Cam-driven four-way head restraint assembly

A vehicle seat having a head restraint assembly adapted to operatively engage the seat back of a vehicle seat and provide four-way adjustment, said vehicle seat comprising:

• a lower seat assembly supported on a mounting assembly to operatively secure said lower seat assembly to a vehicle;
• a seat back operatively supported by said lower seat assembly;
• a head restraint assembly adapted to provide four-way adjustment, said head restraint assembly including a frame adapted to operatively engage the seat back of a vehicle, said head restraint assembly further including a housing adapted to operatively engage a portion of said frame, said housing including at least one aperture disposed along a horizontal axis perpendicular to said frame, said head restraint assembly further including a cam assembly disposed within said housing adapted to provide fore/aft adjustment of said housing relative to said frame, said cam assembly including a camshaft extending along the horizontal axis and at least two drum assemblies operatively supported by said camshaft, said cam assembly further including a contact plate extending parallel to said camshaft and adapted to releasably engage said drum assemblies, said camshaft operatively connected to said contact plate to provide releasable engagement between said contact plate and said drum assemblies, said head restraint assembly further including a control member adapted to operatively engage said cam assembly and provide for fore/aft and vertical adjustment in response to user input.