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:
Feb. 09, 1982
Filed:
Jan. 29, 1980
Hans-Jurgen Kwasnik, Herne, DE;
Hans-Gunter Piduch, Bochum, DE;
Dr. C. Otto & Comp. GmbH, Bochum, DE;
Abstract
A coal-charging apparatus includes a charging car with charging bins to discharge coal through filling tubes into charging holes in the roof of an oven chamber. A feed-screw conveys coal from the bottom of a charging bin to a trough communicating with a fixed filling tube. A peripheral trough on the bottom of this tube is filled with sand or liquid and receives a peripheral seal lip on the inside of a movable sealing tube. Hooks on the outside and at the top of the movable sealing tube engage a ring that is suspended by bearings at both ends of a stirrup. The filling tube is raised and lowered by a linkage system that includes a lever supported by a platform and operated by a piston and cylinder assembly. A closure plate is operated by a linkage including a lever supported by a platform and engaged with a piston and cylinder assembly. The closure plate is a leading edge that engages below a wall just above the fixed charging tube.