POLYURETHANE CUSHION SUPPORT FOR VEHICLES
First Claim
2. In a device of the class described having a plurality of torsion springs with their opposite ends secured to corresponding support members by universally movable ball joints and lever arms connecting the spring to the corresponding support member in a manner to effect torsional actuation of the spring by relative movement of the support members in a plurality of directions, one of said support members constituting an unsprung mass disposed to be driven over a road having a straight and curved portions therein, and the other of said support members constituting a sprung mass carried by said first named support members and subjected to forCes arising from acceleration and deceleration, uneven roadbeds and from curves in the road, each said torsion spring comprising a tightly arranged multiple leaf spring having a rectangular box encasing the same at least one end, said box carrying the necessary support lever arm connections for the corresponding end of said springs, and a multiturn cushion incorporated in each of said lever arm connection to reduce the tendency for distortion of the torsion spring and to provide greater stability for the spring mass under lateral forces on curves, said multiturn cushion being constructed wholly of polyurethane based material having a durometer in excess of 45, and disposed to operate asymmetrically in both compression and shear in response to and as a function of the torsional deflection of said torsion springs.
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Accused Products
Abstract
A bouncy 70 durometer polyurethane block is employed to support a lever arm at one end of a torsion bar against twist in a vehicle mounting designed to resist outward leaning of the vehicle superstructure upon turns.
61 Citations
2 Claims
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2. In a device of the class described having a plurality of torsion springs with their opposite ends secured to corresponding support members by universally movable ball joints and lever arms connecting the spring to the corresponding support member in a manner to effect torsional actuation of the spring by relative movement of the support members in a plurality of directions, one of said support members constituting an unsprung mass disposed to be driven over a road having a straight and curved portions therein, and the other of said support members constituting a sprung mass carried by said first named support members and subjected to forCes arising from acceleration and deceleration, uneven roadbeds and from curves in the road, each said torsion spring comprising a tightly arranged multiple leaf spring having a rectangular box encasing the same at least one end, said box carrying the necessary support lever arm connections for the corresponding end of said springs, and a multiturn cushion incorporated in each of said lever arm connection to reduce the tendency for distortion of the torsion spring and to provide greater stability for the spring mass under lateral forces on curves, said multiturn cushion being constructed wholly of polyurethane based material having a durometer in excess of 45, and disposed to operate asymmetrically in both compression and shear in response to and as a function of the torsional deflection of said torsion springs.
Specification
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Current AssigneeKOLBE JOACHIM
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Original AssigneeKOLBE JOACHIM
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InventorsKOLBE JOACHIM
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Application NumberUS04/717,722Time in Patent Office1,023 DaysField of SearchUS Class Current280/124.103CPC Class CodesB60G 11/60 having both rubber springs ...B60G 21/04 mechanically
