发明授权
- 专利标题: Method of and apparatus for manufacturing plowshares
- 专利标题(中): 犁制造方法及设备
-
申请号: US120621申请日: 1980-02-11
-
公开(公告)号: US4345358A公开(公告)日: 1982-08-24
- 发明人: Dmetrios Petkidis
- 申请人: Dmetrios Petkidis
- 专利权人: Dmetrios Petkidis
- 当前专利权人: Dmetrios Petkidis
- 主分类号: B21H7/06
- IPC分类号: B21H7/06
摘要:
An improved method of and apparatus for manufacturing plowshares that enables the plowshare bending and shaping operations to be performed with precision in a succession of reciprocal movements while minimizing the need for preforming or treatment of the material from which the plowshare is made prior to placement in the plowshare machine, which method and apparatus is further characterized by a capability of working sheet material of different thicknesses, and which utilizes hydraulic power cylinders.
公开/授权文献
- US5950841A Screen assembly for a vibratory separator 公开/授权日:1999-09-14
信息查询