Patent ID: 7107709

Claim:
An articulated scraper blade system mounted to a snowplow blade installed in front of a vehicle, for snow scraping, said blade system comprises a multitude of carbide sections capable of moving independently when they strike an obstacle on a road surface, said blade system further comprising: a forward plate member having spaced and aligned slip gaps formed therein, wherein each said slip gap allows said plate member to be raised automatically when it strikes an obstacle on the road surface, and lowered automatically by a spring exerting a spring force for snow scraping; the forward plate member includes a snow deflector formed on a lower portion of the forward plate member, said snow deflector configured to avoid accumulation of residue and ice inside the blade system; said forward plate member also includes an iron pin which receives said spring, with said spring engaging a flat washer, said spring positioned within a vertically extending upper portion of a structural plate member, said vertically extending upper portion configured to allow removal of said spring, said spring blocked in place by a bolt which is engaged in a threaded aperture; and said forward plate member being connected to said structural plate member and said snowplow blade by means of additional bolts, each said additional bolts passing through an iron wedge engaged inside each said slip gap, each said additional bolt further extending through additional apertures formed in said structural plate member, and wherein each said additional bolt is blocked in place by a nut.