F - Mech Eng,Light,Heat,Weapons – 04 – B
Patent
F - Mech Eng,Light,Heat,Weapons
04
B
103/142, 342/24
F04B 49/06 (2006.01) E21B 43/12 (2006.01) F04B 47/02 (2006.01)
Patent
CA 1193345
ABSTRACT OF THE DISCLOSURE The flow of hydraulic fluid to the pump of a pump jack and consequently the stroke of the polished rod is con- trolled by a pair of magnetic proximity limit switches mounted on the frame of the pump jack, and a magnet mounted on the polished rod. Closing of one switch by the magnet actuates a relay, which connects a battery to a solenoid for opening a valve through which hydraulic fluid is fed to one side of a double acting control cylinder. The control cylinder operates a pump, which feeds hydraulic fluid to one of a pair of oper- ating cylinders which move the walking beam, horsehead and polished rod. Closing of the other switch reverses the flow of hydraulic fluid to the control cylinder which causes the pump to feed hydraulic fluid to the other operating cylinder while taking oil from the first operating cylinder.
412302
Creamer Reginald D.
Dunsmuir George H.
LandOfFree
Pump jack control apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Pump jack control apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Pump jack control apparatus will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1273023