Patent ID: 8533900

Claim:
A flat blade wiper, comprising: an elastic metal keelson strip; a saddle bracket of a wiper adapter; two clipping sleeve mounts; two external covers; and an elongated scraping blade, wherein said elastic metal keelson strip is a straight flat flexible metal band of rectangular shaped cross section, has a pair of parallel long lengthwise edges and a pair of parallel short transverse edges, wherein said saddle bracket of wiper adapter is mounted over the center of the elastic metal keelson strip, and serves as a linking articulation for the wiper arm after having coupled the wiper adapter, wherein each said clipping sleeve mount is a unitary extruded semi-rigid plastic adapted hollow band for sleeving over the elastic metal keelson strip, has a top surface, a bottom sole, and two long lengthwise shoulders as well as two short transverse sides, wherein an accommodating channel, which is created between the two long lengthwise shoulders in a parallel manner to run through both short transverse sides, contains an upper accommodating channel of a big rectangular cross section formed near the top surface thereof and an abutted lower accommodating channel of a small rectangular cross section formed near the bottom sole thereof; a longitudinal gap is created between the lower accommodating channel and the bottom sole to parallel with two long lengthwise shoulders, a pair of horizontal clipping juts are created between the internal wall of the lower accommodating channel to abut against both sides of the longitudinal gap and extending in parallel to a plane of the bottom sole, and a lateral elongated groove is inwardly created in each long lengthwise shoulder in a parallel manner respectively to run through both short transverse sides such that its gap width is smaller than its internal width; wherein each said external cover is a unitary extruded soft plastic adapted inverted U shaped hollow band to envelop over the surface of the two clipping sleeve mounts, has a top surface, a bottom sole and two long lengthwise shoulders as well as two short transverse sides, wherein a pair of parallel protruding docking bars are juxtaposed on internal walls of a two long lengthwise shoulders; and wherein said elongated scraping blade is a unitary extruded soft resilient adapted band to be clipped inside two horizontal clipping juts of the clipping sleeve mount, has an upper wing section, a middle neck section, and a lower scraping edge with a tapering tip formed at a bottom side, wherein said middle neck section juxtaposes a pair of symmetric longitudinal grooves inwardly formed on both sides thereof.