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:
Jul. 19, 1988
Filed:
Oct. 17, 1985
Yunosuke Maki, Chiba, JP;
Youichi Watanabe, Chiba, JP;
Yasuhiko Sakaguchi, Chiba, JP;
Kazuaki Tanaka, Chiba, JP;
Yuichi Kobayashi, Tokyo, JP;
Hideo Ooishi, Tokyo, JP;
Minoru Kobayashi, Tokyo, JP;
Kawasaki Steel Corp., Tokyo, JP;
Denka Consultant & Engineering Co., Ltd., Tokyo, JP;
Abstract
The invention provides an efficient method for controlling the flow rate of a particulate material through a pneumatic transportation pipe at a preset value with a high accuracy and rapid response to an external disturbance added to the system by controlling the flow rate of the booster gas. Different from conventional methods in which the flow rate of the booster gas is controlled with the feedforward factor of the variation in the actual flow rate of the particulate material, the inventive method utilizes the variation in the pressure in the receiving unit as the feedback to control the flow rate of the booster gas so that the above mentioned advantages are obtained in the accuracy of control and rapidness of the response to an external disturbance.