Attachment of rings to articles

Details Attachment of rings to articles Attachment of rings to articles

1982-12-15

1986-04-29

Lesmes, George F.

Receptacles

Outlet or junction box type

Sectional receptacle

220 73, 220288, 220414, 428 36, 428156, 428168, 428172, B32B 102, B32B 108

Patent

active

045851360

ABSTRACT:
Attachment of a ring, particularly a metal ring (2), to an article which has walls or skirts (1) of fibre-reinforced resin material. The ring has a plurality of external grooves (3, 4, 5, 6). The skirt comprises, for each groove in sequence, a first (32, 36, 37, 40) and second (33, 38, 39, 41) layer of fibre-reinforced resin material. The fibres in the first layer have a substantial orientation in directions parallel with the axis of the ring and extend from the skirt into the respective grooves. Overlying the first layer is a second layer comprising hoop windings from the skirt towards the groove. The second layer lies at least partly in the groove to lock the first layer in the groove. This layering is repeated for each groove and finally successive hoop windings (45, 46, 47, 48) are wound over the entire article. This is useful for attaching end rings to rocket motor cases or for attaching rings to pressure vessels to define an aperture.

REFERENCES:
patent: 3073475 (1963-01-01), Fingerhut
patent: 3074585 (1963-01-01), Koontz
patent: 3124001 (1964-03-01), Conley

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