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. 08, 2004
Filed:
Dec. 04, 2001
Nagayoshi Myo, Tokyo, JP;
Akira Iwasaki, Tokyo, JP;
Hiroshi Okada, Tokyo, JP;
Kuniaki Yamanaka, Tokyo, JP;
Koji Nagaoka, Tokyo, JP;
Mamoru Shiratori, Tokyo, JP;
Freund Industrial Co., Ltd., Tokyo, JP;
Abstract
A centrifugal tumbling granulating apparatus comprises a fixed wall having a grain contact portion which is in contact with powder grains and of which a horizontal section is formed in a circular shape, and a rotating disk provided a clearance away from an inner side of the fixed wall and rotating in a horizontal direction by a motor , wherein an air supply device for supplying drying air to an upper surface side of the rotating disk is provided above the rotating disk . The air supply device has a cylindrical straight tube portion , and an air supply port formed in a cone shape, and is disposed in a centrifugal tumbling chamber to be movable in an up-and-down direction. During a granulating step, the air supply device stops to supply the dry air and waits at an upper position H. After the granulation processing, the air supply device is lowered at a lower position L and supplies the dry air onto the rotating disk to dry granulated substances. As a result, the granulating apparatus capable of efficiently obtaining, in a single apparatus, spherical particles of which each particle size is small and which exist within a narrow range of particle size distribution and of which deviation from spherical form is small is provided.