Head rest with adjusting devices

Claim 1

A head rest for attachment to the back of an automobile seat comprising a bar pivotable about an axis at one end to the back of said seat, an energy absorbing body, a housing in said energy absorbing body telescoped over the other end of said bar, tooth means positioned along the length of said bar and means carried by the housing interfitting with the tooth means for holding the housing in different telescoped positions of adjustment on said bar, said bar extending radially from the axis of pivoting and the adjusting movement of said housing being radial with respect to the axis of pivoting, the means carried by the housing comprising a block member located within the housing and having a plurality of teeth which are complemental to and interfit with said tooth means on said bar, the block member being located in an enlarged portion of the housing at its bottom end, a means being also carried by the housing at said enlarged portion for urging said bar and said block towards each other, and resilient means being provided between the bar and the housing at the upper end of the bar.