Child restraint apparatus for vehicle

Claim 1

Child restraint apparatus for restraining a child within a vehicle interior, the apparatus having a body comprising an internal area for receiving a child, and an energy absorbing member which, in use, extends over at least part of an external surface of the body and which faces away from the internal area, the energy absorbing member comprising an airtight membrane enclosing a layered arrangement of resilient foam that in its uncompressed state substantially defines the shape of the energy absorbing member, each layer of foam of the layered arrangement having a different energy absorbing characteristic, the airtight membrane further including a vent defined therethrough that provides an open air flow pathway between an interior chamber of the airtight membrane and the exterior, such that air is expelled from the chamber upon impact and air is taken in to re-inflate the chamber for a subsequent use, wherein the air flow pathway through the vent remains open prior to and subsequent to impact.

Claim 11

A method of operating a child restraint apparatus within a vehicle, the apparatus having an externally positioned energy absorbing member in the form of a vented deformable chamber, the method comprising the steps of: providing a child restraint apparatus including an energy absorbing member comprising an airtight membrane enclosing a layered arrangement of resilient foam that in its uncompressed state substantially defines the shape of the energy absorbing member, each layer of foam of the layered arrangement having a different energy absorbing characteristic, the airtight membrane further including a vent defined therethrough that provides an open air flow pathway between an interior chamber of the airtight membrane and the exterior, such that air may be expelled from the chamber upon impact and air is taken in to re-inflate the chamber for a subsequent use, wherein the air flow pathway through the vent remains open prior to and subsequent to impact; providing the child restraint apparatus in a vehicle interior with the chamber collapsed and the vent closed, then with the child restraint apparatus in position in vehicle, opening the vent such that air enters the chamber, the vent thereafter being left open so as to provide controlled venting in the event of a deformation of the chamber as a result of an accident.

Claim 12

A method of operating a child restraint apparatus within a vehicle, the apparatus having an externally positioned energy absorbing member in the form of a vented deformable chamber, the method comprising the steps of: providing a child restraint apparatus including an energy absorbing member comprising an airtight membrane enclosing a layered arrangement of resilient foam that in its uncompressed state substantially defines the shape of the energy absorbing member, each layer of foam of the layered arrangement having a different energy absorbing characteristic, the airtight membrane further including a vent defined therethrough that provides an open air flow pathway between an interior chamber of the airtight membrane and the exterior, such that air may be expelled from the chamber upon impact and air is taken in to re-inflate the chamber for a subsequent use, wherein the air flow pathway through the vent remains open prior to and subsequent to impact; providing the child restraint apparatus in a vehicle interior with the chamber collapsed and the vent closed, then with the child restraint apparatus in position in vehicle, opening the vent such that air enters the chamber, the vent thereafter being left open so as to provide controlled venting in the event of a deformation of the chamber as a result of an accident.