Method and apparatus for performing in-situ vacuum-assisted metal to glass sealing

Patent · Wed Jan 01 00:00:00 EST 1986

OSTI ID:865981

Kramer, Daniel P ^[1]; Massey, Richard T ^[2]

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1. Dayton, OH
2. Hamilton, OH

A method and apparatus for assembling and fusing glass to metal in a glass-metal electrical component is disclosed. The component includes a metallic shell formed with upper and lower cylindrical recesses connected together by longitudinal passages, a pair of metal rings and plural metal pins assembled to define electrical feed-throughs. The component parts are assembled on a fixture having a sleeve-like projection and a central mounting projection establishing concentric nesting surfaces to which the metal rings are slip-fitted in concentric alignment with each other spaced from sidewalls of the lower recess. The pins are in electrical contact with the metal rings. A glass pre-form is seated within the upper recess. The assembled structure is heated to a temperature sufficient to melt the glass pre-form which flows under gravity through the passages into the lower recess to provide an insulative seal between the metal parts. The gravity flow of glass is assisted by applying vacuum to the lower recess, ensuring that all spaces between the metal parts are filled with sealing glass without formation of bubbles.

• Research Organization: MONSANTO RESEARCH CORP
• DOE Contract Number: AC04-76DP00053
• Assignee: United States of America as represented by United States (Washington, DC)
• Patent Number(s): US 4612029
• OSTI ID: 865981
• Country of Publication: United States
• Language: English

Related Subjects

method
apparatus
performing
in-situ
vacuum-assisted
metal
glass
sealing
assembling
fusing
glass-metal
electrical
component
disclosed
metallic
shell
formed
upper
cylindrical
recesses
connected
longitudinal
passages
pair
rings
plural
pins
assembled
define
feed-throughs
fixture
sleeve-like
projection
central
mounting
establishing
concentric
nesting
surfaces
slip-fitted
alignment
spaced
sidewalls
recess
contact
pre-form
seated
structure
heated
temperature
sufficient
melt
flows
gravity
provide
insulative
seal
flow
assisted
applying
vacuum
ensuring
spaces
filled
formation
bubbles
glass sealing
metal rings
electrical contact
temperature sufficient
sealing glass
metal electrical
gravity flow
shell formed
metallic shell
metal electric
electrical component
/65/