Back to 1998's patent survey.
United States Patent 5,847,356
Santhanam Dec. 8, 1998
Laser welded inkjet printhead assembly utilizing a combination laser and fiber optic push connect system

Abstract

A method for the solderless laser welding of two materials by using a laser light beam attached to a fiber optic system which directs the light to a region where the laser beam can shine through one of the materials to create a seam weld. By using a fiber optic system the laser beam is converted into thermal energy and weld flaws due to underheating or destruction of the materials due to overheating do not occur. A seed-metal layer and weldable-metal patterns are formed on non-metallic materials-to-allow their laser welding by this method.

Inventors: Santhanam; Ram (San Diego, CA).
Assignee: Hewlett-Packard Company (Palo Alto, CA).
Appl. No.: 705,928
Filed: Aug. 30, 1996
Intl. Cl. : B23K 26/00
Current U.S. Cl.: 219/121.64
Field of Search: 219/121.63, 121.64, 121.82, 121.85; 156/272.8; 427/554, 555, 556, 596, 597; 29/890.1
References Cited | [Referenced By]
U.S. Patent Documents
H158Nov., 1986Frausto et al. 219/121.64
4,327,277Apr., 1982Daly 219/121.64
4,404,453Sept., 1983Gotman 219/121.64
4,424,435Jan., 1984Barnes, Jr. 219/121.64
4,845,335Jul., 1989Andrews 219/121.63
4,879,450Nov., 1989Valentin et al. 219/121.64
4,894,509Jan., 1990Chalco 219/121.64
4,961,768Oct., 1990Djeu 156/272.8 X
4,978,835Dec., 1990Luijtjes et al. 219/121.64
5,049,718Sept., 1991Spletter et al. 219/121.64
5,055,652Oct., 1991Jones 219/121.64
5,272,310Dec., 1993Daikuzono 219/121.64
5,278,584Jan., 1994Keefe
5,442,384Aug., 1995Schantz 347/20
5,450,113Sept., 1995Childers 347/87
5,467,115Nov., 1995Childers 347/47
5,481,082Jan., 1996Yamamoto 219/121.64
5,489,321Feb., 1996Tracy et al. 156/272.8 X
5,565,119Oct., 1996Behun 228/1.1

Foreign Patent Documents
42 00 492Apr., 1993DE
Other References

U.S. application No. 08/550,427, Pan et al., filed Oct. 30, 1995.

U.S. application No. 08/550,328, Pan et al., filed Oct. 30, 1995.

U.S. application No. 08/558,567, Akhavain et al., filed Oct. 31, 1995.


Primary Examiner: Mills; Gregory L.
Attorney, Agent or Firm: Stenstrom; Dennis G.
9 Claims, 36 Drawing Figures
Back to 1998's patent survey.