Abstract: An example hydraulic tool includes: a fluid reservoir; a pump; an electric motor; a cylinder; a piston; a first trigger button; a second trigger button; and a controller configured to perform operations comprising: receiving a first signal when the first trigger button is triggered, responsively, causing the electric motor to rotate in a first rotational direction, thereby: (i) causing the pump to provide fluid to the cylinder, and (ii) causing the piston to move in a first linear direction, thereafter, receiving a second signal when the second trigger button is triggered, and responsively to the second signal, causing the electric motor to rotate in a second rotational direction opposite the first rotational direction, thereby: (i) opening a fluid path from the cylinder to the fluid reservoir, and (ii) causing the piston to move in a second linear direction opposite the first linear direction.

Abstract: A compressor having a housing and mutually engaged stationary and orbiting scrolls. A crankcase is disposed between a motor and the orbiting scroll. A shaft is operably connected with the orbiting scroll and extends through the crankcase and the motor. The end of the shaft extending from the motor is rotatably supported by a bearing mounted in a bearing support. A counterweight is rotationally coupled with the shaft proximate the bearing support. An oil sump is disposed within the housing and an oil shield is fixed to the bearing support. The oil shield has a cylindrical portion with an open end which encircles the counterweight and may include a plurality of flexible members having inwardly bent portions which engage a groove on the bearing support.