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
Active matrix substrate, method for manufacturing same, and liquid crystal display apparatus
Device to control force required to depress accelerator pedal
Apparatus for touch screen avionic device
Lookup front end packet input processor
Method and system for simulating wireless networks
Use of endogenous promoters in genetic engineering of Nannochloropsis gaditana
Pallet
  Randomly Featured Patents
Preparation of cation-exchange resin
Radiopharmaceutical pig
Method and apparatus implementing retransmission in a communication system providing H-ARQ
Hybrid sensor including a five-input-three-input converter generating a hybrid signal
Method for producing ultra-clean gasoline
Method for measuring by ultra-sound the residual tension of a pre-stressed bar
Additives for polymer compositions
Pinball drop target assembly
Power unit suspension in motor vehicles
Applicator bottle