Resources Contact Us Home
Aircraft ejection seat with adjustable headrest

Image Number 4 for United States Patent #7500639.

An aircraft ejection seat includes a frame and a headrest. The vertical position of the seat is adjusted by a pair of motor driven lead screws that cooperate with threaded barrel nuts attached to the seat frame. The upper end of one of these motor driven lead screws drives a slip coupling driving a splined shaft. The splined shaft then drives a gearbox mounted to the seat frame. The gearbox in turn drives an upper lead screw, which acts on an upper barrel nut to move the headrest up and down relative to the seat frame. The upper lead screw is driven in the opposite direction from the lower lead screws. Consequently, as the seat moves up to accommodate a shorter pilot, the headrest moves down to accommodate the shorter torso of the shorter pilot.

  Recently Added Patents
Method of operating a split gate flash memory cell with coupling gate
Apparatus for merging spatial audio streams
Pressure-sensitive adhesive composition having an improved release behavior
System for determining movement properties of a guided vehicle
Tab visibility
Interaction analysis and prioritization of mobile content
Mechanical and moisture protection apparatus for electronic devices
  Randomly Featured Patents
Recombinant baculovirus and its use as a biocontrol agent for crop pests
Aircraft infrared guided defense missile system
Powered boat hull
Aircraft toilet facility
Information processing device, menu displaying method and program storing medium
Processing method for localization of acoustic image for audio signals for the left and right ears
Method for fabricating a shallow ion implanted microelectronic structure
Apparatus and methods for generating an electronic signal responsive to selected light
Wireless earphone for use in Bluetooth piconets
Knowledge-based content sub-setting method for variable information printing