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:
Jun. 25, 2013
Filed:
Aug. 10, 2006
Ichizo Kobayashi, Tokyo, JP;
Takeshi Sasakura, Tokyo, JP;
Toshiyuki Tanaka, Tokyo, JP;
Makoto Nakajima, Tokyo, JP;
Masaru Toida, Tokyo, JP;
Takahisa Isobe, Tokyo, JP;
Ichizo Kobayashi, Tokyo, JP;
Takeshi Sasakura, Tokyo, JP;
Toshiyuki Tanaka, Tokyo, JP;
Makoto Nakajima, Tokyo, JP;
Masaru Toida, Tokyo, JP;
Takahisa Isobe, Tokyo, JP;
Kajima Corporation, Tokyo, JP;
Abstract
The present invention provides a spray method and spray apparatus for bentonite-based material that allow forming a bentonite layer of high dry density. A spray apparatuscomprises a supersonic nozzle, to which a compressorand a bentonite containerare connected. The supersonic nozzleis fed compressed air from the compressorand a bentonite-based material from the bentonite container. The compressed air, mixed with the bentonite-based material, is accelerated to supersonic speed when passing through a constriction portionof the supersonic nozzle, and is sprayed at supersonic speed out of a jet orifice