Title:
Molding machine ram and valve construction
United States Patent 2878648


Inventors:
Norman, Richard M.
Powell, Russell W.
Application Number:
US68012457A
Publication Date:
03/24/1959
Filing Date:
08/26/1957
Assignee:
NAT AUTOMATIC TOOL COMPANY INC
Primary Class:
Other Classes:
60/426, 91/29, 91/403, 91/441, 91/519, 137/625.25
International Classes:
B29C45/67; B30B15/16
View Patent Images:
US Patent References:
2343177Hydraulic press1944-02-29
2190755Hydraulic press1940-02-20
2152870Prefill valve for hydraulic presses1939-04-04
2152837Prefill valve for hydraulic presses1939-04-04