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:
Jun. 02, 1987
Filed:
Jun. 17, 1985
Applicant:
Inventors:
Gerard Flament, Verneuil-en-Halatte, FR;
Jean P LeCalvez, Paris, FR;
Assignee:
Charbonnages de France, Paris, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B65G / ;
U.S. Cl.
CPC ...
406 14 ; 406 31 ; 406 79 ; 406146 ;
Abstract
A gravimetric metering apparatus with a constant throughput is enclosed inside a sealed chamber and connected through the wall of the chamber, by a first pipe, to a pneumatic conveyor line operating under a pressure of n bars and, by a second pipe, to an intermittentently operated external loading hopper. The chamber is filled with gas under a pressure of n bars which is equal to that inside the pneumatic conveyor line.