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US 4,787,448 AGranted
Rod guide
OwnerDonald E. Sableinventor
Life of this patent
Estimating the term…
Abstract
A rod guide assembly for rods of a sucker rod string having a pair of longitudinally spaced stops rigidly secured to the sucker rod and a plurality of independently movable guide body sections mounted on the rod between these stops for limited longitudinal movement between these stops.
Claims6
A rod guide assembly for a sucker rod longitudinally reciprocably movable in a well flow conductor comprising:
- a pair of longitudinally spaced upper and lower stops rigidly secured to a sucker rod;
- and a guide body movably mounted on said rod between said stops, said stops being spaced from each other a distance slightly greater than the length of said guide body, said upper stop engaging said guide body to move said guide body downwardly with said rod after an initial short downward movement of said rod after initiation of each downward movement of the rod and said lower stop engaging said guide body to move said second guide body upwardly with said rod after initial short upward movement of said rod after initiation of each upward movement of the rod during the longitudinal reciprocatory movement of said rod in a well flow conductor.
Dependencies are inferred from the claim text.