Patent ID: 7421755

Claim:
A wiper blade assembly pivotally attached to a distal portion of a wiper arm, the assembly comprising: a wiper blade having a coupling portion, wherein the coupling portion has a coupling shaft and an insertion opening to which the distal portion of the wiper arm is inserted; and a coupling device pivotally supported by the coupling shaft, wherein the coupling device includes: a base member to which the distal portion of the wiper arm is attached; and a locking member having a locking portion and a cover, wherein the locking member is movable relative to the base member between an engage position and a disengage position, wherein, when the locking member is located at the engage position, the locking portion is engaged with the distal portion of the wiper arm, and the engaged parts of the distal portion of the wiper arm and the locking portion are covered with the cover, wherein the wiper arm includes a retainer extending along a longitudinal direction of the wiper arm and an arm piece extending from a distal end of the retainer, wherein the cover extends from the locking portion to the boundary between the retainer and the arm piece.