Aircraft ejection seat safetying device
AssigneeThe United States of America as represented by the Secretary of the Air Force
InventorPhilip K. Vollmoeller
Life of this patent
Estimating the term…
Abstract
The device retains the ejection seat arm/dearm lever in safe position to allow the seat to be tilted safely for required maintenance and repair work. A bolt positioned through a clearance hole in an inverted U-shaped base member engages threads in the ejection seat structure. An upstanding brace extends upward from one end of the base member at an angle to abut the seat ejection arming lever to physically block and prevent its movement into the armed position. The bolt is retained in the base member by a cotter pin through the body of the bolt under the head to allow turning while preventing separation from the base.
Claims2
A safetying device for attachment to an aircraft ejection seat having an arm/dearm lever positioned thereon, said device comprising an inverted U-shaped base member having a clearance hole through the center of the upper portion thereof, a bolt having a knurled head portion, a body portion and a threaded end portion positioned through the clearance hole in said base member, means for preventing said bolt from separating from the device when not in position on the seat, an upstanding brace portion extending upward at an angle adjacent to the arm/dearm lever on the ejection seat to prevent accidental arming thereof, and a red flag attached to said safetying device to indicate that the device is in position thereby allowing the ejection seat to be tilted forward for maintenance and repair work to be accomplished on avionics systems behind and under the seat without danger of accidentally arming the arm/dearm lever.
Dependencies are inferred from the claim text.