Load limiter

Details Load limiter Load limiter

1979-09-28

1982-06-08

Reger, Duane A.

Brakes

Plastic deformation or breakage of retarder element

And subsequent reverse deformation

188 654, F16F 712

Patent

active

043335519

ABSTRACT:
A load limiter or a crash attenuation device based on wire bending principals is disclosed. Excessive tensile shocks, such as the accelerative forces imposed on a low stretch load restraint in a helicopter if it crashes, are absorbed by forcing a bifurcated double coil to successively bend and straighten as it travels through a pair of wire guides in response to the forces being transmitted into the limiter by the load restraint. The reaction force absorbed is a function of the wire diameter and stiffness while the reaction stroke is a function of the number of turns in the coil reels. The device further has an adjustment mechanism so it can easily be adapted to a wide variety of design conditions without changing the basic configuration of the limiter.

REFERENCES:
patent: 2578753 (1951-12-01), Smith
patent: 3126072 (1964-03-01), Johansson
patent: 3372773 (1968-03-01), Russo et al.

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