Metal working – Barrier layer or semiconductor device making – Barrier layer device making
Patent
1977-06-20
1978-07-04
Lazarus, Richard B.
Metal working
Barrier layer or semiconductor device making
Barrier layer device making
425125, 425DIG44, 264 61, 264 67, 264278, 264314, H01T 1300
Patent
active
040979776
ABSTRACT:
To permit simple manufacture and reliable attachment of the center electrode into a ceramic body, an elastic tubular press mold is located in a press body, the press mold being closed off by a movable plug having a needle-like extension with a gripping end formed thereon to receive the center electrode before the plug is inserted into the tubular mold. Ceramic material is then filled into the mold, the plug closing off one end thereof, the mold is closed with a second plug, and pressure in the order of from 250 to 400 bar applied to the outside of the elastic mold to compress the ceramic material and embed the center electrode tip therein. Upon release of pressure, the compressed ceramic, with the center electrode therein can be removed from the holding tip of the needle-like extension of the plug, for subsequent grinding to size, sintering, firing, and glazing, if desired.
REFERENCES:
patent: 1984724 (1934-12-01), Birr
patent: 2091973 (1937-09-01), Fessler et al.
patent: 2152738 (1939-04-01), Jeffery
patent: 3034191 (1962-05-01), Schaefer et al.
Lazarus Richard B.
Robert & Bosch GmbH
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