F - Mech Eng,Light,Heat,Weapons – 04 – B
Patent
F - Mech Eng,Light,Heat,Weapons
04
B
103/41
F04B 47/12 (2006.01)
Patent
CA 1117366
ABSTRACT OF THE DISCLOSURE A pump of the reciprocating plunger type for use in an oil well in which structure is provided for pulling downwardly on the pump plunger during its downward stroke rather than relying upon the pump rod or sucker rod to push the plunger downwardly thereby eliminating lateral deflection of the pump rod or the sucker rod and resultant wear and damage which frequently occurs especi- ally when pumping heavy crude oil or the like. One embodiment of this struc- ture involves a tension member connected with the walking beam and extending downwardly below the plunger, around a roller assembly or the like and then back upwardly for connection with the bottom of the plunger so that as the walking beam moves downwardly to move the pump plunger so that tension member will be tension for pulling the plunger downwardly without applying compressive force to the pump rod or sucker rod. Another embodiment of this structure pro- vides a weight attached to the bottom of the plunger with the weight being reciprocal in a closed chamber so that it is not in contact with the fluid being pumped. The pump barrel is provided with a desander between the plunger and the standing valve and is in the form of a rod projecting upwardly in the pump barrel for extending into the lower hollow end of the pump plunger for removing sand therefrom to prevent sand from filling or clogging the lower end of the plunger.
286224
Macrae & Co.
Sparks Virgil H.
LandOfFree
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