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2021
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Invention
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For cpa pumping unit with end return for positioning drive. There are several methods to propel m... |
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Invention
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Pumping unit with end return for positioning drive. There are several methods to propel moving fo... |
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2020
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Invention
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Moving crank shaft force point. Embodiments of the present invention relate to lifting and loweri... |
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Invention
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Moving effort force point on a pumping unit. Embodiments of the present invention relate to lifti... |
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2019
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Invention
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Head with contiguous counterweight dampers on structure. Cushioning dampers are beneficial for pr... |
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Invention
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Oscillating head with contiguous counterweight. A prime example of an application for a head with... |
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2018
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Invention
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Head with contiguous counterweight. A sucker rod reciprocating pump whose circular arc head is co... |
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2017
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Invention
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Energy harvesting and converting beam pumping unit. A walking beam pumping unit onboard above sur... |
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Invention
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Articulated reciprocating counterweight. A moving counterweight that reduces lifting and lowering... |
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Invention
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Intelligent force reducing double-acting counterweight. A movable counterweight that can reduce l... |
