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
Vibrating footwear device and entertainment system for use therewith
Systems and methods for a retirement location advisor
System and method for real time trading computer game
Twitch toy
Plurality of individually controlled inlet guide vanes in a turbofan engine and corresponding controlling method
Aircraft supplemental liquid cooler and method
Image forming system, information processing device, image forming device, data transmission method and memory product
  Randomly Featured Patents
Picture print generating method and system, and recording medium
Portable protective fence and method of installation thereof
Method of producing carrot juice
Method of manufacturing a part of a MEMS system
Method and apparatus for automatic selection and operation of a subscriber line spectrum class technology
Halftone mask, method of manufacturing the same, and method of manufacturing an array substrate using the same
Condom exerting lateral pressure on the penis
Shelf support strip
Packaging film with a transparent barrier coating
Seat belt control device and method