Abstract: A dental cleaning appliance includes a fluid reservoir for storing working fluid, a nozzle for delivering working fluid to the teeth of a user, a light source for illuminating the fluid reservoir and a control circuit for activating the light source to generate an alert which is conveyed to the user through the illumination of the fluid reservoir.

Abstract: A dental cleaning appliance includes a fluid reservoir for storing working fluid, a nozzle for delivering working fluid to the teeth of a user, a light source for illuminating the fluid reservoir and a control circuit for activating the light source to generate an alert which is conveyed to the user through the illumination of the fluid reservoir.

Abstract: A hand held appliance comprising an outer wall, a user operable button, a switch mechanism, and a switch assembly wherein the switch assembly is housed within the outer wall and comprises a frame, an actuator and a flexible membrane which connects the actuator to the frame and wherein the actuator cooperates with both the switch mechanism and the user operable button. The outer wall may comprise an aperture and the user operable button engages with the actuator through the aperture. The user operable button may be spaced from the flexible membrane by the actuator. The actuator may comprise a recess which engages with a corresponding protrusion that extends from the user operable button. The actuator may comprise a second recess which engages with an activation knob of the switch mechanism. The second recess may be spaced from the recess. The flexible membrane may extend around the perimeter of the actuator.

Abstract: A dental cleaning appliance includes a handle; an electronic display, and a control circuit for activating the display. The handle includes a body and a transparent panel connected to the body. The panel defines a trough-shaped recess beneath which the display is located.

Abstract: A dental cleaning appliance includes a handle, a display, and a control circuit for activating the display. The handle includes a body which is gripped by a user during use of the appliance, a transparent panel beneath which the display is located, and a layer of reflective material disposed on an external surface of the panel and through which, during use, the activated display is visible to the user.

Abstract: A hand held appliance comprising a fluid flow path extending from a fluid inlet into the appliance to a fluid outlet from the appliance, the fluid flow path being at least partially defined by a wall, a switch mechanism housed by the wall having a cooperating externally accessible actuating button and a switch cover extending within the wall and containing the switch mechanism. The switch cover may maintain a spatial location of the switch mechanism relative to the actuating button. The switch cover may encase the switch mechanism. The switch cover may isolate the switch mechanism from the fluid flow path. The switch cover may maintain a spatial location of the switch mechanism relative to the wall. The switch cover may be curved towards an upstream end to reduce disturbance to the flow of fluid within the fluid flow path.

Abstract: A dental cleaning appliance includes a handle; an electronic display, and a control circuit for activating the display. The handle includes a body and a transparent panel connected to the body. The panel defines a trough-shaped recess beneath which the display is located.

Abstract: A dental cleaning appliance includes a handle, a display, and a control circuit for activating the display. The handle includes a body which is gripped by a user during use of the appliance, a transparent panel beneath which the display is located, and a layer of reflective material disposed on an external surface of the panel and through which, during use, the activated display is visible to the user.

Abstract: A dental cleaning appliance includes a fluid reservoir for storing working fluid, a nozzle for delivering working fluid to the teeth of a user, a light source for illuminating the fluid reservoir and a control circuit for activating the light source to generate an alert which is conveyed to the user through the illumination of the fluid reservoir.

Abstract: A hand held appliance comprising a fluid flow path extending from a fluid inlet into the appliance to a fluid outlet from the appliance, the fluid flow path being at least partially defined by a wall, a switch mechanism housed by the wall having a cooperating externally accessible actuating button and a switch cover extending within the wall and containing the switch mechanism. The switch cover may maintain a spatial location of the switch mechanism relative to the actuating button. The switch cover may encase the switch mechanism. The switch cover may isolate the switch mechanism from the fluid flow path. The switch cover may maintain a spatial location of the switch mechanism relative to the wall. The switch cover may be curved towards an upstream end to reduce disturbance to the flow of fluid within the fluid flow path.

Abstract: A hand held appliance comprising an outer wall, a user operable button, a switch mechanism, and a switch assembly wherein the switch assembly is housed within the outer wall and comprises a frame, an actuator and a flexible membrane which connects the actuator to the frame and wherein the actuator cooperates with both the switch mechanism and the user operable button. The outer wall may comprise an aperture and the user operable button engages with the actuator through the aperture. The user operable button may be spaced from the flexible membrane by the actuator. The actuator may comprise a recess which engages with a corresponding protrusion that extends from the user operable button. The actuator may comprise a second recess which engages with an activation knob of the switch mechanism. The second recess may be spaced from the recess. The flexible membrane may extend around the perimeter of the actuator.