A child seat has side walls on left and right sides of a squab portion thereof, and recessed portions for a seat belt passage, respectively. In case of a relatively large-sized infant, a seat belt installed in a vehicle and designed primarily for use by an adult is placed to extend across the squab portion. The seat belt passes through the recessed portions so as to extend closely with the infant's body to protect the infant. In case of a relatively small-sized infant, an impact shield is attached to the seat belt, so that the infant can be protected by the seat belt via the impact shield. Fitting members are fitted in the recessed portions to make the tops of the side walls flat when using the impact shield. The impact shield is stably placed on the side walls having the flat tops.

A child restraint seat is shown having a system for tightening the safety harness belt that includes an adjuster plate with the adjuster plate being slidably mounted on a guide track on the back side of the restraint seat. The adjuster plate includes a belt tensioning portion that contacts the safety harness belt at various positions between two opposite fixed ends of the safety harness belt. Movement of the adjuster plate along the guide track on the back side of the restraint seat causes the belt tensioning portion of the adjuster plate to change the slack length of the safety belt by an amount approximately equal to two times the distance which the adjuster plate is moved along the guide track. A pawl is part of the adjuster plate assembly and is biased into contact with teeth on the guide track to hold the adjuster plate in a predetermined position along the guide track.

The invention is directed to a kinetic child restraint device which is fastened to or integrated into the seat of a vehicle to provide for 360 degree spherical impact protection to significantly reducing the risk of injury to a child in the event of a collision. The restraint device includes a capsule, a pivotally attached bracket and a pivotally attached base. The restraint device is designed so that it will automatically pivot a child forward, rearward and sideways to position the head, neck and back of the child perpendicular to the impact force. The restraint device is also designed to rotate during a collision to dissipate impact forces to reduce the risk of injury to the child.

A kinetic child restraint device which is fastened to or integrated into the seat of a vehicle to provide for 360 degree spherical impact protection to significantly reduce the risk of injury to a child in the event of a collision. The restraint device includes a capsule, a pivotally attached bracket and a pivotally attached base. The restraint device is designed so that it will automatically pivot a child forward, rearward and sideways to position the head, neck and back of the child perpendicular to the impact force. The restraint device is also designed to rotate during a collision to dissipate impact forces to reduce the risk of injury to the child.

A child seat for a vehicle which can be firmly secured to a vehicle seat even with a shoulder belt of a three-point seat belt and which can wind up the seat belt to securely apply a predetermined tension to the seat belt. The child seat includes a child seat and a shaft attached to the child seat. The shaft is rotatable about an axis of the shaft. Additionally, a first end of the shaft is disposed at a higher elevation than a second end of the shaft. The shaft further includes at least one slit configured to accept a seat belt.