Powered Rotor Oil Pump for Compressor Refilling

The patent replaces the manual mechanical pumping system with a powered rotor pump system. The rotor pump uses rotational motion generated by a power source (such as a motor) to drive the pumping action, eliminating the need for manual up-and-down plunger movement. This substitution of manual mechanical operation with powered rotational mechanics directly addresses the contradiction by providing both high pumping speed and reduced manual effort.

The patent employs a rotor pump mechanism where the rotor rotates dynamically to create varying volume cavities that draw in and discharge oil. This dynamic rotational operation allows the pump to achieve high flow rates (exceeding 0.25 gallons per minute) while maintaining ease of operation through automatic cyclic action, resolving the contradiction between productivity and ease of operation.

The patent employs an asymmetric rotor design within the pump housing, where the rotor is offset from the center of the housing. This asymmetric positioning creates the necessary volume displacement for efficient pumping while enabling the vertical inlet/outlet configuration. The asymmetric geometry allows the rotor to generate effective pumping action in a compact arrangement, achieving high productivity without proportionally increasing device complexity.

The patent repositions the inlet and outlet ports from the conventional horizontal arrangement to a vertical arrangement, utilizing the vertical dimension for fluid flow. This dimensional change allows the pump to achieve better ergonomics and pumping efficiency by aligning with gravity-assisted flow paths, while the compact vertical arrangement keeps the overall device size manageable, thus resolving the contradiction between productivity and device complexity.