Resources Contact Us Home
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
Provisioning workflow management methods and systems
Catalyst, production process therefor and use thereof
Fluid pouring type actuator
Coplanar alignment apparatus for rotary spindles
Hybrid powertrain with manual transmission and off-latching clutch, and method of operating the same
Dual opposing fiber brushing
Method and system for predicting a latency spike category of audio and video streams to adjust a jitter buffer size accordingly
  Randomly Featured Patents
Method and apparatus for treating toner image bearing receiving sheets
Support system for a variable-crown roll
Antitheft system
Mirror door and door molding with compo frame design
Method and system for dynamic issuance of group certificates
Multi-stage door snap
Method of transmitting and receiving warning broadcast signals during drive in dangerous area, and system thereof
Neurocontrolled adaptive process control system
Method of making a multilayer tool surface with PCNA interruption of CVD, and tool made by the process
Printer capable of correcting distance between print head and print paper after lid is opened