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Class Information
Number: 404/84.5
Name: Road structure, process, or apparatus > Apparatus > Automatic control > Of material leveling means > Adjusted to an acoustical or optical signal
Description: Automatic adjustment of leveling means wherein the adjustment is made to track an acoustical or optical signal, e.g., laser.


Patents under this class:
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Patent Number Title Of Patent Date Issued
7399139 Apparatus and method for three-dimensional contouring Jul. 15, 2008
7316520 Low surface area shearing device Jan. 8, 2008
RE39834 Apparatus and method for three-dimensional contouring Sep. 11, 2007
7204657 Lightweight self-leveling automatic screed apparatus Apr. 17, 2007
7195423 Powered strike-off plow Mar. 27, 2007
7144191 Apparatus and method for three-dimensional contouring Dec. 5, 2006
7108450 Portable drag box with automated shearing device Sep. 19, 2006
7044680 Method and apparatus for calculating and using the profile of a surface May. 16, 2006
7004676 Fly max power trowel Feb. 28, 2006
6929420 Apparatus and method for three-dimensional contouring Aug. 16, 2005
6830409 Concrete placing and screeding machine Dec. 14, 2004
6821052 Modular, robotic road repair machine Nov. 23, 2004
6758631 Portable screed guidance system Jul. 6, 2004
6749364 Temperature sensing for controlling paving and compaction operations Jun. 15, 2004
6736216 Laser-guided construction equipment May. 18, 2004
6729796 Transducer arrangement for screed control May. 4, 2004
6672797 Linear transducer arrangement Jan. 6, 2004
6558073 Portable, oscillating grade determinant apparatus incorporating laser signal receiver May. 6, 2003
6530721 Method for control system setup Mar. 11, 2003
6530720 Transducer arrangement for screed control Mar. 11, 2003
6352386 Road finisher having a laying beam with automatically adjustable extendable beams Mar. 5, 2002
6238135 Paver having adjustable screed angle using a tamper bar May. 29, 2001
6227761 Apparatus and method for three-dimensional contouring May. 8, 2001
6220780 Apparatus for translocating lane divider Apr. 24, 2001
6183160 Screeding apparatus and method incorporating oscillating attachment Feb. 6, 2001
6171018 Automatic control system for construction machinery Jan. 9, 2001
6152647 Screeding method incorporating oscillating member Nov. 28, 2000
6113309 Uniform compaction of asphalt concrete Sep. 5, 2000
5988936 Slip form control system for tight radius turns Nov. 23, 1999
5984420 Grade averaging system with floating boom and method of using the same Nov. 16, 1999
5752783 Paver with radar screed control May. 19, 1998
5599134 Asphalt paver with compaction compensating system Feb. 4, 1997
5588776 Paving machine having automatic metering screed control Dec. 31, 1996
5567075 Offset screed system and quick connect mounting therefore Oct. 22, 1996
5556226 Automated, laser aligned leveling apparatus Sep. 17, 1996
5546123 Automatic steering device for asphalt finisher Aug. 13, 1996
5533790 Floor milling machines Jul. 9, 1996
5388927 Raiseable pan drag apparatus Feb. 14, 1995
5387051 Levelled cement spreader for laying tiles Feb. 7, 1995
5362176 Road construction apparatus and methods Nov. 8, 1994
5288167 Laser beam guidance device for civil engineering/earthmoving plant Feb. 22, 1994
5288166 Laser operated automatic grade control system for concrete finishing Feb. 22, 1994
5258961 Ultrasonic sensor control unit for a road finishing machine Nov. 2, 1993
5234281 Deflection indicating adjustable highway straight-edge Aug. 10, 1993
5201604 Field configurable sonic grade control Apr. 13, 1993
5190396 Concrete leveling apparatus Mar. 2, 1993
5039249 Apparatus for screening and trowelling concrete Aug. 13, 1991
5009546 Road paver-finisher with a combination of axles with steering wheels and crawler units Apr. 23, 1991
4978246 Apparatus and method for controlling laser guided machines Dec. 18, 1990
4943119 Height control device and method for a fixture for machining an object essentially defined by a single plane Jul. 24, 1990

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