or
Bookmark and Share
Protection device for arms of ejection seat occupant
   
Document Number
US Patent 4081156
Issued Date
March 28, 1978
Link
Inventors
Map
Abstract
Triangular net-like arm restraining members, one for each side of an aircraft ejection seat, extend during the first phase of ejection so that each has an upper corner near the top of the back portion of the seat, a front corner near the front of the horizontal seat portion, and a lower corner near the junction of the back and seat portions. The upper corner of each restraining member is anchored near the top of the back portion, at its side thereof. The restraining members are normally furled and extend laterally outwardly from the back portion to the cabin wall, thence forwardly along the cabin wall, to be spaced, embracing relation to the seat occupant's shoulders. Upon ejection, one tension element for each restraining member draws its front corner forwardly, downwardly and laterally inwardly; another draws its lower corner downwardly.
Drawing
Protection device for arms of ejection seat occupant - US Patent 4081156 Drawing
Drawing from US Patent 4081156
Tags:
Description:
Amusing 0%
Clever 0%
Complex 0%
Efficient 0%
Historic 0%
Important 0%
Innovative 0%
Interesting 0%
Practical 0%
Simple 0%
Number of Claims:
11
Comments:
no comments yet
Owner
Saab-Scania Aktiebolag (Linkoping,SW)
Published
March 28, 1978
Application Number
05/762,240
Filed
January 25, 1977
US Classification
244/122AG   244/122R 297/466
Int'l Classification
B64D   25/00   (20060101)   B64D   25/02   (20060101)  
Attorney/Law Firm
Priority Data
Jan 28, 1976 [SW] 7600854
USPTO Field of Search
244/122R   244/122A   244/122AE   244/122AG   244/122AH   244/121   244/141   297/384   297/390  
Related Patents
4215835 - Arm net system for ejection seats

A seat mounted arm restraint net system for restraining a crewman's arms during an ejection sequence wherein a pair of nets, mounted with one on each side of the seat, are deployable by separate static lines passing through snubber boxes to frangible anchorages on the vehicle floor. Each static line is releasably attached to a separate swinging arm rotatably secured to its seat side such that the swinging arms throw the free net sides laterally outwards and then release the nets to close over the crewman's arms.

4676462 - Aircraft ejection seats - Owned by Engineering Patents & Equipment Limited (St. Peter,GB)

An arm restraint system for an aircraft ejection seat comprises triangular nets, each secured at one of its corners to a respective upper point on the side of the seat back and at another of its corners to a respective lower point on the side of the seat back. The remaining corner of each net is secured to one end of a respective retraction line which passes through a respective reversing arrangement at the front of the respective side wall of the seat, along a respective conduit extending along the side of the seat, to gas-powered line-retraction device mounted in the seat back. In the normal position, each line, from its point of attachment to the net, extends through an eye provided on a respective projectile carried by the seat. When an ejection sequence is initiated, the projectiles are thrown transversely outwardly from the seat back and the lines retracted to pull the outwardly thrown ends of the nets forwardly to pass on the outside of the airman's arms and restrain the airman's arms from moving outwardly during ejection of the seat from an aircraft.

4359200 - Limb retention system for aircraft ejection seat - Owned by Stencel Aero Engineering Corporation (Arden, NC)

A pilot limb retention system for an aircraft ejection seat comprising two main straps, two secondary straps and two nets coupled to the seat. The system includes a stowage assembly and a deployment system for the straps and nets. The stowage assembly comprises two compartments in the seat back and two compartments in the seat pan. The deployment system comprises four inflatable bladders, two adjacent the knees of the pilot on opposite sides of the seat pan and two adjacent the shoulders of the pilot on opposite sides of the seat back. These bladders are also stowed in the compartments and are releasably connected to the main straps.

5415366 - Arm restraint - Owned by McDonnell Douglas Corporation (St. Louis, MO)

An arm restraint system for an ejection seat of an aircraft. The arm restraint system includes a pair of shrouds that are attached to the seat and each contain an outer channel. Extending through each outer channel is a corresponding strap that is coupled to the cockpit and fastened to a ring on the belt of the pilot. When the seat is ejected, the straps are pulled and the shrouds are deployed onto the arms of the pilot. The shrouds extend to a position which captures the wrists of the pilot, thereby preventing both sideward and upward movement of the arms.

4482112 - Windblast arm protector assembly - Owned by The United States of America as represented by the Secretary of the Air (Washington, DC)

A windblast arm protector assembly for use by an occupant of an open-type ejection seat of an aircraft. The assembly includes, for each arm of the seat occupant, a full length fabric sleeve member which is independent of any garment body, which is a part of the seat's restraint system (rather than an item of personal protective equipment), and which is shaped and dimensioned from the shoulder area to its wrist area in the form of a flexed (i.e., bent) arm. During ejection of the seat and occupant together, the sleeve member is pulled forwardly and adjacent to the occupant's sides by associated co-acting components of the assembly, such that the arm is not extended into the windblast and is protected from it. Unlike the prior art, this arm protector assembly restrains the wrist area of the seat occupant's arm near the seat ejection handle, while the arm is restrained over its entire length. As a result, the windblast load is uniformly applied, and the restrained arm is protected from injury.

Claims
Description
About| FAQs| Terms & Disclaimer| Link to Us| Contact Us