Jonathan R Chan

US Patent:

55754171, Nov 19, 1996

Filed:

Jan 31, 1995

Appl. No.:

8/381043

Inventors:

Robert C. Allison - Rancho Palos Verdes CA
Jonathan W. Chan - La Puente CA
Garrett I. Kurogi - Lakewood CA
Brian C. Semmelroth - Huntington Beach CA
James C. Tonder - Manhattan Beach CA
Kenneth S. Varon - Palos Verdes Estates CA

Assignee:

Hughes Aircraft Company - Los Angeles CA

International Classification:

B23K 100

US Classification:

228119

Abstract:

Apparatus and processes for desoldering and soldering an insulator-encapsulated contact using a focused heat source and thermal choke in the form of a soldering iron tip and a contact moat. The desoldering and removal process includes the following steps. Securing the housing to minimize movement thereof. Heating a soldering iron to approximately 825. degree. C. Tinning the tip of the soldering iron with solder and flux. Engaging the contact from the rear using an extraction tool. Disposing flux on the solder joint. Contacting the soldering iron with the contact. Disposing the soldering iron in the moat while outward pressure is exerted with an extraction tool. After a predetermined delay, using the extraction tool to vacuum out the contact, while simultaneously removing the soldering iron and pushing out the contact, whereafter the contact is desoldered and seated in the extraction tool. Removing the contact from the extraction tool and removing the tool from the housing. The soldering or installation process comprises the following steps.