FASTENERS AND SPACER RINGS THEREFOR
    3.
    发明公开
    FASTENERS AND SPACER RINGS THEREFOR 审中-公开
    固定件与距环THEREOF

    公开(公告)号:EP2079561A1

    公开(公告)日:2009-07-22

    申请号:EP07815355.8

    申请日:2007-10-11

    IPC分类号: B25B29/02

    摘要: An axially expanding spacer (10) has respective first and second spacer rings (11,12) with complementary helical ramped faces (16,17) and abutment faces (18,19). By relative rotation of the spacer rings (11,12), the height of the spacer (10), between annular faces (14,15) can be expanded or contracted. Compression springs (20) between the abutment faces (18,19) urge the spacer (10) to its 'expanded' configuration.