A generic system for enabling resonant oscillations along multiple axes includes a load and an actuator. The load represents a mass or structure that is desired to be oscillated, and is subject to a restoring force by suitable mechanisms upon displacement of the load. The actuator is designed to rotate an eccentric mass about a first axis. Responsive to the rotation of the eccentric mass, the actuator is designed to cause the load to oscillate in the direction of each of a second axis and a third axis.

The disclosure relates to an open-loop cooling system installed on a refrigerated barge for removing heat from an external heat exchanger. The system includes an open loop with a pump drawing water from the environment and forcing the water across the outer surface of the heat exchanger to augment existing heat removal due to contact with and flow of water across the heat exchanger due to the motion of the barge. A fluid is forced across the side faces and inner faces of the cooler to increase heat transfer from the barge closed-loop cooling system to the water environment.

A swing chair includes: a support which is installed at a certain height or more above the floor; a main operation member elongated and having a virtual first rotation axis provided to the support at one side thereof and rotatably coupled to the support; a sub operation member elongated and having a virtual second rotation axis, provided to the support at one side thereof and spaced parallel to the first rotation axis, and rotatably coupled to the support; a seat portion coupled to any one of the main operation member and the sub operation member; and a rotation connecting member elongated and arranged in a front-rear direction and having a rear portion that is rotatably coupled to the other side of the main operation member and a front portion that is rotatably coupled to the other side of the sub operation member.

A rocking device attachable to an infant sleep structure is disclosed. The rocking device includes a main body having a curved rocking edge. The rocking device also includes an actuator mounted on the main body. The rocking device further includes at least one stabilizing leg mounted on the main body. The actuator includes arms connecting to the at least one stabilizing leg. When in use, the actuator is configured to actuate the at least one stabilizing leg at a deployed position to prevent the rocking device from rocking, or to actuate the at least one stabilizing leg at a non-deployed position to permit rocking. Also a stretcher assembly for stretching a play yard mattress is disclosed. The stretcher assembly includes an adjustment sleeve. The adjustment sleeve is configured to deploy the stretcher sleeve to an expanded state or a stretched state.

A rocking device attachable to an infant sleep structure is disclosed. The rocking device includes a main body having a curved rocking edge. The rocking device also includes an actuator mounted on the main body. The rocking device further includes at least one stabilizing leg mounted on the main body. The actuator includes arms connecting to the at least one stabilizing leg. When in use, the actuator is configured to actuate the at least one stabilizing leg at a deployed position to prevent the rocking device from rocking, or to actuate the at least one stabilizing leg at a non-deployed position to permit rocking. Also a stretcher assembly for stretching a play yard mattress is disclosed. The stretcher assembly includes an adjustment sleeve. The adjustment sleeve is configured to deploy the stretcher sleeve to an expanded state or a stretched state.

A baby seat and carrier system structured and arranged to comfort and calm an infant when a caregiver is not able to by soothing and swaddling an infant in a gentle, womb-like environment, holding the infant in a natural cradling position while a rocker stand provides a relaxing continuous motion while a removable white noise generator blocks out the tumult of the outside world

A portable vibration device for soothing an infant. The portable vibration device includes a vibration pad portion, a control pad connected and a neck portion. The neck portion extends between the vibration pad and the control pad. A vibration circuit is provided to control a vibration element in the vibration pad. The circuit electrically connects the control pad to the vibration pad. A cushion is provided around the vibration pad portion and a cover is disposed around the cushion and the internal components of the vibration device.

A portable vibration device for soothing an infant. The portable vibration device includes a vibration pad portion, a control pad connected and a neck portion. The neck portion extends between the vibration pad and the control pad. A vibration circuit is provided to control a vibration element in the vibration pad. The circuit electrically connects the control pad to the vibration pad. A cushion is provided around the vibration pad portion and a cover is disposed around the cushion and the internal components of the vibration device.

A drive mechanism which is adapted for use with a swing device includes two symmetrically-disposed electromagnetic driving units and a control unit. The electromagnetic driving units are adapted to be pivotally connected to a bottom of the swing device. The control unit is electrically connected to the electromagnetic driving units for controlling the electromagnetic driving units to be alternately activated and deactivated, so as to generate an intermittent magnetic force to drive swinging movement of the swing device. The swing device including the drive mechanism is also disclosed.

An apparatus for rocking a piece of furniture to which it is attached. The rocking apparatus includes at least one rolling mechanism that, when in operation, rotates the rolling mechanism around an axis of rotation causing a rocking action. The apparatus may be utilized for rocking a variety of pieces of furniture such as a safety infant car seat, a stroller seat, a rocking chair, a swing or a hammock. According to some embodiments the rolling mechanism is connected to a driving portion.