Patents Assigned to ZHEJIANG WANLONG MACHINERY CO., LTD.
  • Bellows seal assembly and bellows valve equipped therewith
    Patent number: 8702057
    Abstract: A bellows seal assembly and bellows valve equipped therewith. The bellows seal assembly includes an internal bellows, an external bellows, a hollow upper bellows seat, a first hollow lower bellows seat, and a second hollow lower bellows seat. One end of the internal bellows is fixed to the upper bellows seat and the other end is fixed to the second lower bellows seat. One end of the external bellows is fixed to the upper bellows seat and the other end is fixed to the first lower bellows seat. The external bellows is sheathed around the internal bellows. The first lower bellows seat is sheathed around the second lower bellows seat. The bellows valve includes the bellows seal assembly.
    Type: Grant
    Filed: May 7, 2012
    Date of Patent: April 22, 2014
    Assignee: Zhejiang Wanlong Machinery Co., Ltd.
    Inventor: Xingyan Cheng
  • BELLOWS SEAL ASSEMBLY AND BELLOWS VALVE EQUIPPED THEREWITH
    Publication number: 20120217429
    Abstract: A bellows seal assembly and bellows valve equipped therewith. The bellows seal assembly includes an internal bellows, an external bellows, a hollow upper bellows seat, a first hollow lower bellows seat, and a second hollow lower bellows seat. One end of the internal bellows is fixed to the upper bellows seat and the other end is fixed to the second lower bellows seat. One end of the external bellows is fixed to the upper bellows seat and the other end is fixed to the first lower bellows seat. The external bellows is sheathed around the internal bellows. The first lower bellows seat is sheathed around the second lower bellows seat. The bellows valve includes the bellows seal assembly.
    Type: Application
    Filed: May 7, 2012
    Publication date: August 30, 2012
    Applicant: ZHEJIANG WANLONG MACHINERY CO., LTD.
    Inventor: Xingyan CHENG