Abstract: Devices and methods for applying oral care with an adaptable mouthpiece assembly. The adaptable mouthpiece assembly includes a support plate configured to be inserted in a mouth of a user, and a chain member configured to accommodate a section of teeth and gum of the user. The chain member includes a plurality of shackles that are arranged successively on the support plate and that are hingeably coupled to each other. A posterior shackle is coupled to the support plate via a first fixed pivot. An anterior shackle is coupled to the support plate via a movable pivot. A configuration of the plurality of shackles is adjustable by allowing the plurality of shackles to move freely in a horizontal plane along the support plate between the first fixed pivot and the movable pivot.

Abstract: A shaver head for an electric shaver has at least two hair-cutting units, each of which includes an external cutting member and an internal cutting member that is rotatable relative to the external cutting member. Each of the hair-cutting units is supported by a supporting portion that is linearly movable under the bias of a spring member relative to a base portion of the shaver head between a first, retracted position and a second, extended position. The shaver head has a locking mechanism for selectively locking the supporting portion in a locked position relative to the base portion allowing a user to select different shaving modes.

Abstract: Power toothbrushes and mouthpiece assemblies for cleaning teeth are provided. The mouthpiece assembly includes a bite block, an upper mouthpiece, and a lower mouthpiece. The bite block is configured to engage at least one tooth of the first set of teeth and at least one tooth of the second set of teeth. A driving mechanism is provided for driving movement. The bite block, the at least one tooth of the first set of teeth, and the at least one tooth of the second set of teeth create a static arrangement relative to movement of the upper mouthpiece and the lower mouthpiece when the user bites on the bite block. Movement of the upper mouthpiece and the lower mouthpiece, driven by the driving mechanism, is uninhibited when the user bites on the bite block.

Abstract: A shaving unit for a shaving apparatus including a cutting unit, a main input spindle coupled to each cutting unit to drive an internal cutting member, and a system for adjusting operational parameters of the shaving unit. The adjustment system includes an adjustment input drive member drivable by the spindle, a unidirectional coupling member for coupling the spindle and the adjustment input drive member, when rotating in a first direction, such that the adjustment input drive member is driven by the spindle. A decoupled condition of the spindle and the adjustment input drive member is also provided when the spindle rotates in a second direction, such that the spindle is prevented from driving the member.

Abstract: A hair-cutting unit for use in a hair-cutting appliance comprises includes cutting members a base member, and a supporting member which is pivotable relative to the base member and accommodates the cutting members. The hair-cutting unit further includes a holding member which is pivotable relative to the supporting member between a holding position of holding the cutting members in an operational position in the supporting member, and a releasing position of releasing the cutting members for removal from the supporting member, and a biasing mechanism which is configured to bias the holding member towards the holding position. At least in an opened position of the supporting member, pivoting of the holding member out of the holding position is prevented solely by the biasing force of the biasing mechanism.

Abstract: A shaver includes a housing and at least one cutter accommodated by the housing. Each cutter includes an external cutting member and an internal cutting member which is rotatable relative to the external cutting member about an axis of rotation. A locking system is configured and arranged to prevent rotation of the external cutting member relative to the housing. The locking system includes an annular array of N1 first arresting elements and N2 second arresting elements, wherein N1?8 and 1?N2?N1. The N2 second arresting elements are configured and arranged to be each engageable with a respective one of the N1 first arresting elements in any of N1 angular positions of the external cutting member about the axis of rotation relative to the housing.

Abstract: According to an aspect, there is provided a mounting assembly (12) for a hair cutting appliance, the mounting assembly comprising a head (16) for receiving a cutting unit (14); and a body (18). The head is mounted to the body by a four-bar linkage (20) having a coupler link (22) associated with the head, a frame link (24) associated with the body, and two arms (26) extending therebetween. The frame link is connected to each arm at respective joins (28), and the coupler link is connected to each arm at respective joins. Pivoting movement of the arms about parallel linkage axes (30) passing through each join permits rotation of the coupler link relative to the frame link about a virtual pivot (32). One of the coupler link and the frame link is a first link coupled to the arms by two-degree-of-freedom joins, thereby permitting the arms and the other of the frame link and the coupler link to further pivot in unison relative to the first link about a rotation axis (34) perpendicular to the linkage axes.

Abstract: The invention relates to a coupling structure (8, 9, 10) for coupling a drive shaft (6) of a main body (2) of a hand-held appliance (1) to a driven part (7) of a releasable functional attachment (3) of the hand-held appliance (1). The coupling structure comprises a coupling bush (8), a coupling head (9) and a coupling spring (10). The coupling head (9) is axially fixed within the functional attachment (3), the coupling bush (8) is axially displaceable within the main body (2). The coupling spring (10) is housed in the main body (2) and urges displacement of the coupling bush (8) towards the coupling head (9), when the functional attachment (3) is attached to the main body (2). The coupling structure is compact, especially in the axial direction of the coupling structure, and especially within the functional attachment.

Abstract: A coupling assembly is provided which includes a coupling element and a retaining member. One of the coupling element and the retaining member includes at least one cam element and another of the coupling element and the retaining member includes at least one notch. Both the cam element and the notch have two oppositely sloped surfaces. In a coupled position of the coupling assembly, the cam element and the notch only contact each other at two sides through the sloped surfaces at the position of a contact portion at a base of the cam element and an associated contact portion of the notch at an open side of the notch.

Abstract: According to an aspect, there is provided a mounting assembly (12) for a hair cutting appliance, the mounting assembly comprising a head (16) for receiving a cutting unit (14); and a body (18). The head is mounted to the body by a four-bar linkage (20) having a coupler link (22) associated with the head, a frame link (24) associated with the body, and two arms (26) extending therebetween. The frame link is connected to each arm at respective joins (28), and the coupler link is connected to each arm at respective joins. Pivoting movement of the arms about parallel linkage axes (30) passing through each join permits rotation of the coupler link relative to the frame link about a virtual pivot (32). One of the coupler link and the frame link is a first link coupled to the arms by two-degree-of-freedom joins, thereby permitting the arms and the other of the frame link and the coupler link to further pivot in unison relative to the first link about a rotation axis (34) perpendicular to the linkage axes.

Abstract: A hair-cutting unit (4) for use in a hair-cutting appliance comprises cutting members (41, 42), a base member (5), and a supporting member (6) which is pivotable relative to the base member (5) and accommodates the cutting members (41, 42). The hair-cutting unit (4) further comprises a holding member (7) which is pivotable relative to the supporting member (6) between a holding position of holding the cutting members (41, 42) in an operational position in the supporting member (6), and a releasing position of releasing the cutting members (41, 42) for removal from the supporting member (6), and a biasing mechanism (8) which is configured to bias the holding member (7) towards the holding position. At least in an opened position of the supporting member (6), pivoting of the holding member (7) out of the holding position is prevented solely by the biasing force of the biasing mechanism (8).

Abstract: A shaver head (12) for an electric shaver (10) has at least two hair-cutting units (13), each comprising an external cutting member and an internal cutting member which is rotatable relative to the external cutting member, and each supported by a supporting portion (26). The supporting portion is linearly movable under the bias of a spring member (30) relative to a base portion (20) of the shaver head between a first, retracted, position and a second, extended, position. The shaver head has a locking mechanism (30, 32) for selectively locking the supporting portion in a locked position relative to the base portion. This allows a user to select different shaving modes.

Abstract: A hair-cutting unit for a shaving device, the hair-cutting unit including a hair-cutting element and a telescopic drive-shaft. The drive-shaft comprises a first shaft-segment, which is in telescopic engagement with a co-rotating second shaft-segment, which itself is in telescopic engagement with a co-rotating third shaft-segment. A spring presses the first telescopic shaft-segment and the third telescopic shaft-segment away from one another. In an embodiment, the first and second telescopic shaft-segments are in mutual tillable engagement, and/or the second and third telescopic shaft-segments are in mutual tillable engagement.

Abstract: A shaving unit for a shaving apparatus including a cutting unit, a main input spindle coupled to each cutting unit to drive an internal cutting member, and a system for adjusting operational parameters of the shaving unit. The adjustment system includes an adjustment input drive member drivable by the spindle, a unidirectional coupling member for coupling the spindle and the adjustment input drive member, when rotating in a first direction, such that the adjustment input drive member is driven by the spindle. A decoupled condition of the spindle and the adjustment input drive member is also provided when the spindle rotates in a second direction, such that the spindle is prevented from driving the member.

Abstract: A motion transmission unit for a drive train of a hair cutting appliance includes an input shaft, an eccentric portion, a motion converter, and a tilting lever that engages a driving portion of a blade set. The motion converter is arranged between the input shaft and the tilting lever. The eccentric portion engages a motion converter input interface. A motion converter output interface engages the tilting lever input interface and includes a cylindrical portion defining a cylinder axis parallel to a swivel axis of the tilting lever. A tilting lever output interface includes a head portion defining a cylinder axis parallel to a swivel axis of the tilting lever. The cylinder axis of the head portion and the cylinder axis of the cylindrical portion are parallel to the swivel axis.

Abstract: For releasably coupling a body and a head of a personal care appliance, a coupling assembly is provided which comprises a coupling element and a retaining member. One of the coupling element and the retaining member comprises at least one cam element (55) and another of the coupling element and the retaining member comprises at least one notch (46). Both the cam element (55) and the notch (46) have two oppositely sloped surfaces (48; 57). In a coupled position of the coupling assembly, the cam element (55) and the notch (46) only contact each other at two sides through their sloped surfaces (48; 57) at the position of a contact portion (55a) at a base of the cam element (55) and an associated contact portion (46a) of the notch (46) at an open side of the notch (46).

Abstract: A hair cutting appliance comprises an external cutting member and an internal cutting member arranged rotatable to the external cutting member for cutting hair.

Abstract: A shaver for a shaving apparatus includes at least first and second cutters which respectively have first and second external cutting members with a plurality of hair entry openings which define, respectively, first and second shaving tracks. The cutters each have an internal cutting member which is respectively rotatable relative to the corresponding external cutting member about first and second axis of rotation. The internal cutting members are respectively connected to first and second driven transmission element via first and second drive spindles. The driven transmission elements are included in a transmission unit, where the drive spindles extend from the transmission unit via an open space, which is present between the transmission unit and the cutting units, and respectively pass through an opening in a bottom wall of a first housing of the first cutting unit and a second housing of the second cutting unit.

Abstract: A shaving unit for a shaving apparatus has at least two cutting units each including an external cutting member having hair entry openings and an internal cutting member which is rotatable relative to the external cutting member about an axis of rotation. Each cutting unit has a housing accommodating a hair collection chamber. A cover portion of the housing is releasably coupled to a base portion. The external and internal cutting members are held in an operating position in the cover portion by a holding component which is releasably coupled to the cover portion. The base portion of the housing of each cutting unit has a supporting structure where, in the closed position of the housing, the external cutting member is directly supported by the supporting structure at least in an axial direction parallel to the axis of rotation.

Abstract: The invention relates to a shaving unit comprising a housing and at least one cutting unit accommodated by the housing. Each cutting unit comprises an external cutting member and an internal cutting member which is rotatable relative to the external cutting member about an axis of rotation. A locking system is configured and arranged to prevent rotation of the external cutting member relative to the housing. Said locking system 5 comprises an annular array of N1 first arresting elements and N2 second arresting elements, wherein N1?8 and 1?N2?N1. The N2 second arresting elements are configured and arranged to be each engageable with a respective one of the N1 first arresting elements in any of N1 angular positions of the external cutting member about the axis of rotation relative to the housing.