Koninklijke Philips Corporation N.v.

Hendrik Richard Jousma

Martinus Bernardus Stapelbroek

Tyler G Kloster

Scott E Hall

Michiel Allan Aurelius Schallig

Patrick A Headstrom

Wolter F Benning

Declan Patrick Kelly

Johannes Tseard Van Der Kooi

Fokke Roelof Voorhorst

Koray Karakaya

Eva Mondt

Johannes Hotze Bernhard De Vries

Bastian Cornelis Kleine-Doepke

Gerrit Jan De Jong

Jean-Paul Jacobs

Michiel A Schallig

Jean Bart Bleeker

Einte Holwerda

Maiza Georgien Salomons

Willem Sjoerd Dijkstra

Cornelis Reinder Ronda

An air purifier filter system comprises an air purifier filter unit and a machine readable identifier which provides information concerning the filter unit type and performance information specific to a target pollutant to be filtered by said air purifier filter unit from a plurality of different pollutants that can be filtered by that filter unit type. This information can be used to provide an end of life prediction for the filter unit or provide advice that the filter should be changed for other reasons. This enables the user to be given advance warning, and to be given instructions when it is time to change the filter unit. The instructions to change the filter unit may be more accurate than a simple timer as they can take account of the type of filter unit and the performance information. In some examples the use history of the filter unit may also be used to predict the time when it should be changed.

Air purifier filter system, an air purifier and a method for controlling an air purifier

A nodal-mounted spring arrangement for an electronic toothbrush includes a V-shaped spring member secured at both ends so that it can operate in out-of-phase torsion mode along the axial dimension thereof. In one embodiment, the V-shaped spring member includes two extended end regions, which extend below a longitudinal edge of the middle portion of the V-spring. The free ends of the extended portions are joined by a flat cross-piece. This 'closed end' region is present at both ends of the V-spring.

Nodal spring assembly for an electronic toothbrush

A V-spring member () for use in a driving system for a personal care appliance has regions () at the ends of the spring which are large enough to support a contact with an end clamping assembly, the spring member including a cross-piece () extending between the longitudinal edges of the spring at the end regions, such that the ends of the spring member define a closed line. End clamping assemblies () provided for such a V-spring member include a body portion () having a lower support portion () on which the V-spring is supported and a mating clamping member () positioned in registry with the support portion on top of the V-spring. The support portion and the clamping member include peripheral edges () which have a curved cross-sectional configuration, and which are in registry, making contact with the spring member in the end regions in such a manner as to reduce stress concentrations in the end regions of the spring, thereby reducing fretting fatigue and fretting damage in the spring.

V-spring configuration and end attachment assemblies therefor for use in a personal care appliance

A nodally mounted spring arrangement for a drive train which is used in an electronic toothbrush which includes a housing. A V shaped spring member () is secured at both ends thereof, wherein the spring member has a node point () along a ridge line, approximately halfway along the length of the spring member. A mounting plate () member is fixedly connected to the node point of the spring member and also fixedly connected to the housing of the toothbrush.

The dental cleaning appliance includes an appliance body () which has a bristle field housing () and fluid within the housing. A flexible membrane () is positioned within the housing, or in a fluid-tight relationship () within an opening () in the housing. A fluid pressure system involving either a dual piston system () or a pump and valve system () provides pressure on the fluid, wherein the pistons move alternately, or the valves open and close alternately, in such a manner to produce alternating pressure above and beneath the membrane, moving the membrane and the bristle field toward and away from the teeth.

Pressurized valve system for driving bristle tufts

One embodiment of an actuator system for a power dental cleaning appliance to produce a tapping motion of bristle tufts in a dental cleaning appliance includes a plurality of piston elements () mounted in a brushhead for movement away from and then toward the brushhead (). Bristle tufts () are positioned on the piston elements and move sequentially against and away from the teeth to produce a cleaning action. A low frequency fluid pressure action () in the range of 1-6 Hz maintains conformity of the bristle tufts in a low frequency sequence against the teeth, while a higher frequency fluid pressure action () in the range of 100-300 Hz moves the bristle tufts at that frequency to produce a tapping bristle action on the teeth to produce cleaning. In another embodiment, an actuation system includes an elongated actuator member () made of elastic material which expands and contracts about its longitudinal axis at a selected frequency by fluid pressure. A plurality of actuator sections () are fixedly mounted on the actuator element. The actuator sections are configured such that as the actuator member expands, an upper bridge portion () of the actuator section moves upwardly. The bristle tufts () mounted thereon produce a cleaning action on the teeth.

Power dental cleaning appliance with actuator system for producing a short bristle stroke

A nodal-mounted spring arrangement for an electronic toothbrush includes a V-shaped spring member secured at both ends so that it can operate in out-of-phase torsion mode along the axial dimension thereof. A mounting plate is connected between a node point along the V-shaped spring member and the housing of the toothbrush. In one embodiment, the V-shaped spring member includes opposing slots on opposite sides of the node point, the slots extending in an axial direction, creating an integrated torsion bar node spring, while reducing stress in the vicinity of the nodal point. In another embodiment, a nodal assembly comprises a diamond shaped or round insert having an upper surface configured generally to fit flush with the lower surface of the V-shaped spring member, a V-block shaped or flat shim member which is configured to mate the upper surface of the V-shaped spring member and the node spring, and an attachment member, such as a screw and nut combination, which tightly connects the mounting plate, the shim, the V-shaped spring member and the insert.

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Groningen, Netherlands

Hendrik Richard Jousma