Gritless seal

Details Gritless seal Gritless seal

1977-10-11

1979-08-28

Shedd, Wayne L.

Joints and connections

Member deformed in situ

Both members deformed

403313, 403393, 403396, 339276R, B25G 328, F16G 1100

Patent

active

041659430

ABSTRACT:
A gritless seal, a method for making the seal, and a method for forming a joint with the seal between overlapped ligature segments is provided. The inner gripping layer is brittle and has a hardness greater than that of the outer, ductile layer. In forming the joint, the seal is disposed about the overlapped ligature segments and is folded, squeezed, and/or crimped about the segments under pressure sufficient to deform the outer, ductile layer and produce fracture cracks in the inner gripping layer which present sharp edges to engage and hold the surfaces of the overlapping ligature segments. The interior of the sheet steel seal is case hardened by known cyaniding techniques.

REFERENCES:
patent: 1283062 (1918-10-01), Brooks
patent: 1936186 (1933-11-01), Brenizer
patent: 2269285 (1942-01-01), Ott
patent: 2279677 (1942-04-01), Heinrich
patent: 2604508 (1952-07-01), Bergan

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