An ergonomic headrest assembly which can be used by a user such as a passenger on an airplane or other vehicle to prevent or restrict side-to-side head movements of the user to enhance comfort of the user may include a lower portion. A headrest portion may be provided on the lower portion. The headrest portion may include a middle headrest section. A pair of side headrest sections may extend from the middle headrest section. The side headrest sections may be adjustable at selected angles with respect to the middle headrest section to support and prevent or restrict side-to-side movement of the head of a user as the middle headrest section of the headrest portion supports the user's head.

An ergonomic headrest assembly which can be used by a user such as a passenger on an airplane or other vehicle to prevent or restrict side-to-side head movements of the user to enhance comfort of the user may include a lower portion. A headrest portion may be provided on the lower portion. The headrest portion may include a middle headrest section. A pair of side headrest sections may extend from the middle headrest section. The side headrest sections may be adjustable at selected angles with respect to the middle headrest section to support and prevent or restrict side-to-side movement of the head of a user as the middle headrest section of the headrest portion supports the user's head.

A dynamic damper is provided which includes a weight, an elastic member that supports the weight so as to allow vibration, and a damper case that houses the weight and the elastic member, wherein the dynamic damper also includes corner part checking means for checking at least some corner parts among corner parts where at least one end face of the weight and first and second side faces that are each continuous from the one end face and are adjacent to each other meet. This enables the ease of assembly to be enhanced by enabling a corner part of a weight to be checked when assembling the weight into a damper case, and also enables the state in which the elastic member is mounted on an end part of the weight to be easily checked.

A dynamic damper is provided which includes a weight, an elastic member that supports the weight so as to allow vibration, and a damper case that houses the weight and the elastic member, wherein the dynamic damper also includes corner part checking means for checking at least some corner parts among corner parts where at least one end face of the weight and first and second side faces that are each continuous from the one end face and are adjacent to each other meet. This enables the ease of assembly to be enhanced by enabling a corner part of a weight to be checked when assembling the weight into a damper case, and also enables the state in which the elastic member is mounted on an end part of the weight to be easily checked.

Apparatus (10) for a vehicle seat, the apparatus (10) comprising a first supporting means (12) and a second supporting means (14), the first supporting means (12) comprising a storage means (16) and the second supporting means (14) being a headrest comprising a cover (18) for covering the storage means (16), the headrest being arranged to have a deployed condition and a retracted condition, wherein in the deployed condition the storage means (16) in the first supporting means (12) is at least partially uncovered, and in the retracted condition the storage means (16) in the first supporting means (12) is covered by the cover (18).

Apparatus (10) for a vehicle seat, the apparatus (10) comprising a first supporting means (12) and a second supporting means (14), the first supporting means (12) comprising a storage means (16) and the second supporting means (14) being a headrest comprising a cover (18) for covering the storage means (16), the headrest being arranged to have a deployed condition and a retracted condition, wherein in the deployed condition the storage means (16) in the first supporting means (12) is at least partially uncovered, and in the retracted condition the storage means (16) in the first supporting means (12) is covered by the cover (18).

An actuating pillow includes a pillow body and a plurality of artificial muscles arranged within the pillow body. Each of the artificial muscles includes a housing having an electrode region and an adjacent expandable fluid region, an electrode pair positioned in the electrode region of the housing, and a dielectric fluid housed within the housing. The plurality of artificial muscles are configured to actuate from a non-actuated state to an actuated state, actuation from the non-actuated state to the actuated state directs the dielectric fluid into the expandable fluid region and increases a height of the pillow body.

An actuating pillow includes a pillow body and a plurality of artificial muscles arranged within the pillow body. Each of the artificial muscles includes a housing having an electrode region and an adjacent expandable fluid region, an electrode pair positioned in the electrode region of the housing, and a dielectric fluid housed within the housing. The plurality of artificial muscles are configured to actuate from a non-actuated state to an actuated state, actuation from the non-actuated state to the actuated state directs the dielectric fluid into the expandable fluid region and increases a height of the pillow body.

A device for reducing a kinetosis-related disorder in a driving mode of a vehicle includes a vehicle seat with a headrest and an actuator system. The vehicle seat and/or the headrest is adjustable by the actuator system to position the headrest relative to a head of an occupant on the vehicle seat. A support region of the headrest includes a material which is elastically switchable and the material is solidifiable when a pressure is exerted on the material such that the material stiffens when the head of the occupant sinks into the support region.

A device for reducing a kinetosis-related disorder in a driving mode of a vehicle includes a vehicle seat with a headrest and an actuator system. The vehicle seat and/or the headrest is adjustable by the actuator system to position the headrest relative to a head of an occupant on the vehicle seat. A support region of the headrest includes a material which is elastically switchable and the material is solidifiable when a pressure is exerted on the material such that the material stiffens when the head of the occupant sinks into the support region.