Patent ID: 7316520
Filing Date: 2008-01-08
Classification: E01C

Abstract:
1. An apparatus for shearing an asphalt mixture on a surface, said apparatus comprising: a prime mover that provides a pugmill for dispensing said asphalt mixture wherein said prime mover has brackets secured thereto; and an implement having a framework that is fixedly held by said brackets of said prime mover wherein said implement has no wheels and wherein said apparatus has no wheels that travel behind said implement, wherein said implement is comprised of: (a) a blade capable of shearing said asphalt mixture on said surface wherein said blade is moveable while said framework of said implement remains fixedly held; (b) a proximity control device coupled with said blade for directly raising and lowering said blade in response to elevational changes in said surface wherein said proximity control device and said blade are not coupled using tow arms and said blade is not raised and lowered through a tow point; (c) at least one signal generator associated with said proximity control device and adapted to produce a signal indicative of the elevation of said surface; and (d) at least one signal receiver associated with said proximity control device and said signal generator, whereby said blade is raised or lowered substantially instantaneously as said surface elevation changes in response to signals emanating from said generator.