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Title:
METHOD FOR MANUFACTURING UTENSIL FOR DRINKING WATER SYSTEM MADE FROM LEAD-CONTAINING COPPER ALLOY, CAST AND LEAD-REMOVED UTENSIL FOR DRINKING WATER SYSTEM, AND UTENSIL FOR DRINKING WATER SYSTEM
Document Type and Number:
WIPO Patent Application WO/2004/081257
Kind Code:
A1
Abstract:
A method for manufacturing a utensil for a drinking water system which comprises, provided prior to a cutting step (S30), a lead-removing step (S20) of immersing a cast article (10) in a lead-removing fluid, to subject the surface of the external circumference of the cast article (10) and the surface of the internal circumference of a passage (10a) for water to a lead removal treatment. The method allows the manufacture of a utensil for a drinking water system made from a lead-containing copper alloy, which achieves a satisfactorily small amount of lead eluted into water from the surface of the internal circumference of a passage for water and also exhibits excellent appearance.

Inventors:
FUKUNAGA NORIAKI (JP)
MURAMATSU HIDEO (JP)
SUZUKI TAKAO (JP)
NISHIKAWA TAKESHI (JP)
Application Number:
PCT/JP2004/002320
Publication Date:
September 23, 2004
Filing Date:
February 26, 2004
Export Citation:
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Assignee:
INAX CORP (JP)
FUKUNAGA NORIAKI (JP)
MURAMATSU HIDEO (JP)
SUZUKI TAKAO (JP)
NISHIKAWA TAKESHI (JP)
International Classes:
C23C22/07; C23F1/00; C23F1/44; E03C1/04; (IPC1-7): C23F1/44; C23C22/07
Domestic Patent References:
WO1999028536A11999-06-10
WO2002036856A12002-05-10
Foreign References:
JPH11510217A1999-09-07
Attorney, Agent or Firm:
Nakamura, Takashi (5th Floor 5th Watatsune Bldg., 8-24, Marunouchi 1-chome,, Naka-k, Nagoya-shi Aichi, JP)
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