1975-04-08
1976-08-31
Larson, Lowell A.
113 18C, 113 30, 113120K, 113120Y, B21D 5126, B21D 5134
Patent
active
039773400
ABSTRACT:
In a can one end of which is closed by a diaphragm the diaphragm is positioned against a peripherally extending flattened bead which is formed in the can body and extends into the body and the diaphragm is clinched against the flattened bead by overturning and inturning of the portion of the body which extends from the flattened bead to the mouth of the body.
REFERENCES:
patent: 277920 (1883-05-01), Norton
patent: 388288 (1888-08-01), Knapp
patent: 388289 (1888-08-01), Knapp
patent: 941085 (1909-11-01), Marthinson
patent: 1590754 (1926-06-01), Hulbert
patent: 1803616 (1931-05-01), Hothersall
patent: 2578731 (1951-12-01), Nordquist et al.
patent: 2700355 (1955-01-01), Erb
Combs E. M.
Larson Lowell A.
Metal Box Limited
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