Window cleaning device

摘要

A window cleaning device of the type having a handle, a head attached to the handle and a sponge mounted in a longitudinal channel in the head of the washer is provided. A net-like web envelops the sponge. The cleaning device includes an improved stiffener having an elongate body provided with a pair of shoulders extending along the body on both sides thereof. A plurality of protrusions are integrally formed with and extend outwardly from the shoulders on both sides of the elongate body. The stiffener has a pair of flanges one located at each end of the elongate body for locating the body in the channel and preventing movement of the body in the channel. The protrusions act to compress multiple portions of the sponge between the ends of protrusions and the channel walls which creates a plurality of highly compressed areas at these points adjacent less compressed areas between the highly compressed areas into which excess sponge can flow. The action of the protrusions to grip the sponge on the interior thereof provides a firm anchor so that the sponge cannot be removed except by dislodging the stiffener from the channel. At the highly compressed areas portions of the sponge are forced through the perforations in the web thereby creating a locking effect between the sponge and web, similar to a peg through a hole, which provides increased gripping strength. The stiffener is injected molded from plastic.