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Thermal-insulating-composite-laminate

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Thermal insulating composite laminate

Details

Inventors: Grether, Paul;
Assignee: Geilinger AG (Winterthur, CH)
Primary Examiner: Kittle; John E.
Assistant Examiner: Ryan; Patrick J.
Attorney, Agent or Firm: Kenyon & Kenyon

The composite laminate is made of two metal parts 1, 2 and a pair of thermal insulating bars of fiber reinforced synthetic material. Each metal part has a longitudinally extending groove which is provided with two rows of transversely disposed teeth which cut into the flanks of anchoring strips on the synthetic bars during pressing in of the strips in the respective grooves. The pressing in of the synthetic material into the teeth of the harder metal parts forms a strong bonded connection which resists the stresses imposed upon the laminate during use. Deformable tabs on the metal parts are used to ensure locking of the synthetic bars in place. The space required for production of the laminate is reduced essentially to the length of the metal parts.

DETAILED DESCRIPTION What is claimed is: 1.
A thermal insulating composite laminate comprising a pair of metal parts disposed in parallel spaced relation in a common plane, each said part including a longitudinally extending groove having a pair of parallel walls and a plurality of transverse teeth in each said wall perpendicular to said plane; and a bar of synthetic material of low thermal conductivity extending between said metal parts and having a pair of angled anchoring strips, each said strip extending into said groove of a respective metal part and having a plurality of teeth on each of two sides perpendicular to said plane and anchored in adhesive-free manner with said teeth on said walls of said groove.
2.
A thermal insulating composite laminate as set forth in claim 1 wherein said bar is made of a reinforced synthetic material.
3.
A thermal insulating composite laminate as set forth in claim 2 wherein said material is a fiber glass reinforced polyamide.
4.
A thermal insulating composite laminate as set forth in claim 1 wherein each metal part has an integral longitudinally extending tab deformed over a respective strip of said bar.
5.
A thermal insulating composite laminate as set forth in claim 1 wherein each groove includes a longitudinally extending recess and each strip has a longitudinally extending ridge fitted into a respective recess.
6.
A thermal insulating composite laminate as set forth in claim 1 wherein each groove includes an undercut between said teeth on at least one wall and a base of said groove.
7.
A thermal insulating composite laminate as set forth in claim 1 wherein each groove includes a longitudinally extending furrow adjacent said teeth on at least one wall.
8.
A thermal insulating composite laminate comprising a pair of metal parts disposed in parallel spaced relation, each said part including a longitudinally extending groove on each of two opposite sides having a pair of parallel walls with a plurality of transversely disposed teeth on at least one wall; and a pair of bars of synthetic material of low thermal conductivity extending in parallel spaced relation between said metal parts, each said bar having a pair of anchoring strips extending perpendicularly from opposite longitudinal edges thereof, each strip extending into a groove of a respective metal part and having a plurality of transverse teeth on at least one side anchored in adhesive-free manner with said teeth on said wall of said respective groove

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