US 7,550,045 B2
	Metal surface coating treatment device and surface coated metal manufacturing method
Nobuharu Hama, Hachinohe (Japan)
Assigned to Tamagawa Seiki Co., Ltd., Nagano (Japan)
Appl. No. 10/490,371 PCT Filed Sep. 26, 2002, PCT No. PCT/JP02/09990 § 371(c)(1), (2), (4) Date Sep. 20, 2004, PCT Pub. No. WO03/028901, PCT Pub. Date Apr. 10, 2003.
Claims priority of application No. 2001-338751 (JP), filed on Sep. 29, 2001.
Prior Publication US 2005/0031800 A1, Feb. 10, 2005
Int. Cl. B05C 3/00 (2006.01)

U.S. Cl. 118—423  [118/712]

3 Claims

1. A metal surface coating treatment device comprising magnetic floating means for floating a treated metal in the air; optical control means for preventing attraction of the floated treated metal to said magnetic floating means; a storage tank for storing a liquid coating material for coating treatment of the surface of the treated metal; and vertical moving means for vertically moving said magnetic floating means to adhere the liquid coating material to the whole of surface of the treated metal by immersing and pulling up the treated metal in and from said storage tank, characterized in that said optical control means comprises an optical sensor for detecting approach of the treated metal being floated by said magnetic floating means to said magnetic floating means and a control circuit for processing a signal detected by said optical sensor to control strength with respect to magnetic attracting operation of said magnetic floating means.