Abstract: An impeller including a hub body, a shroud surrounding the hub body, and a plurality of impeller blades extending from the hub body to the shroud, wherein the hub body, the shroud, and the plurality of impeller blades are a one-piece structure.

Abstract: An electric motor having a rotor core with a rotatable shaft extending therethrough, and a stator positioned radially outward of the rotor core is disclosed herein. The stator can include at least one pair of first and second coils circumferentially positioned on opposing sides of the rotor. Each pair of the first and second coils includes first and second elements electronically isolated from one another. A first frequency converter is electrically connected to a first conductive wire and a second frequency converter is electrically connected to a second conductive wire. The first conductive wire is wound about the first element of the first coil and the first element of the second coil in series and the second conductive wire is wound about the second element of the first coil and the second element of the second coil in series.

Abstract: An end cap is provided for use in a filter element. The end cap includes a first side providing a first head connection which corresponds to a connection of a first filter head and a first media connection which corresponds to a connection of a filter media. The end cap further includes a second side providing a second head connection which corresponds to a connection of a second filter head, the second connection is configured differently from the first connection, and a second media connection which corresponds to a connection of a filter media. A support is provided for being received by a filter body, wherein the first side may be coupled to a first filter head and the second side may be attached to one end of a filter media or alternatively, the second side may be coupled to a second filter head and the first side may be attached to one end of a filter media.

Abstract: A diaphragm pump may comprise a housing defining a first pumping chamber, a second pumping chamber, and a hydraulic fluid chamber, a first flexible diaphragm separating the first pumping chamber from the hydraulic fluid chamber, a second flexible diaphragm separating the second pumping chamber from the hydraulic fluid chamber, a rod mechanically linking the first flexible diaphragm and the second flexible diaphragm such that an expansion of one of the first and second flexible diaphragms exerts a contraction force on the other of the first and second flexible diaphragms, and a piston disposed within the hydraulic fluid chamber and configured to reciprocate to cause a hydraulic fluid contained within the hydraulic fluid chamber to alternately exert an expansion force on the first and second flexible diaphragms.

Abstract: A method is disclosed that includes determining a current level of a plurality of lubricant parameters present in a portion of lubricant, comparing the current level of each of the plurality of lubricant parameters to a threshold value corresponding to each of the plurality of lubricant parameters, analyzing a priority of each of the lubricant parameters, and determining a health status of the lubricant in response to the comparing and the analyzing.

Abstract: Illustrative embodiments of impact tools are disclosed. In at least one illustrative embodiment, an impact tool comprises a motor including an output shaft configured to rotate about a first axis and a drive train configured to be driven by the output shaft of the motor and to drive rotation of an output drive about a second axis that is non-parallel to the first axis, wherein the drive train includes an impact mechanism comprising a hammer configured to rotate about a third axis to periodically deliver an impact load to an anvil, the third axis being parallel to and spaced apart from the second axis.

Abstract: A symmetrical cooling system for an electric rotor machine that includes a passageway that is positioned between portions of the stator, and which provides a pathway for a cooling medium. Stator ducts positioned within the stator, or portions thereof, are in fluid communication with the passageway. Cooling medium may flow through the stator ducts from the passageway to ends of the stator so that the cooling medium only travels along a portion of the overall axial length of the stator. The symmetrical cooling system also includes an air gap that is positioned between the stator and the rotor, and which receives cooling medium from the passageway at a midsection of the air gap. Cooling medium received at the midsection of the air gap may then flow towards either first or second ends of the stator.

Abstract: A tool apparatus includes a substructure at least partially enclosing an electric motor, the electric motor in selective electric communication with a battery, a tool head in mechanical connection with the electric motor, a tool housing defining an inner cavity, wherein the housing is structured to receive the substructure within the inner cavity, and a superstructure having an inner taper configured to receive an outer taper of the tool housing to retain the tool housing relative to the substructure.

Abstract: An apparatus is disclosed that includes a fluid inlet in fluid communication with a valve assembly, the valve assembly structured to selectively permit the flow of a motive fluid from the fluid inlet to a fluid driven motor, and wherein the valve assembly further includes a first plunger and a second plunger, one of the first plunger and the second plunger including a plurality of axially incorporated fluid channels, wherein the plunger including a plurality of axially incorporated fluid channels is structured to be selectively driven by an actuator such that as the plunger including a plurality of axially incorporated fluid channels is axially displaced away from a first position the number of axially incorporated fluid channels in fluid communication with the fluid inlet and the fluid driven motor increases.

Abstract: A compressor system is disclosed with a skeleton base structure configured to support a compressor. The skeleton base includes a first portion and a second portion configured to support the compressor system. The first portion includes a lower elongate support leg extending along a longitudinal direction, a support platform spaced above the lower support leg, and an open space formed between the lower support leg and the support platform. The second portion includes an extension beam projecting along the longitudinal direction from the first portion and a cross member support positioned transversely across the extension beam.

Abstract: Diaphragm pumps, and pre-charging systems for use with such pumps, are disclosed. The diaphragm pump includes a first diaphragm that separates a cavity into a motive fluid chamber and a pumped media chamber, a charge chamber having a controlled volume, wherein the controlled volume is adjustable to vary a controlled mass of compressed fluid capable of being stored in the charge chamber, and one or more valves configured to (i) fluidly couple the motive fluid chamber to an exhaust chamber during a first stroke period, (ii) fluidly couple the charge chamber to a compressed fluid inlet during at least a portion of the first stroke period, and (iii) fluidly couple the charge chamber to the motive fluid chamber during a second stroke period.

Abstract: Illustrative embodiments impact tools with torque-limited swinging weight impact mechanisms are disclosed. In at least one illustrative embodiment, a swinging weight impact mechanism may comprise a hammer configured to rotate about a first axis and pivot about a second axis different from the first axis, the hammer having a void formed therein, and an asymmetric anvil disposed partially within the void, the asymmetric anvil being configured to rotate about a third axis when impacted by the hammer. The asymmetric anvil may comprise a cylindrical body and a lug extending outward from the cylindrical body. The lug may include a first impact face extending along a first plane that intersects the third axis and a second impact face extending along a second plane that does not intersect the third axis, where the second plane intersects the first plane along a line that passes through the cylindrical body of the asymmetric anvil.

Abstract: A system is disclosed wherein a pressure pulse dampener is in fluid communication with a compressed fluid. The pulse dampener being operable for reducing pressure pulsations within the fluid. In some embodiments a check valve can be in fluid communication with the pulse dampener to prevent reverse flow of the compressed fluid.

Abstract: A filter head adaptor for a compressed air filter. The filter head adaptor capable of modifying a filter head to accommodate a variety of different style filter elements. The filter head adaptor including a main body connector, a filter element connector, and a second inlet channel in fluid communication between the main body connector and the filter element connector, the main body connector is adapted for coupling to the adaptor connector of the main body, whereby the main body connector is adapted for coupling to a filter head. The invention includes contemplates requiring a reduced inventory of filter heads and filter bodies for a plurality of filter elements, as the appropriate filter head adaptor may be selected which presents a particular filter element connector which matches that of the filter element intended to be used.

Abstract: According to at least one aspect of the present disclosure, an apparatus for cooling a coolant for a gas compressor includes a compressor to generate a flow of compressed gas, a dryer in fluid communication with the compressor, and a coolant circuit. The coolant circuit includes a accumulator to accumulate the coolant, a pump in fluid communication with the accumulator and the compressor to circulate the coolant through the coolant circuit, a first intercooler in fluid communication with the accumulator and the pump and structured to transfer heat from the coolant circuit to the compressed gas flow via the dryer, and a valve disposed between the accumulator and the first intercooler and structured to route at least a portion of the coolant through the first intercooler depending on a temperature of the coolant relative to prescribed low and high temperature limits.