such a manner that the closure element is movable relative to the wash arm housing and relative to the cage region and relative to the at least one cleaning opening, which is assigned to the opening/closing mechanism, between an open position, in which the at least one cleaning opening is fluidically connected to the inlet of the wash arm, and a closed position, in which a fluidic connection between the at least one cleaning opening and the inlet is interrupted, wherein the closure element and the cage region are designed in such a manner that the closure element is transferred by the water pressure prevailing in the interior of the wash arm housing into its closed position and is held there as soon as a static pressure in the interior of the wash arm housing reaches or exceeds a minimum pressure value, and that the closure element transfers by gravity into its open position as soon as a static pressure in the interior of the wash arm housing falls short of the minimum pressure value.