Modified dovetail joint

Details Modified dovetail joint Modified dovetail joint

1977-04-12

1981-02-10

Braun, Leslie

Static structures (e.g., buildings)

Opaque stonelike module

Lateral retaining feature on facing sheet

52642, 52729, 403381, E04C 110, E04C 330

Patent

active

042493552

ABSTRACT:
A modified dovetail joint interconnects a plywood web to a chord. The chord carries two grooves extending inwardly from the surface of the chord intersected by the web. The two grooves merge into a single, wider groove adjacent the surface of the chord, are separated by a wedge-shaped spacer, and are inclined relative to each other. The plywood web carries two flexible tongues along its edge portion that are sized to engage respective ones of the grooves in the chord. The tongues are composed, at least in part, of two of the veneer layers of the plywood and are spaced from each other by a web groove formed in an intervening layer of veneer. The inner terminus of the web groove as well as the terminus of the glue laminate between the tongue forming layers of veneer and the adjacent intervening layer both lie below the surface of the chord when the web and the chord are assembled.

REFERENCES:
patent: 710389 (1902-09-01), Wright
patent: 2981669 (1961-04-01), Brand et al.
patent: 3791082 (1974-02-01), Bowling
patent: 3960637 (1976-06-01), Ostrow
patent: 3991535 (1976-11-01), Keller et al.
patent: 4191000 (1980-03-01), Henderson

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