An electric rocking chair comprises a chair installed on a support base having a trapezoidal form with the two inclined faces disposed at the front and at the rear sides of the chair, the side's faces supporting the chair. The chair is electrically moved front to back by means of displacement, such as wheels, attached to the front and to the rear under the chair and intended to roll along both inclined faces on a see saw movement operated by means of an electric actuator disposal. The rocking of the chair is performed in two movements, when front wheels are going down along the front inclined face, rear wheels are going up along the rear inclined face, thus inclining the chair forward and the opposite movement inclines the chair backward. Means of maintaining the wheels during the rolling movement can be used, such as a metallic frame.

A seating device includes a training device connected to a component of the base of the seating device. The training device is configured to tilt the seating device to help a user learn how to use the seating device to help the user avoid losing the user's balance while sitting or leaning on the seat of the seating device when the user initially starts to use the seating device. The training device can be releasable from the base of the seating device after the user has learned how to balance on the seating device. The training device can also be reattachable to the seating device to facilitate the training of other users.

A seating device can include a seat and a base connected to the seat to support the seat. A tilt mechanism can be connected to at least one of the base and the seat. The tilt mechanism can include at least one of (a) at least one seat connecting member connecting the seat to an upper portion of the base, (b) a plurality of resilient fingers that are attached to the base to engage a floor and flex in response to a user providing a force while sitting or leaning on the seat, and (c) an elastomeric floor engagement member that is attached to the base and has a bottom peripheral portion that contacts a floor and is flexible in response to a user providing the force. In some embodiments, the tilt mechanism may include all of elements (a)-(c).

A playground rocker provides a rigid platform with lateral side edges suspended from side rails extending along the lateral side edges of the rigid platform. The rigid platform is suspended using broad flexible belts extending along substantially full lengths of the lateral side edges of the platform with the upper edges of the belts wrapped around the side rails and lower edges attached or wrapped along the lateral side edges of the platform. The broad flexible belts allow the rigid platform to sway side to side in a direction generally perpendicular to the side rails.

A reciprocating rocking device for the rocking of a chair or cradle, the chair or cradle having rockers and a seat member, the reciprocating rocking device comprising a base secured to the rockers, the base comprising a first bracket, a second bracket secured to the seat member of the chair or cradle, a tension member connected to the second bracket, an eccentric, the eccentric constantly engaged with the second bracket and, a motor secured to the first bracket, the motor having a drive shaft operatively arranged to drive the eccentric, wherein the motor is coaxially arranged with the eccentric.

A reciprocating rocking device for the rocking of a chair or cradle, the chair or cradle having rockers and a seat member, the reciprocating rocking device comprising a base secured to the rockers, the base comprising a first bracket, a second bracket secured to the seat member of the chair or cradle, a tension member connected to the second bracket, an eccentric, the eccentric constantly engaged with the second bracket and, a motor secured to the first bracket, the motor having a drive shaft operatively arranged to drive the eccentric, wherein the motor is coaxially arranged with the eccentric.

Disclosed is an electromechanical extending device of a movable sofa, which is suitable for a movable sofa, especially for an electric rocking chair or swinging chair. The electromechanical extending device of a movable sofa comprises a mechanical extending device and an electric device, wherein the electric device consists of a motor, a motor front connection tube, a motor rear connection tube, a motor head installation piece, a motor movement sliding block, a sliding block installation piece, a rotating connection piece, and a rotating bended piece, the motor front connection tube is connected with a leg connection piece, the motor head installation piece is connected with the motor front connection tube, the motor head installation piece is connected with the motor in a rotating manner, the motor movement sliding block is installed on a guide rail of the motor, the sliding block installation piece is fixed on the motor rear connection tube, the sliding block installation piece is connected with the motor movement sliding block in a rotating manner, the motor rear connection tube is connected with the rotating bended piece, the rotating bended piece is connected with a rising connection piece in a rotating manner, the rotating connection piece is connected with the rotating bended piece in a rotating manner, and the rotating connection piece is connected with an installation board in a rotating manner. The device has a simple structure, a safe and reliable drive, a high efficiency, a low cost and a good level of comfort.

Disclosed is an electromechanical extending device of a movable sofa, which is suitable for a movable sofa, especially for an electric rocking chair or swinging chair. The electromechanical extending device of a movable sofa comprises a mechanical extending device and an electric device, wherein the electric device consists of a motor, a motor front connection tube, a motor rear connection tube, a motor head installation piece, a motor movement sliding block, a sliding block installation piece, a rotating connection piece, and a rotating bended piece, the motor front connection tube is connected with a leg connection piece, the motor head installation piece is connected with the motor front connection tube, the motor head installation piece is connected with the motor in a rotating manner, the motor movement sliding block is installed on a guide rail of the motor, the sliding block installation piece is fixed on the motor rear connection tube, the sliding block installation piece is connected with the motor movement sliding block in a rotating manner, the motor rear connection tube is connected with the rotating bended piece, the rotating bended piece is connected with a rising connection piece in a rotating manner, the rotating connection piece is connected with the rotating bended piece in a rotating manner, and the rotating connection piece is connected with an installation board in a rotating manner. The device has a simple structure, a safe and reliable drive, a high efficiency, a low cost and a good level of comfort.

A drive apparatus of a chair assembly for a 4D theater according to the present disclosure includes: a lower plate which is in contact with the ground; an upper plate which is positioned above the lower plate so as to be spaced apart from the lower plate; a first actuator which is positioned at a left portion between the lower plate and the upper plate; a second actuator which is positioned at a right portion between the lower plate and the upper plate; and a spline device, in which the spline device is installed to be positioned on a vertical centerline of the lower plate, and the first actuator is installed to have a predetermined first angle with respect to a horizontal centerline of the lower plate.

A drive apparatus of a chair assembly for a 4D theater according to the present disclosure includes: a lower plate which is in contact with the ground; an upper plate which is positioned above the lower plate so as to be spaced apart from the lower plate; a first actuator which is positioned at a left portion between the lower plate and the upper plate; a second actuator which is positioned at a right portion between the lower plate and the upper plate; and a spline device, in which the spline device is installed to be positioned on a vertical centerline of the lower plate, and the first actuator is installed to have a predetermined first angle with respect to a horizontal centerline of the lower plate.