Tongue and groove structure in preformed wall sections

Details Tongue and groove structure in preformed wall sections Tongue and groove structure in preformed wall sections

1978-03-31

1979-08-21

Bell, J. Karl

Static structures (e.g., buildings)

Opaque stonelike module

Lateral retaining feature on facing sheet

52785, E04C 110

Patent

active

041648323

ABSTRACT:
Preformed wall sections having two spaced outer panels with interfitting tongue and groove structure disposed in opposite edges adjacent an outer panel are improved by construction of the tongue and groove to relieve the tendency to chip or damage the panel portion adjacent the groove if the panels are slightly misaligned when mating. Both the tongue and the groove structure is modified for achieving this improvement. The tongue is tapered away from the outer panel to form a wedge shaped portion for entering the groove. The groove has a strengthening member on the inner surface of the outer panel preferably comprising a layer of glue commonly used to glue a separating member to the outer panel but extending outwardly within the groove toward the edge of the panel.

REFERENCES:
patent: 3186130 (1965-06-01), Gray
patent: 3292321 (1966-12-01), Vander Schans
patent: 3488904 (1970-01-01), Schneller et al.

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