Abstract: A hand held appliance comprises a body having an outer wall, a duct extending at least partially along the body within the outer wall, an interior passage extending about the duct for receiving a primary fluid flow, a primary fluid outlet for emitting the primary fluid flow from the body, wherein the primary fluid outlet is defined by the duct and an inner wall of the body. The inner wall may extend from the outer wall towards the duct and may extend radially around the duct. The inner wall may extend from the outer wall towards the primary fluid outlet. At least one spacer may be provided between the inner wall and the duct. The at least one spacer may be a supporting rib. The duct may be formed from two parts, a first part fixed to the inner wall and a second part connected to the first part.

Abstract: An attachment for a handheld appliance, the attachment having a first end for connection to the appliance and a second end, a first wall extending from the first end towards the second end and defining a fluid flow path through the attachment, a second wall extending from the second end towards the first end about the first wall and defining a second fluid flow path extending between the first wall and the second wall. The first end of the appliance may be substantially circular. The fluid flow path may have a fluid inlet that may be annular at the first end. The fluid inlet may be defined by the first wall and an inner wall extending around and at least partially along the first wall. The inner wall may be substantially equidistant from the first wall around the fluid inlet. A hair care appliance comprises such as attachment.

Abstract: Disclosed is a hair care appliance comprising a handle, the handle comprising a wall and an outer wall wherein the wall defines a primary fluid flow path that extends from a primary fluid inlet into the appliance and the outer wall is an external surface of the appliance. The outer wall may extend substantially continuously around and along the wall. An insulating layer may be provided between the wall and the outer wall, the insulating layer is may be substantially continuous around and along the wall and may mitigate one or more of noise, vibration and heat produced by the appliance. The handle may include a fan unit for drawing fluid into the primary fluid inlet and along the primary fluid flow path.

Abstract: Disclosed is a hair care appliance comprising a body comprising an outer wall, and a handle comprising an outer wall and a wall disposed within the outer wall wherein, the outer wall of the body and the wall of the handle are formed as a single unit. The outer wall may extend about the wall and partially along the wall. The wall may comprise an access aperture and a hatch for closing the access aperture which the outer wall may extend over. The outer wall may extend about the wall for substantially the whole length of the wall. The handle may comprise a primary fluid inlet disposed at and/or near the distal end of the handle from the body which may comprise at least one aperture extending around and along the outer wall. Also disclosed is a hand held appliance.

Abstract: Disclosed is a hair care appliance comprising a body, a fluid flow path extending through the body from a fluid inlet to a fluid outlet and a PCB extending about the fluid flow path. The PCB may be annular. The PCB may be isolated from the fluid flow path. The PCB may comprise a first layer and a second layer. The first layer may extend substantially continuously about the fluid flow path and the second layer may extend partially about the fluid flow path. The second layer may be adjacent the first layer and may be downstream of the first layer. The body may comprise a duct and the fluid flow path extends through the duct. The PCB may extend about the duct. The body may comprise a primary fluid flow path extending about the duct which may be in fluid communication with the PCB.

Abstract: A traffic radar captures the patrol vehicle return signal by saving the patrol return when the radar system is placed in a standby state. If the radar is in standby for more than a predetermined period of time before reentering a transmitting mode, the system searches for a new patrol signal within a speed window around the saved patrol signal speed. If the radar is in standby for less than the predetermined period of time, the system initially searches for a new patrol signal over a range that excludes an interval around the saved patrol signal speed. If the new patrol signal is not found, then in a subsequent search the interval is included in the searched spectrum.