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
Coating composition, and a process for producing the same
Community profiling for social media
Imaging lens
Rear bumper for an automobile
Improving alignment target contrast in a lithographic double patterning process
Clusterin antisense therapy for treatment of cancer
Resistor and manufacturing method thereof
  Randomly Featured Patents
Methods for mobilizing hematopoietic progenitor cells from bone marrow into peripheral blood in a patient in need of chemotherapy
Beverage dispenser
Substrate processing apparatus and method
Cutting member for agricultural mower
Molecular markers
Pyrano derivatives, a process for their preparation and their use
Method of machining crankshafts
Covered bubbler head for a drinking fountain
Identification of edge regions from 3D point data
Circuit for repair of flash memory cells and a method of repair