Motion restraining device

In a motion-restraining device for dissipating at a controlled rate the force of a body moving unidirectionally, the improvement comprising:

• force dissipating means for dissipating rotary motion including:
• A. a crankshaft adapted to be driven in unidirectional rotation and having an angularly related crank arm,
• B. a mass supported for oscillatory motion about a fixed axis of rotation,
• C. an elongated pitman link having one end pivotally connected to said crank arm, and
• D. energy dissipating means interconnecting the opposite end of said link with said mass including means defining in said link an elongated slot, the opposite ends of which are defined by a pair of impact surfaces, a shuttle seated in said slot and supported thereby for rectilinear motion between said impact surfaces including a pair of opposite end surfaces of a truncated, curved configuration, the radii of curvature for said end surfaces being extended from points spaced at equidistances from the opposite end of the shuttle along an axis of symmetry therefor and the planes of truncation for said end surfaces being extended orthogonally with respect to said axis, and means for pivotally connecting said shuttle to said mass.