Metal working – Method of mechanical manufacture – Assembling or joining
Patent
1983-11-28
1986-08-19
Moon, Charlie T.
Metal working
Method of mechanical manufacture
Assembling or joining
29509, 29513, 29526R, 285365, 403338, 24 23B, B21D 3902
Patent
active
046061118
ABSTRACT:
An undetachable flange joint characterized in that it essentially comprises a pair of semicircular clamp halves of which cross-sectional configuration is designed to tightly fit the outer configuration of a pair of tapered flanges to be joined, said clamp halves having curled portions at their both ends, and two annular links adapted to be engaged around the respective curled end portions so that the pair of flanges are tightly joined to one another by firmly holding the whole flanges by means of the clamp halves under wedging force.
A method of manufacturing an undetachable flange joint characterized in that it is practiced by way of the steps of preparing two semicircular clamp halves having a concave cross-sectional configuration by press forming a strip of metal sheet, arranging said clamp halves opposite to one another with their one end part having an annular link hung therearound, allowing said one end part to be subjected to curling operation in such a manner as to encase the annular link in the curled end portion to joint the clamp halves at the one end thereof, mounting the pair of half assembled clamp halves around the whole flanges to be joined to one another, hanging an annular link around the other end part, and allowing the latter to be subjected to another curling operation in the same manner as described above so as to joint the clamp halves at the other end thereof.
REFERENCES:
patent: 298565 (1884-05-01), Fastenrath
patent: 421088 (1890-02-01), Tyler
patent: 494996 (1893-04-01), Dwelle
patent: 2219161 (1940-10-01), Jacobs
patent: 3231298 (1966-01-01), Tomb et al.
patent: 3499667 (1970-03-01), Pfeuffer
Akazawa Shigeaki
Okazaki Yoichiro
Mitsubishi Jokogyo Kabushiki Kaisha
Moon Charlie T.
The Yokohama Rubber Co. Ltd.
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