2nd anode button for cathode ray tube

• US 6,779,266 B2
• Filed: 08/30/2003
• Issued: 08/24/2004
• Est. Priority Date: 07/26/2002
• Status: Expired due to Fees

• Current Assignee: OSRAM Sylvania Inc. (Ams-Osram AG)
• Original Assignee: OSRAM Sylvania Inc. (Ams-Osram AG)
• Inventors: Aghamehdi, Hossein, Burwick, Jack L.
• Primary Examiner(s): Arbes, Carl J.
• Application Number:
  US10/651,767
• Publication Number:
  US 20040097142A1
• Time in Patent Office: 360 Days
• Field of Search: 298/74, 298/76, 298/78, 298/79
• US Class Current: 29/879
• CPC Class Codes: H01J 2229/925 associated with the high tension [HT], e.g. anode potentials
• CPC Class Codes: H01J 29/92 Means forming part of the tube for the purpose of providing electrical connection to it
• CPC Class Codes: Y10T 29/49204 Contact or terminal manufacturing
• CPC Class Codes: Y10T 29/49208 by assembling plural parts
• CPC Class Codes: Y10T 29/4921 with bonding
• CPC Class Codes: Y10T 29/49211 of fused material
• CPC Class Codes: Y10T 29/49213 Metal

Abstract

A connecting pin (10) for an anode contact (11) (shown more completely in FIG. 2). The pin (10) has a body (12) with a longitudinal axis (14). A contact head (16) is formed at a proximal portion of the body (12) and a base (18) is formed at a distal portion of body (12). An intermediate shank (20) connects the head (16) and the base (18). The head (16), base (18) and intermediate shank (20) are all symmetrically arrayed about the longitudinal axis (14). The shank (20) has a first diameter (D,) and the contact head (16) has at least one lateral dimension (D2) that is greater than the shank diameter (D). The base (18) has a diameter (D3) that is greater than the shank diameter (D) and has a surface (22) that is planar and substantially orthogonal to the longitudinal axis (14).

Claims

1. A method of making an electrical contact comprised of a hollow element having a connecting pin projecting therefrom, said method comprising the steps of:

forming said hollow element with a solid bottom and an apertured top separated by a frusto-conical wall;

forming said connecting pin, said connecting pin comprising;

a body having a longitudinal axis, a contact head formed at a proximal portion of said body, a base formed at a distal portion of said body and an intermediate shank portion therebetween, all symmetrically arrayed about said longitudinal axis, said shank having a first diameter, and said contact head having at least one lateral dimension greater than said shank diameter, said base having a diameter greater than said shank diameter and having a surface that is planar and substantially orthogonal to said longitudinal axis;

placing said connecting pin in a position to be welded with said base exposed;

placing said hollow element upon said base with said solid bottom in contact with said base; and

welding said bottom to said base.

2. The method of claim 1 wherein said welding occurs in a manner to substantially consume said base by fusing the material of said bottom and said base together.

3. The method of claim 2 wherein said welding is accomplished by a laser.