Stock material or miscellaneous articles – Structurally defined web or sheet – Including variation in thickness
Patent
1983-03-01
1984-05-01
Thibodeau, Paul J.
Stock material or miscellaneous articles
Structurally defined web or sheet
Including variation in thickness
428174, 428179, 428180, 428212, 428426, B32B 330, B32B 326
Patent
active
044461909
ABSTRACT:
A ceramic tile has its rear uniformly configured as small frusto-conical or frusto-pyramidal tapered projections 2 of constant height, thus eliminating internal stresses during firing, eliminating zones of different color tone on the front face, and improving the gripping coefficient when laying.
A portion of the projections 2, in groups of at least two, are taller to form feet 3 for resting during stacking.
REFERENCES:
patent: 3018015 (1962-01-01), Agriss et al.
patent: 4146666 (1979-03-01), Houtlosser
C.I.E.F. -Compagnia Immobiliare e Finanziaria S.p.A.
Thibodeau Paul J.
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