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. 13, 1989
Filed:
Oct. 28, 1987
Applicant:
Inventors:
James A Salter, Katy, TX (US);
Thomas R Schmidt, Houston, TX (US);
Thomas S DeWitz, Houston, TX (US);
Charles M Arbore, Houston, TX (US);
Frederick M Duysings, Houston, TX (US);
Johannes W Van Der Meer, Amsterdam, NL;
David Brown, Amsterdam, NL;
Henricus C Venselaar, Amsterdam, NL;
Assignee:
Shell Oil Company, Houston, TX (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B65G / ;
U.S. Cl.
CPC ...
406 14 ; 406 12 ; 406 23 ; 406 93 ;
Abstract
The present invention is directed to an apparatus and method for controlling mass flow rate of a particulate solids and gas mixture to a reactor. In particular, the fast response of a mass flow rate-indicating device is combined with the longer term accuracies in changes in the total mass from weigh cells to yield rapid and more accurate loss-in-weight measurements than conventional systems.