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:
Feb. 28, 1989
Filed:
Mar. 30, 1987
Jon A Haas, Oconomowoc, WI (US);
Other;
Abstract
A method for inhibiting roadbed erosion and damage to roadways utilizes an underdrain system for removing water which causes such damage. Underdrains in the form of perforate pipes, preferably covered with a geotextile sock as a filter, are disposed transversely to the lengthwise direction of the roadway in close proximity to faults, cracks, joints and other fissures in the roadway. The underdrains conduct water away from such fissures thereby preventing roadbed particulate material from being pumped upwardly through the fissures together with water which collects below the concrete roadway. Such an installation is highly useful for preventing further damage to existing roadways, and may be installed without interrupting traffic or destroying the road surface by means of a pneumatic underground piercing tool.