Joints and connections – Member deformed in situ – Inner member is expanded by longitudinally inserted element
Patent
1987-08-27
1990-04-10
Kundrat, Andrew V.
Joints and connections
Member deformed in situ
Inner member is expanded by longitudinally inserted element
403248, 403 5, B25G 328
Patent
active
049155377
ABSTRACT:
Disclosed herein is a compound joint in which a lower section and an upper section are mated along a common contact plane. Means for positively interlocking the sections are provided in each section. A depressed area on the surface of each of the sections is oriented along the common contact plane, such that when the sections are interlocked, the depressed areas form an enclosed tube. A spreader tube comprising a metal that undergoes cold work hardening during expansion can be positioned within the enclosed tube, whereby the expansion of the spreader tube within the enclosed tube to a volume larger than the volume of the enclosed tube causes said interlocked sections to be permanently jointed.
REFERENCES:
patent: 2644553 (1953-07-01), Cushman
patent: 2754573 (1956-07-01), Schoessow
patent: 3160249 (1964-12-01), Pavlecka
patent: 3363386 (1968-01-01), Elflein et al.
patent: 3771277 (1973-11-01), Rausch et al.
patent: 3780481 (1973-12-01), Tomkins
patent: 4389589 (1983-06-01), Schustek
patent: 4532747 (1985-08-01), Koetje
patent: 4722633 (1988-02-01), Bergheim et al.
Bergheim Hans
Griep Winfried
Kundrat Andrew V.
Vereinigte Aluminum-Werke A.G.
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