The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 30, 1977
Filed:
Aug. 25, 1975
Harold E Trumbull, Columbus, OH (US);
Dean F Poeth, Columbus, OH (US);
Battelle Memorial Institute, Columbus, OH (US);
Abstract
Methods of conveying solid particles via an elongate tube from a supplying region at one pressure to a receiving region at a substantially different pressure. Movable sealing zones, comprising mixtures of solid particles and liquid, contact the inner wall of the tube and are carried along with the particles when forced by a ram from the tube into the receiving region. While the particles and sealing zones are being conveyed into the tube, a gate or an auger at the receiving region may substantially seal it from the tube. Typically the sealing zones are formed as thin disks or annular layers of fine coal particles and oil, where discrete coal charges are fed into a gasifier unit.