公开(公告)号：US20040007978A1

公开(公告)日：2004-01-15

申请号：US10603348

申请日：2003-06-25

Applicant: Welch Allyn, Inc.

Inventor： Dean A. Bell

IPC: H01J017/18

CPC classification number: H01J61/073 ,  H01J5/32 ,  H01J61/0732 ,  H01J61/366 ,  H01J61/82

Abstract: The invention relates to a tungsten electrode which causes minimal cracking when sealed in a quartz glass envelope. The invention includes forming a substantially uniform oxide coating on a selected portion of the shank of a tungsten electrode followed by reducing the oxide coating to substantially elemental tungsten, wherein the electrode exhibits superior properties when sealed in a lamp having a quartz glass envelope. The invention also includes the electrode made by the process.

公开(公告)号：US20040140290A1

公开(公告)日：2004-07-22

申请号：US10746991

申请日：2003-12-24

Applicant: Welch Allyn, Inc.

Inventor： Dean A. Bell ,  Timothy D. Russell

IPC: B05D005/12 ,  B44C001/22

CPC classification number: H01J61/06 ,  C23F1/04 ,  H01J9/02

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.

Abstract translation: 一种制造单位钨电极的方法，其表现出优异的机械和电学性能，其包括提供一定长度的具有预定直径和长度的圆柱形切割料。 将原料研磨以形成粗糙的未完成的电极，其在一端与扩展的柄部一体地连接，具有扩大的尖端或鼻部。 未完成的电极通过暴露于化学蚀刻剂来处理足以形成成品电极的时间，其特征在于具有光滑的鼻部和柄表面以及圆形底切和末端。 本发明包括通过所述方法形成的电极。

公开(公告)号：US20030137248A1

公开(公告)日：2003-07-24

申请号：US10319755

申请日：2002-12-13

Applicant: Welch Allyn, Inc.

Inventor： Dean A. Bell ,  Richard A. Mechowski

IPC: H05B039/04

CPC classification number: F21V29/67 ,  F21V29/02 ,  G03B21/2026

Abstract: A method for thermal control of a lamp assembly which includes an arc lamp, fan and an associated reflector enclosed within a sealed module. The method includes providing a predetermined air flow path within said module whereby a continuous flow of ambient air is passed over said lamp during lamp operation which reduces the operating temperature of the lamp and increases lamp life, and further including an opening or vent adjacent to the fan which functions to reduce the fan temperature in operation thereby increasing the operating life of the fan.

Abstract translation: 一种用于灯组件的热控制的方法，其包括弧形灯，风扇和封闭在密封模块内的相关反射器。 该方法包括在所述模块内提供预定的空气流动路径，由此在灯操作期间环境空气的连续流动通过所述灯，这降低了灯的工作温度并且延长了灯的使用寿命，并且还包括邻近 风扇，其功能是降低操作中的风扇温度，从而增加风扇的使用寿命。