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U.S. Department of Energy
Office of Scientific and Technical Information

Apparatus for extracting oil from shale

Patent ·
OSTI ID:5456278
A retort for driving off volatile matter from oil shale is described in which a perforated pipe extends into the shale within the retort and suction means is connected to the pipe for drawing volatilized matter into the pipe through the openings. A means is provided for varying the area of the openings comprising a pipe within the first pipe and having coinciding openings and means for displacing the inner pipe in relation to the outer pipe.
Assignee:
Rhoades Shale Oil Co.
Patent Number(s):
US 1668820
OSTI ID:
5456278
Country of Publication:
United States
Language:
English