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. 23, 2015
Filed:
Jul. 27, 2012
Linghan Yue, Qiqihar, CN;
Shuang Yang, Qiqihar, CN;
Baichuan He, Qiqihar, CN;
Lei Yu, Qiqihar, CN;
Zhigang LI, Qiqihar, CN;
Tianjun Zhao, Qiqihar, CN;
Yong Fu, Qiqihar, CN;
Shengkun Wang, Qiqihar, CN;
Linghan Yue, Qiqihar, CN;
Shuang Yang, Qiqihar, CN;
Baichuan He, Qiqihar, CN;
Lei Yu, Qiqihar, CN;
Zhigang Li, Qiqihar, CN;
Tianjun Zhao, Qiqihar, CN;
Yong Fu, Qiqihar, CN;
Shengkun Wang, Qiqihar, CN;
QIQIHAR RAILWAY ROLLING STOCK CO., LTD., Qiqihar, CN;
Abstract
The present application provides a bottom door device and a hopper car, the bottom door device includes a first bottom door and a second bottom door, the first bottom door includes a first door end plate and a first bottom door plate which are fixedly connected, the second bottom door includes a second door end plate and a second bottom door plate which are fixedly connected, and a labyrinth seal is formed between the first bottom door plate and the second bottom door plate. By using a labyrinth seal to replace the overlapping sealing in the prior art, the bottom door device and the hopper car provided by the present application can still meet the sealing requirement on the premise that the two bottom door plates can be closed without complying with any specific order, thereby optimizing the structure of the bottom door device in the prior art.