A fan includes a frame and an impeller including a hub, a plurality of first blades, a first ring-shaped structure, and a plurality of second blades. The first blades are disposed around the hub. The hub and the first blades are surrounded by the first ring-shaped structure connected with the ends of the first blades, and a central area is structured therebetween. The second blades are connected with an outer rim of the first ring-shaped structure. The frame includes a base, an axle tube portion disposed on the base, and a receiving portion. The impeller is disposed on the axle tube portion. The receiving portion includes plural third blades disposed around the base corresponding to the central area. The first and third blades are matched to each other to be assembled for transforming a tangent velocity into a static pressure to increase the pressure generated by the central area.

A turbocharger system is disclosed, including a turbine and compressor and a rotary valve unit. The rotary valve unit comprises a fixed valve seat and a rotary valve member arranged coaxially with the valve seat. The valve member is disposed against the valve seat and is rotatable about the axis for selectively varying a degree of alignment between respective orifices in the valve seat and valve member. The valve unit includes a valve housing that defines a first flow passage and a second flow passage, and the valve member and valve seat are disposed in the second flow passage. A turbocharger system is also disclosed, including a turbine and compressor and the rotary valve unit. The rotary valve unit is coupled with the turbine such that exhaust gas that has passed through the turbine wheel is fed into the first flow passage of the rotary valve unit, and exhaust gas that has bypassed the turbine wheel is fed into the second flow passage of the rotary valve unit.

A turbocharger system is disclosed, including a turbine and compressor and a rotary valve unit. The rotary valve unit comprises a fixed valve seat and a rotary valve member arranged coaxially with the valve seat. The valve member is disposed against the valve seat and is rotatable about the axis for selectively varying a degree of alignment between respective orifices in the valve seat and valve member. The valve unit includes a valve housing that defines a first flow passage and a second flow passage, and the valve member and valve seat are disposed in the second flow passage. A turbocharger system is also disclosed, including a turbine and compressor and the rotary valve unit. The rotary valve unit is coupled with the turbine such that exhaust gas that has passed through the turbine wheel is fed into the first flow passage of the rotary valve unit, and exhaust gas that has bypassed the turbine wheel is fed into the second flow passage of the rotary valve unit.

In a ceiling fan in which root portions of blades are attached to a support portion to be rotary driven, a fall preventing member having a loop portion formed by a wire rod is provided, a through hole of which the loop portion of the fall preventing member penetrates is provided on the root portions of the blades, the support portion is provided with an engaging portion which is engageable with the loop portion of the fall preventing member, the loop portion of the fall preventing member is disposed to be engageable with the engaging portion of the support portion, the loop portion is engaged with the engaging portion of the support portion when an attachment part of the support portion and the blades is broken, and the blades are supported on the support portion through the loop portion of the fall preventing member in a state in which inner edges of the root portions of the blades are positioned on an outside of an outer edge of the support portion.

A ceiling fan is provided. The ceiling fan includes one or more fan blades. The ceiling fan further includes a motor. The motor is operatively coupled to the one or more fan blades. The motor is configured to drive rotation of the one or more fan blades. The ceiling fan further includes a light kit. The light kit includes a panel. The panel has an edge extending between a top surface of the panel and a bottom surface of the panel. The light kit further includes at least one light source positioned to illuminate the edge.

A ceiling fan includes a support, a motor portion, a blade portion, control section, illumination portion, and case. Illumination portion includes lower illumination cover, upper illumination cover, and LED substrate portion. Heat dissipation plates are provided on a side of upper illumination cover.

A system for cooling an engine is provided. The system uses a rim driven fan having an electric motor in a frame of the fan to move air through a radiator toward the outside of the vehicle. The electric motor may have the rotor and the stator axially or radially aligned. The plurality of fan blades extends radially inward of a support which is formed integral with or attached to the rotor. Rim driven fans are also provided.

The present invention is directed to a portable fan for the use in firefighting and other ventilation use-cases. The portable fan provides firefighters the ability to provide positive pressure ventilation in use for fighting fires which does not require power cables or combustible fuel powered motors, and provides increased portability, reduced risk, and reduced deployment time associated with managing and fighting a fire.

A water pump drain plug has a first end which is adapted for engagement to a water pump drain opening which communicates with the pressurized fluid within the water pump. The drain plug has an axial passage communicating therethrough capable of draining fluid from the water pump. The axial passage is plugged initially by a sealing member engaged therein which will release upon communication of fluid pressure against it at a predetermined release pressure.

A water pump drain plug has a first end which is adapted for engagement to a water pump drain opening which communicates with the pressurized fluid within the water pump. The drain plug has an axial passage communicating therethrough capable of draining fluid from the water pump. The axial passage is plugged initially by a sealing member engaged therein which will release upon communication of fluid pressure against it at a predetermined release pressure.