Hollow floor

US5572842A · kind A · utility

Assignee

• Firma Carl Freudenberg · DE

Inventors

• Reinhard Stief · Weinheim, DE
• Manfred Wagner · Triftern, DE
• Hans Heckmann · Karlsruhe, DE

Key dates

• Filing date: Jun 27, 1995
• Grant date: Nov 12, 1996
• Expiry date: Jun 27, 2015

Classification

• Technology area (CPC E): Fixed Constructions
• CPC primary: E04F15/02429
• WIPO field: Civil engineering
• WIPO sector: Other fields

Abstract

A hollow floor composed of a profiled false floor (1) which is arranged between a top floor (2) and a sub floor (3) and is designed to be plate-shaped, the false floor (1) having cup-shaped depressions (4) that are joined together by essentially flat edge areas (5). The depressions (4) are filled in with a sound-deadening filler material (6).