公开(公告)号：US06819039B2

公开(公告)日：2004-11-16

申请号：US10328840

申请日：2002-12-24

Applicant: Shigeo Fujihara ,  Osamu Odani

Inventor： Shigeo Fujihara ,  Osamu Odani

IPC: H01J3100

CPC classification number: H01J29/861

Abstract: Pad portions are respectively integrally protruded to be formed on an outer surface of a substantially funnel-shaped sidewall portion of the glass funnel for projection. A ridgeline for a reference end face formed on the pad portion comprises a first curved portion to form a top portion and second curved portions to form rising portions. The first curved portion and the second curved portions are smoothly continuous to each other without bending portions. The second curved portion is smoothly continuous to the outer face of the sidewall portion without bending portions.

Abstract translation: 垫部分分别一体地突出以形成在用于投影的玻璃漏斗的大致漏斗形的侧壁部分的外表面上。 形成在焊盘部分上的参考端面的棱线包括形成顶部的第一弯曲部分和形成上升部分的第二弯曲部分。 第一弯曲部和第二弯曲部在没有弯曲部的情况下彼此平滑地连续。 第二弯曲部分在没有弯曲部分的情况下平滑地连续到侧壁部分的外表面。