发明授权
US5460773A Seal for blow down platen 失效
用于压下压板的密封

Seal for blow down platen
摘要:
A blow down hydroforming apparatus for sheet material incorporates an hydraulically inflatable seal disposed between a platen and a table in circumscribing relationship with a cavity formed in the platen to maintain the pressure of gas in the cavity during forming of the sheet material.
公开/授权文献
信息查询
0/0