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
Method, system and computer program product for verifying floating point divide operation results
Method for manufacturing a turbine engine vane
Mobile communication device
Techniques for performing translation of messages
Method of requesting CQI reports
Image signal processing apparatus and image signal processing method
Dose escalation enzyme replacement therapy for treating acid sphingomyelinase deficiency
  Randomly Featured Patents
Tunnel incinerator
Process for producing 2, 3, 3', 4',-biphenyltetracarboxylic dianhydride
Methods and apparatus for borehole-corrected spectral analysis of earth formations
Single piece punched and bent neutral lead
First-order balancer of internal combustion engine
Unloading gate for bulk material handling containers
Fuel feeding device for fuel injector
Method and apparatus for controlling gas flow to a processing chamber
Method and machine for washing and bleaching textiles
Electronically variable MTF filter for image sensor arrays