Tension-torsion tie bar

Details Tension-torsion tie bar Tension-torsion tie bar

1975-09-26

1976-08-31

Gerin, Leonard H.

Machine element or mechanism

Elements

Pitmans and connecting rods

G05G 100

Patent

active

039772748

ABSTRACT:
A tie bar or flexible coupling particularly adapted to interconnect a helicopter rotor arm and a rotor blade is provided with a pair of spaced-apart end bushings connected by an endless belt which belt is defined by a plurality of spaced-apart parallel wires suitably integrated by a polyurethane adhesive. A pair of spaced-apart annular clips located between the end bushings surround the belt and draw opposite sides of the belt inwardly toward an axis extending through the end bushings about which axis the tie bar is adapted to twist under load. Opposing surfaces of each clip against which the belt sides bear are curved to form convex bearing surfaces causing the belt sides to assume a corresponding convex shape thereby deflecting the outer or edge wires less than the inner or center wires resulting in a lower tensile force imposed on the outer or edge wires than the inner or center wires during twisting motion of the belt about the axis thereof.

REFERENCES:
patent: 3362253 (1968-01-01), Ditlinger
patent: 3370483 (1968-02-01), Ditlinger
patent: 3388615 (1968-06-01), Ditlinger
patent: 3411379 (1968-11-01), Deyerling
patent: 3475988 (1969-11-01), Ditlinger et al.
patent: 3692361 (1972-09-01), Ivarsson
patent: 3782220 (1974-01-01), Ditlinger

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