Heating – Work chamber having heating means – Having means by which work is progressed or moved mechanically
Patent
1985-02-28
1986-04-15
Camby, John J.
Heating
Work chamber having heating means
Having means by which work is progressed or moved mechanically
34164, F27B 914, F26B 900
Patent
active
045824843
ABSTRACT:
A spiral track oven has a heated spiral track on which semiconductor chip bases move. A jarring motion about the central axis of the track supplies inertia to the bases, moving them down the track. A blanket-like laminated heater on the inside of the track supplies heat to the bases. Excess heat is vented by positive airflow out a vent. A perforated screen-like shroud wrapped around the outside of the track keeps the bases from falling off the track while allowing excess heat to escape. A pneumatic or hydraulic drive shaft extends through a table to the base of the oven where it is mounted. The drive and driveshaft turn the oven back and forth about a central shaft gently in one direction and in a jarring motion in the other, thereby supplying inertia to the bases.
REFERENCES:
patent: 3343812 (1967-09-01), Moulton
patent: 3868213 (1975-02-01), Shulika et al.
patent: 4191881 (1980-03-01), Ahlgren et al.
patent: 4237622 (1980-09-01), Francis
patent: 4416624 (1983-11-01), Bloom
Camby John J.
Schneck Thomas
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