LEAD SEVERING CONTRIVANCE

Patent · 01 April 1958

OSTI ID:4318742

Widmaier, W

A means for breaking an electrical circuit within an electronic tube during the process of manufacture is described. Frequently such circuits must be employed for gettering or vapor coating purposes, however, since an external pair of corector pins having no use after manufacture, is undesirable, this invention permits the use of existing leads to form a temporary circuit during manufacture, and severing it thereafter. One portion of the temporary circuit, made from a springy material such as tungsten, is spot welded to a fusable member. To cut the circuit an external radiant heat source melts the fusable member, allowing the tensed tungsten spring to contract and break the circuit. This inexpensive arrangement is particularly useful when the tube has a great many external leads crowded into the tube base.

• Research Organization: Originating Research Org. not identified
• NSA Number: NSA-12-014440
• Assignee: U. S. Atomic Energy Commission
• Patent Number(s): US 2829293
• OSTI ID: 4318742
• Country of Publication: United States
• Language: English

Related Subjects

CIRCUITS
COATING
CONFIGURATION
DEFECTS
ELECTRON TUBES
FABRICATION
HEATING
LEAD
MELTING
PATENT
PATENTS
TUNGSTEN
VAPORS
WELDING