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US 5,332,461 AGranted
Method of making a solid wood spring blade
AssigneeStudio Huesler AG
InventorBeat Huesler
Life of this patent
Estimating the term…
Abstract
A spring blade made from solid wood layers (11, 12, 13) for seats and beds has a least one and at the most four glue layers or joints (Sa, 8b), which are approximately perpendicular to the lateral surface (5) having the greatest extension and which interconnect the individual solid wood layers. In the individual solid wood layers the annual rings in full- or semi-comb grained cut are inclined to the lateral face.
Claims11
A process for producing spring blades comprising the steps of
- forming a plurality of solid wood layers (58) each having annual rings (57) which extend in a frontal direction and approximately tangentially to major surfaces (95) of said layers,
- gluing the plurality of solid wood layers (60, 61, 62) together with the major surfaces of adjacent solid wood layers parallel and facing each other, and
- cutting the glued solid wood layers (60, 61, 62) transversely to the annual rings and perpendicular to the major surfaces of the solid wood layers to form spring blades (71) having solid wood layers of a thickness of 4 mm to 12 mm and wherein the annual rings are substantially perpendicular to the cut surfaces.
Dependencies are inferred from the claim text.