Machine element or mechanism – Elements – Pitmans and connecting rods
Patent
1989-09-11
1991-10-22
Braun, Leslie A.
Machine element or mechanism
Elements
Pitmans and connecting rods
248 741, E21B 1200
Patent
active
050584545
ABSTRACT:
The present invention is directed to a light weight spacer for changing the stroke of the polished rod of a sub-surface oil well pump. The spacer is made from a light weight alloy such as an aluminum alloy and is configured as a U-shaped body with a plurality of spines or ribs which have tips defining a diameter which will surround the polished rod. The spacer has an opening in one of the spines so that an extendable wand or spacer handling tool may be used to carry the spacer from the ground to be inserted or positioned between the bridal block and the upper polished rod clamp or to remove the spacer. A detent pin is used to enable the person on the ground to know that the spacer is in position and the spacer handling tool is used to close the pin or open the pin.
A jack may be included within the system of the present invention to raise the polished rod for insertion or the removal of one or more spacers.
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Anchell Scott
Braun Leslie A.
Kirk, Jr. John R.
Oathout Mark A.
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