U.S. Philips Corporation

Norbert Schneider

Ingo Muller

Romuald L Bukoschek

Piet C Van Rens

Herbert Piber

Johann Unteregger

Max Pachel

Wolfgang U Wiedemann

Erich Krammer

A toothbrush comprises two parts (2, 3) which are pivotable relative to one another, of which a first part (2) serves as a handle and of which a second part (3) carries a brush-head (5), a spring (7) being arranged between the parts and having one end (8) fixedly connected to one (2) of the parts and having another end (9) which engages with a wall portion (11) of the second part (3), the second part (3) being pivotable relative to the first part (2) against a pressure exerted by the spring (7) during use of the toothbrush, which spring snaps when a given pressure threshold (P.sub.d) is exceeded, after which the second part (3) is subjected only to a bending load in the absence of a pressure (Q) directed in the longitudinal direction of the spring (7) and exerted by the wall portion (11), and resumes its original position when the pressure has decreased.

Toothbrush

A tooth-brush is provided which has a brush shank (4) adapted to be driven electrically by a drive (2) and provided with a brush-head (5) having bristles (6), which brush-head performs movement (8), for example, a loosening movement whose frequency is higher than 30 Hz and whose amplitude is between 0.1 mm and 5 mm, which brush-head performs an additional movement (9), for example, a wiping movement having a frequency of between 1 Hz and 5 Hz. The combination of a rapid loosening movement and a slow wiping movement ensures that the teeth are cleaned in a thorough but gentle manner.

A toothbrush is provided having two housing sections (1, 2) which are pivotable relative to one another, of which a first housing section (1) serves as a handle and accommodates a drive unit (4) for driving a drive shaft (5), and of which a second housing section (2) carries a brush-head (3), which is drivable by the drive shaft, which second housing section (2) is pivotable relative to the drive shaft (5) about a pivot (6). To warn the user against an excessive brushing pressure the toothbrush has a spring device with at least one spring (14) which acts between the second housing section (2) and the drive shaft (5), the second housing section (2) being pivotable relative to the first housing section (1) about the pivot (6) against a pressure exerted by the spring (14) during use of the toothbrush, which spring snaps when a given pressure threshold is exceeded and which pivot is disposed in the second housing section and also forms at least a part of a mechanical coupling between the drive shaft and the second housing section.

A depilation apparatus is provided comprising at least one pair of depilation rollers (3, 4) which can be driven in opposite directions and whose circumferential surfaces have undulatory cross-sectional profiles with which they interengage circumferentially, one of said rollers being adapted to be driven by means of a motor, the undulatory cross-sectional profile of the circumferential surface extends linearly over the whole length of the rollers and the maximum diameter of the depilation rollers is selected to be of the order of magnitude of 4.5 mm and the number of crests of the cross-sectional profile is selected to be the order of magnitude of 10.

Depilation apparatus

An epilation apparatus is provided having at least one pair of rotatably mounted epilation rollers (3, 4), which are arranged in the region of an opening (2) provided in the housing (1) of the apparatus, are rotatingly drivable in opposite directions and cooperate with one another at their periphery. Associated with the epilation apparatus is a skin protection device, which is arranged in the region of the opening (2), partially covering the epilation rollers (3, 4) and through which the hairs reach the epilation rollers (3, 4) the skin protection device is a strip-shaped web (11) of wave-shaped design in relation to the longitudinal extension of the epilation rollers, (3, 4) the web, has wave troughs (9) and wave crests (10) alternately on both sides and is comb-like on both sides.

Epilation apparatus

A depilation apparatus is provided comprising at least one pair of circumferentially cooperating depilation rollers (3, 4, 5, 6) which are arranged at the location of an opening (2) in the apparatus and which are rotatably supported and arranged to be driven in opposite directions of rotation, and also comprising a shear plate (11) which is arranged at the location of the opening in the apparatus, which covers the depletion rollers, and which is formed with elongate hair-entry apertures (12, 13, 14, 15, 16, 17) at the location of the depilation rollers, the elongate hair-entry apertures in the shear plate extending in the longitudinal direction of the depilation rollers and at least up to the ends of the depilation rollers.

A dry-shaving apparatus comprises a shear-shaving section having a first head member formed by an arcuate flexible shear foil providing a working surface, such shear-shaving section including a plurality of reciprocatingly drivable cutters co-operating with the flexible shear foil. Included is a comb-shaving section having a second head member constructed as a rigid trough-shaped part fixedly and permanently connected to the flexible shear foil and provided with a working surface, such comb-shaving section including a reciprocatingly drivable rigid cutter co-operating with the rigid trough-shaped part. The first head member and the second head member together constitute a head-member unit. A cutter unit co-operates with the head-member unit and includes a reciprocatingly drivable support for supporting and driving the cutters of the respective shaving sections. The working surface of the comb-shaving section adjoins the working surface of the shear-shaving section and projects laterally therefrom, the plane defined by the working surface of the comb-shaving section forming an obtuse angle with the plane tangent to the working surface of the shear-shaving section at the location where the two shaving sections adjoin each other. The rigid cutter of the comb-shaving section is supported by the cutter unit support by means of at least one spring.

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Ebental, Austria

Norbert Schneider