A coaxial hose for electrostatic oiling systems that includes a flexible external tube, and a flexible internal tube for the circulation of a second fluid inside thereof. The internal tube together with the external tube form an annular space for the circulation of a first fluid. The internal tube includes an internal layer made of PTFE that is intended to contain the second fluid, internal braiding that is intended to lend the internal tube pressure resistance and an external layer that is made of polyamide material which is intended to prevent the passage of the first fluid through the braiding.

A lubricating system includes a machine configured to operate in a first operating state and a second operating state; and a heat activated polymer material applied to at least a part of the machine and to remain solid during the first operating state and to soften upon being heated in the second operating state to lubricate the machine. The heat activated polymer material may soften due to increased friction incurred by the machine in the second operating state. A heating element may be operatively connected to any of the machine and the heat activated polymer material. The heat activated polymer material may soften due to being heated by the heating element in the second operating state. An injector may apply the heat activated polymer material to the machine. A channel may direct a flow of the heat activated polymer material as it softens in the second operating state.

A lubricating system includes a machine configured to operate in a first operating state and a second operating state; and a heat activated polymer material applied to at least a part of the machine and to remain solid during the first operating state and to soften upon being heated in the second operating state to lubricate the machine. The heat activated polymer material may soften due to increased friction incurred by the machine in the second operating state. A heating element may be operatively connected to any of the machine and the heat activated polymer material. The heat activated polymer material may soften due to being heated by the heating element in the second operating state. An injector may apply the heat activated polymer material to the machine. A channel may direct a flow of the heat activated polymer material as it softens in the second operating state.

An apparatus is provided for cooling a high heat-generating vehicle component having a coolant loop. The apparatus comprises an air compressor assembly including a heat-sinking portion that can be thermally coupled to the coolant loop to transfer heat energy away from the coolant loop to enhance cooling of the vehicle component.

A mixing valve arrangement for a hydraulic system is provided with a medium cavity, in which a mixing cylinder, a first and a second inlet chamber as well as an outlet are provided. A mixing piston is axially mounted and movable in the mixing cylinder, provided with a flow path with an inlet opening, a variable cross-section of said inlet opening culminating into the first and/or the second inlet chamber, according to the axial position of the mixing piston, and with an outlet opening culminating in the outlet of the mixing cylinder. A thrust rod is axially mounted and movable and connected to the mixing piston, to change the axial position thereof. A drive is connected as an actuator to the thrust rod, for the axial movement of the same. The drive is an electrical motor, which is completely arranged inside the medium cavity.

A mixing valve arrangement for a hydraulic system is provided with a medium cavity, in which a mixing cylinder, a first and a second inlet chamber as well as an outlet are provided. A mixing piston is axially mounted and movable in the mixing cylinder, provided with a flow path with an inlet opening, a variable cross-section of said inlet opening culminating into the first and/or the second inlet chamber, according to the axial position of the mixing piston, and with an outlet opening culminating in the outlet of the mixing cylinder. A thrust rod is axially mounted and movable and connected to the mixing piston, to change the axial position thereof. A drive is connected as an actuator to the thrust rod, for the axial movement of the same. The drive is an electrical motor, which is completely arranged inside the medium cavity.

A lubrication system for a frac pump includes a lubrication system housing, a lubricant tank held by the lubrication system housing, a heating device held by the lubrication system housing, a cooling device held by the lubrication system housing, and a filtration device held by the lubrication system housing. The lubrication system housing is configured to be at least one of mounted to a frac pump housing of the frac pump or held within the frac pump housing.

A system and method for applying lubricant to a surface, such as a heating surface of a fuser member. The system includes lubricant conduit for carrying pressurized lubricant toward a spraying assembly. A heating element surrounds the lubricant conduit and heats the pressurized lubricant before it arrives at the spraying assembly. The system also includes a pair of double O-ring sealing assemblies for sealingly coupling a lubricant tube to the system.

A system and method for applying lubricant to a surface, such as a heating surface of a fuser member. The system includes lubricant conduit for carrying pressurized lubricant toward a spraying assembly. A heating element surrounds the lubricant conduit and heats the pressurized lubricant before it arrives at the spraying assembly. The system also includes a pair of double O-ring sealing assemblies for sealingly coupling a lubricant tube to the system.

There is disclosed a tool for filtering a lubricant to meet a target ISO cleanliness code. The tool includes a skid-mounted integrated filtration system having a pump that circulates a flow of lubricant from an inlet port, through a heater, through a series of specifically sized filters, and past a digital particle counter. The filtration system also includes a user interface and a programmable logic controller (PLC) configured to track outputs from the pump, the oil heater, and the particle counter to monitor a cleanliness of the circulating lubricant. The filtration system also includes a filtration operations server in communication with the PLC and configured to implement a tracking and monitoring software application enabling control of the filtration system from the system itself or remotely through one or more remote user terminals such as a smartphone, a laptop or tablet computer, and the like. Other embodiments are disclosed.