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
Assigning runtime artifacts to software components
Adjustable high precision surveying device
Communication device and two-dimensional communication system using the same
Optical cable plug-in detection
Organic electroluminescence element
Latch-up free ESD protection
Monitoring agent programs in a distributed computing platform
  Randomly Featured Patents
Dental implant system and method
Protected fischer-tropsch catalyst and method of providing same to a fischer-tropsch process
Adaptive sequence estimation for digital cellular radio channels
Adaptive control system having hedge unit and related apparatus and methods
Method of reducing access when passing data from external memory through buffer to data processor by allocating buffer portion for receiving external memory's identification data
Vehicle catalyst exhaust system for an internal-combustion engine
Sub-ambient temperature electronic package
Hybrid laser and inkjet printer
Rotatable elliptical dielectric resonators and circuits with such dielectric resonators
Method and apparatus for orienting articles