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:
Nov. 05, 2019
Filed:
Jan. 16, 2017
Amsted Rail Company, Inc., Chicago, IL (US);
Zhongxian Du, Xinyang, CN;
Hongwei Ma, Xinyang, CN;
James Harold Strickland, Chicago, IL (US);
Sijin Zhang, Xinyang, CN;
Chengqun Yan, Xinyang, CN;
Jianfei Sun, Harbin, CN;
Fuyang Cao, Harbin, CN;
Hongjun Chen, Harbin, CN;
Amsted Rail Company, Inc., Chicago, IL (US);
Abstract
A pressure control system and means for pressure pouring of cast steel wheels, including a control system and a main gas circuit. The control system includes an upper computer, a PLC unit, a sensor, an operation box and an electronic valve. The upper computer is connected via a signal line with the PLC unit which is connected with each of the sensor, the operation box and the electronic valve. The sensor includes an inside-tank pressure sensor and an inside-mold liquid level detecting sensor. The electronic valve includes a quick breaking valve and a servo valve. The main gas circuit includes a gas pressure bag, a ball valve, a pressure reducing valve, a solenoid valve, and a pressure tank. The gas pressure bag, the ball valve, the pressure reducing valve, the solenoid valve and the pressure tank are connected with one another via gas tubes.