The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 08, 1994
Filed:
Feb. 16, 1993
Garry Bowhall, Champaign, IL (US);
Loren E Williams, Olney, IL (US);
Blaw-Knox Construction Equipment Corporation, Matoon, IL (US);
Abstract
An asphalt paver tows a device which measures smoothness of the fresh mat laid by the paver. The device measures the distance between the mat and a datum line as a function of paver position. Preferably, the rear reference beam of a dual reference beam paver is provided with a smoothness sensor. The rear beam is supported on two shoes riding on a fresh mat laid by the paver. A device to measure the distance from the beam to the mat such as a potentiometer is located near the center of the rear beam. The potentiometer has its shaft connected to a shoe by a lever so that vertical movement of the shoe rotates the shaft. Movement of the shoe is plotted against movement of the paver determined by a forward travel sensor. The plot shows smoothness of the mat.