Inventors:
Michael A. Smoot - Wilmington DE, 19808
Gregory J. Gayle - Bear DE, 19701
Michael J. McGuinness - Wilmington DE, 19808
International Classification:
B41F 1310
US Classification:
101375, 492 4, 492 28, 492 49, 492 52, 492 53, 101376, 101479, 1014011, 428909
Abstract:
A bridge mandrel includes an inner sleeve assembly comprising the inner laminate and an outer laminate secured on each side of an intermediate hardened foam layer. The inner laminate is of multi-ply form with inner plies of base and adhesive layers separated from outer plies of base and adhesive layers by a compressible foam layer. The adhesive layers are made from high viscosity thermoplastic adhesive material. The intermediate layer is of segmented form with a radial gap between adjacent segments. A header is mounted to each end of the inner sleeve assembly.