Invention Grant
- Patent Title: Unitized chemically etched tungsten electrode
- Patent Title (中): 单位化学蚀刻钨电极
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Application No.: US11498346Application Date: 2006-08-03
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Publication No.: US07218046B2Publication Date: 2007-05-15
- Inventor: Dean A. Bell , Timothy D. Russell
- Applicant: Dean A. Bell , Timothy D. Russell
- Applicant Address: US NY Skaneateles Falls
- Assignee: Welch Allyn, Inc.
- Current Assignee: Welch Allyn, Inc.
- Current Assignee Address: US NY Skaneateles Falls
- Agency: Marjama & Bilinski LLP
- Main IPC: H01J17/18
- IPC: H01J17/18

Abstract:
A method of making a unitized tungsten electrode which exhibits superior mechanical and electrical properties which includes providing a length of cylindrical cut stock having a predetermined diameter and length. The stock is ground to form a rough unfinished electrode having an enlarged tip or nose portion at one end integrally connected to an elongated shank section. The unfinished electrode is treated by exposure to a chemical etchant for a time sufficient to form a finished electrode characterized by a smooth nose and shank surface and rounded undercut and ends. The invention includes the electrode formed by the described process.
Public/Granted literature
- US20060270306A1 Stable electrode design and method Public/Granted day:2006-11-30
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