A cordless compressor has an air storage tank, a pump, a motor for driving the pump, and a controller circuit electrically connected to the motor. A pressure switch assembly is connected to the controller circuit. The pressure switch assembly has first and second pressure switches for sensing pressure within the air storage tank. The controller circuit controls de-activation of the motor depending upon status of the first and second pressure switches.

A cordless compressor has an air storage tank, a pump, a motor for driving the pump, and a controller circuit electrically connected to the motor. A pressure switch assembly is connected to the controller circuit. The pressure switch assembly has first and second pressure switches for sensing pressure within the air storage tank. The controller circuit controls de-activation of the motor depending upon status of the first and second pressure switches.

Systems and methods for a compressor system are provided for selectively operating the compressor system with reduced power consumption. An output demand level of the compressor system can be monitored over time to identify a demand profile. A pressure setpoint for the compressor system can be selectively adjusted based on the demand profile, including to selectively transition between an operational pressure setpoint for an active demand profile and a reduced pressure setpoint for an inactive demand profile.

A gas compressor includes a main body portion having a compression unit configured to compress gas, a drive unit configured to drive the compression unit, and a storage part configured to store the gas compressed by the compression unit, a leg portion configured to support the main body portion and configured to be supported by a support portion provided on an auxiliary storage unit, and a fastening unit configured to detachably fasten the auxiliary storage unit and the main body portion. The leg portion includes an connecting buffer portion having elasticity and configured to be brought into contact with the support portion, and the fastening unit fastens the auxiliary storage unit by applying a force in a direction in which the first connecting buffer portion is elastically deformed.

A gas compressor includes a main body portion including a compression unit configured to compress gas, an air blowing unit, and a drive unit configured to drive the compression unit and the air blowing unit, a cover portion covering at least a part of the main body portion and having an air vent through which air flows from the air blowing unit, and a handle portion having a gripping portion. The air vent faces a rotation axis direction of a rotation member of the air blowing unit which is rotated by being driven by the drive unit, and the handle portion includes a protective portion facing the air vent and being apart from the air vent.

A portable hydraulic power unit includes a frame, a fluid tank supported by the frame, and a manifold supported by the frame. The fluid tank is configured to store a supply of hydraulic fluid for powering a hydraulically-driven tool. A reciprocating pump is mounted on the exterior of the fluid tank and on the exterior of the manifold. The reciprocating pump is secured to the fluid tank and the manifold with fasteners extending through a cylinder body of the reciprocating pump.

A portable hydraulic power unit includes a frame, a fluid tank supported by the frame, and a manifold supported by the frame. The fluid tank is configured to store a supply of hydraulic fluid for powering a hydraulically-driven tool. A reciprocating pump is mounted on the exterior of the fluid tank and on the exterior of the manifold. The reciprocating pump is secured to the fluid tank and the manifold with fasteners extending through a cylinder body of the reciprocating pump.

A compressor of an embodiment includes: a piston that is housed in a case and moves back and forth in an axis direction inside the case; a main shaft that i) extends in the axis direction inside the case, and ii) guides the piston to move in the axis direction; and a drive that drives the piston to move along the axis direction. The piston includes: a main shaft bush through which the main shaft passes in the axis direction; and a compression board that has an outer diameter greater than an outer diameter of the main shaft bush, and that is fixed to an end portion of the main shaft bush on a side in the axis direction. Fluid inside the case is compressed, and then is ejected to an outside of the case. The drive is arranged between the compression board and an end portion of the case.

A compressor of an embodiment includes: a piston that is housed in a case and moves back and forth in an axis direction inside the case; a main shaft that i) extends in the axis direction inside the case, and ii) guides the piston to move in the axis direction; and a drive that drives the piston to move along the axis direction. The piston includes: a main shaft bush through which the main shaft passes in the axis direction; and a compression board that has an outer diameter greater than an outer diameter of the main shaft bush, and that is fixed to an end portion of the main shaft bush on a side in the axis direction. Fluid inside the case is compressed, and then is ejected to an outside of the case. The drive is arranged between the compression board and an end portion of the case.

An air compressor includes: a motor; a compression mechanism that is driven by the motor and that is configured to generate compressed air; a tank that is configured to store the generated compressed air; a load acquisition part that is configured to acquire a load applied to the compression mechanism; and a control part that is configured to control a rotation of the motor. The control part is configured to perform control for changing a TN characteristic of the motor in response to the load of the compression mechanism acquired by the load acquisition part.