Article molded from fibrous material

US4171396A · kind A · utility

Assignee

• Werzalit Pressholzwerk J. F. Werz Jr. KG · DE

Inventors

• Edmund Munk · Oberstenfeld, DE
• Herbert Haas · Aachen, DE

Key dates

• Filing date: Dec 19, 1977
• Grant date: Oct 16, 1979
• Expiry date: Dec 19, 1997

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/253
• WIPO field: Machine tools
• WIPO sector: Mechanical engineering

Abstract

A shaped decorative article comprising a rigid body of a densified mixture of particulate material and a binder, the body having a plurality of elongated ridges projecting from the outer surface thereof which are separated from each other by valleys, whereas the inner surface of the body forms a plurality of elongated cavities respectively aligned in longitudinal direction with the ridges, each of the ridges has a pair of side faces including an angle with each other and terminating in a tip of rounded cross section constituting the edge of the respective ridge and each of the cavities having an inner end adjacent the tip of the respective ridge. The wall thickness of the body gradually increases from the tip of each ridge to the valleys adjacent thereto to reach its maximum at the center of each valley, and the density of the body gradually decreases from the tip of each ridge toward the adjacent valleys.