Abstract: A traffic radar system comprises a first radar transceiver assembly, a second radar transceiver assembly, a display, and a processing element. The first radar transceiver assembly transmits and receives radar beams and generates a first electronic signal corresponding to the received radar beam. The second radar transceiver assembly transmits and receives radar beams and generates a second electronic signal corresponding to the received radar beam. The display displays a plurality of speeds, each speed being a speed of a target vehicle. The processing element is configured to receive the first and second electronic signals, process the first electronic signal to determine speeds of target vehicles in the front zone, process the second electronic signal to determine speeds of target vehicles in the rear zone, and control the display to display the speeds of target vehicles in the front zone or target vehicles in the rear zone based on predetermined parameters.

Abstract: A hand held appliance, such as a hairdryer, includes a body, a fluid flow path extending through the body in an axial direction from a first fluid inlet through which a first fluid flow enters the appliance to a first fluid outlet for emitting the first fluid flow from the appliance, a primary fluid flow path extending from a second fluid inlet through which a primary fluid flow enters the appliance to a second fluid outlet, a section of the primary fluid flow path extending through the body in the axial direction and surrounding the fluid flow path, and a heater located within the section of the primary fluid flow path for heating fluid passing through the primary fluid flow path, and wherein the heater has a length extending in the axial direction.

Abstract: A hand held appliance including a fluid flow path extending between a fluid inlet and a fluid outlet and a ceramic heater within the fluid flow path wherein the fluid flow path is non-linear and the heater is non-linear. The appliance may include a housing wherein the housing houses the heater and encloses the fluid flow path, and wherein the housing is curved. The heater may be curved. The housing may include a straight section and a curved section and the heater is housed within the curved section. The heater may include at least one heating element comprising a flat ceramic plate and a conductive track. The heating element may be arcuate. The heating element may have a constant curvature.

Abstract: A heater including a ceramic heater element and ceramic heat sink whereby the ceramic heater element and the ceramic heat sink are both formed from a plurality of layers of tape cast ceramic material. The ceramic heater element may be generally planar and extends within a first plane. The ceramic heat sink may extend in a second plane which is orthogonal to the first plane. The ceramic heat sink may include a plurality of fins which may be discrete. The layers of the ceramic heater element may be orientated orthogonal to the layers of the ceramic heat sink. The ceramic heater element may comprise a conductive track which may be surface mounted to a distal side of the ceramic heater element than the ceramic heat sink or embedded within the ceramic heater element.

Abstract: A hair care appliance and a dock for the appliance, the appliance including a body having an outer wall extending between front and rear ends of the body, 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, and 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, wherein the primary fluid outlet is in the front end of the body, which comprises an end wall extending radially inwards of the outer wall, the end wall comprising magnetic material, wherein the dock comprises a base for attaching to a surface and magnetic material extending around the base, and wherein the appliance is configured to connect to the dock via magnetic coupling.

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: A traffic radar system comprises a first radar transceiver assembly, a second radar transceiver assembly, a display, and a processing element. The first radar transceiver assembly transmits and receives radar beams and generates a first electronic signal corresponding to the received radar beam. The second radar transceiver assembly transmits and receives radar beams and generates a second electronic signal corresponding to the received radar beam. The display displays a plurality of speeds, each speed being a speed of a target vehicle. The processing element is configured to receive the first and second electronic signals, process the first electronic signal to determine speeds of target vehicles in the front zone, process the second electronic signal to determine speeds of target vehicles in the rear zone, and control the display to display the speeds of target vehicles in the front zone or target vehicles in the rear zone based on predetermined parameters.

Abstract: A mobile test unit for verifying an accuracy of vehicle speeds determined by a traffic radar system comprises a test signal generator and a signal mixer. The test signal generator is configured to generate an electronic test signal having a first frequency. The signal mixer is configured to receive the test signal and a radar beam having a second frequency, wherein the radar beam is transmitted from a radar transceiver of a traffic radar system. The signal mixer is further configured to mix the electronic test signal and the radar beam and to generate a mixed signal having frequency components that include the first frequency and the second frequency, wherein the mixed signal is received by the radar transceiver.

Abstract: A traffic radar system comprises a first radar transceiver, a second radar transceiver, a speed determining element, and a processing element. The first radar transceiver transmits and receives radar beams and generates a first electronic signal corresponding to the received radar beam. The second radar transceiver transmits and receives radar beams and generates a second electronic signal corresponding to the received radar beam. The speed determining element determines and outputs a speed of the patrol vehicle. The processing element is configured to receive a plurality of digital data samples derived from the first or second electronic signals, receive the speed of the patrol vehicle, process the digital data samples to determine a relative speed of at least one target vehicle in the front zone or the rear zone, and convert the relative speed of the target vehicle to an absolute speed using the speed of the patrol vehicle.

Abstract: The present invention relates to a surface treating appliance comprising, a regenerative filter having at least one filter, the regenerative filter being removably mounted to the surface treating appliance, the at least one filter being movable from a filtration zone to a regeneration zone, the filtration zone being spaced from the regeneration zone, and a control mechanism for moving the at least one filter between the regeneration zone and the filtration zone in response to the regenerative filter being removed from or mounted onto the surface treating appliance.

Abstract: The present invention relates to an appliance comprising, a regenerative filter for filtering a fluid flow, having at least one filter, a filter regenerator for regenerating the regenerative filter, a turbine for driving the filter regenerator, the turbine being driven by the fluid flow passing through the appliance during its use.

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: A hair care appliance including a body, and a handle having a first end in fluid communication with the body and a second end comprising a primary fluid inlet into the appliance wherein the primary fluid inlet includes a first aperture extending at least partially around the handle and a second aperture extending through the second end of the handle. The handle can include an end wall that is substantially orthogonal to the handle at the second end with the second aperture extending through the end wall. The first aperture may be adjacent the second end. The handle may include a fan unit for drawing fluid into the primary fluid inlet upstream of the primary fluid inlet. The first aperture may include a plurality of apertures extending at least partially around and along the handle. The second aperture may include a plurality of apertures extending through the handle end.

Abstract: 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 hand held appliance, such as a hairdryer, includes a body, a fluid flow path extending through the body in an axial direction from a first fluid inlet through which a first fluid flow enters the appliance to a first fluid outlet for emitting the first fluid flow from the appliance, a primary fluid flow path extending from a second fluid inlet through which a primary fluid flow enters the appliance to a second fluid outlet, a section of the primary fluid flow path extending through the body in the axial direction and surrounding the fluid flow path, and a heater located within the section of the primary fluid flow path for heating fluid passing through the primary fluid flow path, and wherein the heater has a length extending in the axial direction.

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: 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 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: A hair care appliance including a body, and a handle having a first end in fluid communication with the body and a second end comprising a primary fluid inlet into the appliance wherein the primary fluid inlet includes a first aperture extending at least partially around the handle and a second aperture extending through the second end of the handle. The handle can include an end wall that is substantially orthogonal to the handle at the second end with the second aperture extending through the end wall. The first aperture may be adjacent the second end. The handle may include a fan unit for drawing fluid into the primary fluid inlet upstream of the primary fluid inlet. The first aperture may include a plurality of apertures extending at least partially around and along the handle. The second aperture may include a plurality of apertures extending through the handle end.