Title:
Pumping systems
United States Patent 3212406
Inventors:
Mcduffie, Thomas F.
Publication Date:
10/19/1965
Export Citation:
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Assignee:
YOUNGSTOWN SHEET AND TUBE CO
Primary Class:
91/165
Other Classes:
91/235, 91/306, 417/403, 417/904
International Classes:
F01L25/06; F04B9/125; F04B47/04; F01L25/00; F04B9/00; F04B47/00
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US Patent References:
3032065Pneumatic cylinder control
2990816Pressure fluid operated pumping mechanism
2612142Pump jack valve control mechanism
2560676Pneumatic-hydraulic system for well pumping or drilling units
2490323Fluid operated pumping mechanism
2466375Automatic shutoff valve for fluid pressure operated devices
2408075Oil well pump
2366777Hydraulic lifting mechanism
2232449Hydraulic pump
2045945Fluid motor
2019353Hydraulic pumping apparatus
1619474Pumping system
0856709N/A