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A composite spring comprising coaxially coiled sheet in which filamentary materials spiral about a first rotational axis of the spring in performed resinous convolutes. A method of fabricating a coaxial composite spring having filamentary materials that spiral about a first rotational axis of the sp

A composite spring comprising coaxially coiled sheet in which filamentary materials spiral about a first rotational axis of the spring in performed resinous convolutes. A method of fabricating a coaxial composite spring having filamentary materials that spiral about a first rotational axis of the spring in preformed resinous convolutes comprising wrapping a plurality of sheets including a release sheet about a mandrel wherein the sheets comprise the filamentary materials and hardenable resin.

대표청구항 ▼

A method of fabricating a coaxial composite spring having filamentary materials that spiral about a first rotational axis of said spring in a sheet of preformed resinous convolutes, said sheet being coilable about a second axis, parallel to said first axis, for energizing said spring, said method co

A method of fabricating a coaxial composite spring having filamentary materials that spiral about a first rotational axis of said spring in a sheet of preformed resinous convolutes, said sheet being coilable about a second axis, parallel to said first axis, for energizing said spring, said method comprising: providing a plurality of spooled sheets wherein a first of said sheets comprises hardenable resin and filamentary materials disposed angularly to a first sheet first axis in the plane of said first sheet and a second of said sheets is releasable from the hardened product of said hardenable resin; fixing said first and second sheets relative to a precursor axis that becomes said first rotational axis after hardening of said hardenable resin such that an end portion of said first sheet adjacent said precursor axis is juxtaposed an end portion of said second sheet either atop the other with said first sheet first axis being parallel to said precursor axis; causing remainder portions of said first and second sheets remotely located from said end portions and away from said precursor axis to unwind and wrap together on themselves under tension about said precursor axis such that a first sheet second axis in the plane of said first sheet and normal to said first sheet first axis sprials around said precursor axis substantially in a plane that is normal thereto; and hardening said resin in the so wrapped sheets to provide said spring.