公开(公告)号：US3431764A

公开(公告)日：1969-03-11

申请号：US3431764D

申请日：1967-03-10

申请人： NORTH AMERICAN ROCKWELL

发明人： KENNEDY CLIFFORD F ,  SHELTON THOMAS M

IPC分类号： B21C37/18 ,  B21D3/00 ,  B21B19/02 ,  B21D3/04

CPC分类号： B21C37/18

公开(公告)号：US3632197A

公开(公告)日：1972-01-04

申请号：US3632197D

申请日：1969-08-11

申请人： NORTH AMERICAN ROCKWELL

发明人： SHELTON THOMAS M

IPC分类号： B43L13/18 ,  G03B21/00 ,  G03B21/16

CPC分类号： B43L13/18 ,  G03B21/00

摘要： A microfilm projector is mounted over a draftsman''s worktable by a fixed overhead support and adapted to receive microfilmed data such as technical reports. The projected and enlarged image of each separate page of data is cast onto the worktable surface at a location convenient for viewing, comparing, and/or copying by the draftsman.

摘要翻译： 微缩胶片投影机由固定架空支架安装在草稿工作台上，适用于接收诸如技术报告之类的缩微胶片数据。 每个单独的数据页面的投影和放大的图像被投射到工作台表面上，便于由绘图员查看，比较和/或复制的位置。

公开(公告)号：US3572078A

公开(公告)日：1971-03-23

申请号：US3572078D

申请日：1967-01-29

申请人： NORTH AMERICAN ROCKWELL

发明人： KENNEDY CLIFFORD F ,  SHELTON THOMAS M ,  CHU HUGH N

IPC分类号： B21B21/00 ,  B21C3/06 ,  B21C3/08 ,  B21C37/18

CPC分类号： B21C3/06 ,  B21B21/00 ,  B21C3/08 ,  B21C37/18

摘要： A tube tapering arrangement including at least three rotatable and equiangularly spaced circular disc dies. The die circumferences are identically contoured with variable depth die peripheries that are aligned adjacent one another in a geometric pattern defining a die orifice. During tube tapering of elongated workpieces, the disc dies are rotated synchronously so that the workpiece is deformed to the desired taper configuration.