Patent ID: 6840332
Filing Date: 2005-01-11
Classification: E01C

Abstract:
1. A vehicle drawn road scraper comprising: a frame having a forward laterally extending frame member with substantially parallel oppositely positioned first and second side frame members interconnected at their rear ends by an angularly extending frame member which extends from the first side frame member rearwardly and laterally towards the second side frame member, said first side frame member being shorter than said second side frame member, a plurality of angularly and forwardly positioned ground engaging blades extending angularly from the second side frame member rearwardly and laterally towards the first side frame member and said angularly extending frame member, a ground engaging rear blade having forward and rearward ends on said angularly extending frame member whereby ground material loosened by said angularly and forwardly positioned blades includes first pieces which are moved into engagement with said rear blade on said angularly extending frame member with first pieces moving under said blade on said angularly extending frame member and second pieces being moved angularly along said rear blade on said angularly extending frame member and being further reduced in size such that loose ground material is redistributed onto the road surface, and a dam blade being positioned rearwardly of said plurality of angularly positioned blades and between said second side frame member and said rear blade on said angularly extending frame member, said dam blade terminating rearwardly in spaced relationship to said rear blade thereby creating a passageway therebetween for loose material boiling up between said rear blade and said dam blade being partially discharged through said passageway.