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:
Apr. 26, 1977
Filed:
Mar. 10, 1976
Technion Research and Development Foundation Ltd., Haifa, IL;
Other;
Abstract
The method of converting clayey or silty soil into stable and solid underground columns or piles suitable for carrying a building structure, comprises first the drilling of bores of a diameter considerably smaller than the external diameter of the column or pile to be created, to a predetermined depth, and secondly directing a focused laser beam gradually across the entire surface of each bore by mechanical and optical means, in such a manner that each point of the bore surface is irradiated and heated at an intensity sufficient for converting the soil surrounding the bore into a solid permanent mass of a predetermined thickness measured from the bore surface, which mass retains its strength and is resistant to moisture and temperature.