Conveyors: power-driven – Conveyor section – Screw
Reexamination Certificate
2006-07-28
2010-06-29
Crawford, Gene (Department: 3651)
Conveyors: power-driven
Conveyor section
Screw
C198S667000, C198S668000, C198S671000, C198S493000
Reexamination Certificate
active
07743912
ABSTRACT:
A conveyor feeding system for reliably and continuously supplying particulate matter as feedstock, such as rubber tire chips, to a reactor or distillation unit. The feeding system includes a pair of inclined spiral augers having their lower ends submerged in oil or other liquid to provide a liquid seal, thereby preventing undesirable back flow of distillation gases through the feeding system. The push auger acts to push lightweight feedstock downward, submerging it through the liquid seal. The material thereafter is taken up by the partially submerged feed auger, for withdrawal up out of the liquid seal for delivery to further processing, such as a pyrolytic reactor. Buoyant material, which otherwise might float upon the liquid of the seal reservoir, accordingly may be effectively processed through the system. An inlet valve, through which feedstock is introduced into the push auger, can be opened and closed in coordination with the rotation of the push auger, so that material is fed smoothly into the liquid seal reservoir. The inlet valve also may be of a type which prevents back-flow of gas from the push auger to material inlet valve.
REFERENCES:
patent: 1447297 (1923-03-01), Day
patent: 1595239 (1926-08-01), Minton
patent: 2029985 (1936-02-01), Clark et al.
patent: 3385695 (1968-05-01), Howie
patent: 3504177 (1970-03-01), Walker et al.
patent: 3729105 (1973-04-01), Huebler et al.
patent: 4247240 (1981-01-01), Schora, Jr. et al.
patent: 4287157 (1981-09-01), Koch
patent: 4326556 (1982-04-01), Deutsch et al.
patent: 4579562 (1986-04-01), Tarman et al.
patent: 5125771 (1992-06-01), Herman et al.
patent: 5207904 (1993-05-01), Abel
patent: 5714043 (1998-02-01), Finley et al.
patent: 5871619 (1999-02-01), Finley et al.
patent: 6722593 (2004-04-01), Dobozy
patent: 7275893 (2007-10-01), Rexius et al.
patent: 2001/0030107 (2001-10-01), Simpson
Baker Rod D.
Crawford Gene
Cumbess Yolanda
LandOfFree
Liquid seal bulk feeder for destructive distillation of... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Liquid seal bulk feeder for destructive distillation of..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Liquid seal bulk feeder for destructive distillation of... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4246434