Electroplated stator bar end and fitting

• US 7,166,941 B2
• Filed: 11/18/2004
• Issued: 01/23/2007
• Est. Priority Date: 11/18/2004
• Status: Expired due to Fees

• Current Assignee: General Electric Company
• Original Assignee: General Electric Company
• Inventors: Wang, Yu
• Primary Examiner(s): LE, DANG D
• Application Number:
  US10/990,958
• Publication Number:
  US 20060103244A1
• Time in Patent Office: 796 Days
• Field of Search: 310/260, 310 52- 65, 310195-208
• US Class Current: 310/54
• CPC Class Codes: C25D 21/10 Agitating of electrolytes; Moving of racks
• CPC Class Codes: C25D 7/04 Tubes; Rings; Hollow bodies
• CPC Class Codes: H02K 15/0093 Manufacturing or repairing cooling fluid boxes, i.e. terminals of fluid cooled windings ensuring both electrical and fluid connection
• CPC Class Codes: H02K 15/12 Impregnating, heating or drying of windings, stators, rotors or machines

Abstract

The interior of a stator bar clip that is joined to the end of a stator bar is electroplated so that a metallic barrier coating overlies the braze joint between the stator bar and the clip to define a seal at and around the joint that is substantially impermeable to liquid.

Claims

1. A stator bar end and a fitting receiving the end to define a seal substantially impermeable to liquid, the fitting having a chamber for receiving a liquid through an opening in the fitting and in communication with hollow strands forming at least a portion of said stator bar and for flow of the liquid through the hollow strands, wherein at least a portion of an interior surface of said fitting has a metallic layer disposed thereon, wherein said metallic layer is deposited by electroplating,

wherein said metallic layer has a thickness of about 1 to 3 mm, and

wherein said metallic layer is disposed to overlie a junction between said stator bar end and said fitting.

2. A stator bar end and a fitting receiving the end to define a seal substantially impermeable to liquid, the fitting having a chamber for receiving a liquid through an opening in the fitting and in communication with hollow strands forming at least a portion of said stator bar and for flow of the liquid through the hollow strands, wherein at least a portion of an interior surface of said fitting has a metallic layer disposed thereon, wherein said metallic layer is deposited by electroplating,

wherein said metallic layer comprises a first electroplated metallic layer covered by a second electroplated metallic layer over the first electroplated layer and wherein said first and second plated layers are comprised of different metals, and

wherein said first and second electroplated metallic layers are disposed to overlie a junction between said stator bar end and said fitting.