Method for use in connection with the making of protector caps for compressed gas cylinders
United States Patent 2728135

Inventors:
Rockwell Jr., Dean M.
Publication Date:
12/27/1955
View Patent Images:
Download PDF 2728135 pdf       PDF help
Export Citation:
Click for automatic bibliography generation
Assignee:
Rockwell Jr., Dean M.
Primary Class:
29/890.132
Other Classes:
72/400, 72/126, 73/304C, 72/358
International Classes:
B21D51/24; B21D51/16
US Patent References:
1812023Punching and upsetting machine
1877370Method of making loosening stretchers for cables, rods and the like
2005215Method of forming an annulus and apparatus therefor
2168641Die mechanism
2246096Method of closure manufacture
2268246Manufacture of flanged tubes
2344285Upsetting of metal tubes, rods, or the like
2349863Thread-rolling tool
2372011Method of making lead articles
2373901Boss forming process
2383584Method of flanging bimetallic plate