Joseph F Karpov

US Patent:

6485846, Nov 26, 2002

Filed:

Sep 29, 2000

Appl. No.:

09/675225

Inventors:

Alexander L. Zheleznyakov - Doylestown PA
Joseph F. Karpov - Yardley PA

Assignee:

Ametek, Inc. - Paoli PA

International Classification:

B32B 1501

US Classification:

428671, 428673, 428674, 428675, 428636, 428646, 73732

Abstract:

A component for a gauge comprising a bourdon tube having a first end and a second end. A socket is joined to the first end of the bourdon tube and a closure member is joined to the second end of the bourdon tube. At least one of the bourdon tube and the closure member comprises a copper nickel alloy and/or the socket comprises a nickel silver alloy. In addition, a low temperature soldering material, such as a tin-bismuth soldering material, was used to affix the socket to the bourdon tube and the closure member to the bourdon tube. Preferably, the components contain substantially no free copper. Such a component resists corrosion, especially corrosion formed when certain fluids are used with such components.