Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
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
Wireless device with extendable antenna
High performance data transport system and method
Functionalized main chain polymers
Semiconductor device and method of manufacturing the same
Compositions of PD-1 antagonists and methods of use
Method to trace video content processed by a decoder
Wireless communications apparatus and wireless communications method
  Randomly Featured Patents
Synthetic peptide targeting critical sites on the SARS-associated coronavirus spike protein responsible for viral infection and method of use thereof
System and method to speed-up operation of a driver
Utility vehicle and assembly of engine and transmission for utility vehicle
Method for washing device substrate
Side panel for a shoe upper
Method and apparatus for calculating an initial transmission power in universal mobile telecommunications system user equipment
Method to anchor foils for green-tape circuits
Information recording method, information recording medium, and information reproducing method, wherein information is stored on a data recording portion and a management information recording
Digital video disc player
Systems and methods for distributing personalized information over a communications system