Electric heating – Metal heating – By arc
Patent
1983-01-24
1984-10-09
Albritton, C. L.
Electric heating
Metal heating
By arc
219121LU, 219121LQ, B23K 2700
Patent
active
044763743
ABSTRACT:
A rotary indexing device for indexing a member, such as a shaft, into operative working positions in which the shaft carries a plurality of indexing arms for selecting different working positions. Final positioning means for each indexing arm comprising a solenoid actuated, pneumatic operated pin for engaging the indexing arm and effects final adjustment of the indexing arm which is brought to approximately its proper position by a servo-motor. Means are also provided to provide positive confirmation that each step of the indexing operation has been properly completed to insure that the shaft has been rotated to and is in its proper position.
REFERENCES:
patent: 3131456 (1964-05-01), Bryant
patent: 3336823 (1967-08-01), Bonzi
patent: 4050355 (1977-09-01), Niskanen
Albritton C. L.
Avco Everett Research Laboratory, Inc.
Frederick M. E.
Smith David L.
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