Title:
Ram type valve apparatus
United States Patent 3102709


Inventors:
Herbert, Allen
Application Number:
US83611359A
Publication Date:
09/03/1963
Filing Date:
08/26/1959
Assignee:
CAMERON IRON WORKS INC
Primary Class:
Other Classes:
137/614.11, 137/630.22, 251/175, 251/187, 251/210, 251/282, 251/332, 277/325
International Classes:
E21B33/06; F16K3/28
View Patent Images:
US Patent References:
2912000Check valves1959-11-10
2593793Ram-type tubing head1952-04-22
2218093Blowout preventer1940-10-15
1863252Outlet valve1932-06-14
Foreign References:
GB195692A1923-04-06