Methods for forming faucets and fixtures

A faucet and body technology, applied in the field of single metal structure, can solve the problems of expensive, corrosion, oxidation, etc.

Inactive Publication Date: 2012-05-30
哈维苏
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This specification generally represents the state of the art in investment casting available today for the manufacture of stainless steel utility faucets, the forming process has severe limitations that not only limit the functionality and aesthetics of the unit, but also require costly and complex auxiliary processes such as Welding, multi-piece assembly, and other steps that may introduce oxidation, corrosion, failure points, and / or unwanted manufacturing expenditure

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  • Methods for forming faucets and fixtures
  • Methods for forming faucets and fixtures
  • Methods for forming faucets and fixtures

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Embodiment Construction

[0029]Typically, soft metal shapes are formed using sand or die casting (carbon steel molds). Casting stainless steel using sand casting is difficult because the sand mold becomes unstable at elevated temperatures (greater than 1475°C). Furthermore, casting stainless steel using steel-to-steel (die) casting is difficult without severe deformation of the tooling components. The investment casting method of embodiments of the present invention advantageously enables the formation of stainless steel appliances without the problems of prior art casting methods.

[0030] The methods of aspects and embodiments of the present invention can be used to form appliances, such as one-piece faucets with multiple chambers. Utensils formed by methods of embodiments of the present invention are substantially non-toxic, patina-free, and comply with environmental regulations and regulatory limits for toxic compounds. The method of the preferred embodiment of the present invention enables the ...

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Abstract

This invention provides methods for forming stainless steel, single-piece, multi-chambered water faucets and fixtures with a single one-body construction. A variety of stainless steel products can be formed with a main body having an internal hollow region and a plurality of dividing chambers. The main body may be constructed using high temperature resistant ceramic cores in combination with a lost wax investment casting process. The stainless steel products formed from a single piece construction can eliminate the need for additional time-consuming manufacturing steps, such as parts welding, screw assembly, or precision press fitting. In addition, water faucets and fixtures can be provided that are substantially lead-free, non-verdigris, and non-toxic in compliance with environmental regulations and lead / toxic limits.

Description

[0001] cross reference [0002] This application claims priority to US Provisional Application No. 61 / 269609, filed June 26, 2009, which is hereby incorporated by reference in its entirety. technical field [0003] The present invention relates to investment casting ("IC"). More specifically, the present invention relates to processes and structures formed from ceramic cores for lost-wax investment casting, thereby enabling the production of monolithic metal structures formed with single or multiple interior chambers. Background technique [0004] Environmental concerns surrounding pollution and today's economic development are forcing changes in the design and manufacture of faucets traditionally constructed from soft metal alloys containing lead (Pb). Over the centuries, this traditional manufacturing process has evolved from sand casting to shell molding and even permanent mold casting. This process typically utilizes low temperature metal alloys that require casting te...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22D19/00B22D23/00B22C9/04B22C9/22B22C9/10
CPCB22C9/22B22C9/04B22C9/10B22C7/02B22D25/02B22D29/002
Inventor D・孙M・W・维里麦克
Owner 哈维苏
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