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:
Sep. 21, 2010
Filed:
Oct. 20, 2005
Masahide Uchino, Tokyo, JP;
Masahide Uchino, Tokyo, JP;
Japan Field Co., Ltd., Tokyo, JP;
Abstract
A filtration device for a surface treatment liquid, in which deposited precipitates can be quickly transferred regardless of the magnitude of the diameter, material, and the like, of particles contained in a used surface treatment liquid. Further, the precipitates are not influenced by the flow caused by the transfer, so that such a situation that the deposited precipitates rise to flow into a surface treatment tank can be prevented. The filtration device for a surface treatment liquid comprises a surface treatment tank in which the surface of an object is treated by a surface treatment liquid; a pool tank connected to a pressure reduction mechanism and communicated with the surface treatment tank through interconnection control valve, in which the pool tank, when its communication with the surface treatment tank is interrupted by the closure of the interconnection control valve after the internal pressure is reduced to a predetermined level by the pressure reduction mechanism, performing in the surface treatment tank surface treatment of the object by utilizing negative pressure to collect and receive the contaminated surface treatment liquid; and a participates liquefaction tank that communicates with the lower end of the pool tank through a communication pipe provided with an open/close valve and into which the participates in the pool tank is introduced.