U.S. Philips Corporation

Erich Krammer

Martin Sonnek

Francis J Span

Johann T Rogatschnig

Arno Wolfger

Hermann Jordan

Hendrik P Hazeu

Thomas Klinger

Petronella H Den Ouden

Maximilian Pachel

In a dental cleaning device (1) including a grip member (2) and at least one elongate extension member (5) which projects from the grip member (2) in the direction of a longitudinal axis (4), the free end portion (13) of the extension member carrying a brush holder (14), from which bristles (10) project in the direction of the pivotal axis (15) and which is drivable so as to pivot to and fro along a circularly arcuate path about a pivotal axis (15) oriented transversely to the longitudinal axis (4), and an interdental brush holder (16), from which interdental bristles (12) extend also in the direction of dte pivotal axis (15) and which is coupled to a drive member (69) which is drivable so as to pivot to and fro about a further pivotal axis (17), the further pivotal axis (17) also extends transversely to the longitudal axis (4) of the extension member (5), and the free ends of the bristles (10) and the interdental bristles (12) perform a movement whose main component is oriented parallel to a plane which extends perpendicularly to the pivotal axis (15) of the brush holder (14), the movement of the drive member along the circular arc-shaped path causing the interdental brush holder and the free ends of the interdental bristles to perform a reciprocatory movement substantially parallel to a longitudinal direction of interdental spaces between teeth in a user's mouth.

Dental cleaning device and attachment for such a device

An electric toothbrush comprising a toothbrush device (100) and a charge device (200) is operative to provide an accurate determination and an adequate indication of the duty performance of toothbrushing. The toothbrush device (100) comprises a supply unit (110), a control unit (120) and a driving portion (130). The control unit (120) is provided with a time-measuring portion (121) for measuring the duty time during toothbrushing, a pressure-measuring portion (122) for measuring the duty pressure during toothbrushing, a position-determining portion (124) for determining the duty position during toothbrushing and a computing portion (123) to compute a duty performance. An accurate determination of the duty performance is achieved in computing portion (123) which computes the duty performance in response of the duty time, the duty pressure and the duty position. 'duty' time, pressure and position being the time, pressure and position during operation of the toothbrush during toothbrushing. The duty performance and optionally the duty time, duty pressure and duty position are indicated by indication portion (2 10) located either on the toothbrush device (100) or on the charge device (200). In case of a detachable toothbrush device (100), the control unit (120) in the toothbrush device (100) and the indication portion (210) in the charge device (200) may communicate via a wireless communication link.

Electric toothbrush

A depilation apparatus including a number of pinching discs (35) which are coupled to a drive shaft (7) in positions which are mutually rotated through 120.degree. about the drive shaft (7) is provided. Each pair of adjoining pinching discs (35) is pivotable under the influence of a compression member (83) into a pinching position in which two cooperating pinching surfaces (67, 63) exert a pinching force on one another. The pivot axis (113) of each pair of pinching discs (35) is determined by a stud part (55b) of a bipartite stud (55) of one of the two pinching discs (35) and by the mutually facing steps (41) of the two pinching discs (35). The cooperating pinching surfaces (67, 63) are supported on either side in the pinching position by the stud parts (55b) and (55a), respectively, of the bipartite studs (55) of the adjoining pinching discs (35), so that a substantially straight force transmission path is created in the pinching position. Each pair of cooperating pinching discs is provided with a delaying stud (59) by which the pinching position is temporarily delayed after tilting of the pinching discs (35) about the pivot axis (113). Furthermore, each pair of cooperating pinching surfaces (67, 63) is provided with two nose-shaped combs (73, 71) which are bent into a hair-trapping funnel.

Disc-type depilation apparatus with force transmission studs

Growing community of inventors

Klagenfurt, Austria

Erich Krammer