1979-03-08
1980-10-14
Gilden, Leon
113120BB, B21D 3903
Patent
active
042274737
ABSTRACT:
A can opening device for opening cans by unfolding the can rim comprising a clamping disc, a traction disc, and a wedge disc assembled in coaxial relation about an operating axis that is to be disposed crosswise of the can side wall, in which the assembly traction disc has its periphery knurled to ride on the can rim and the wedge disc has formed about its rim a ledge that is shaped about its inner margin to define a circular working edge having a wedging rim at the side surface of the ledge, for application to the can ridge for unfolding the can end and body rims as the device rides about the can ridge. The clamping disc is formed with a smoothly contoured rim portion for clamping against the inside of the can ridge to hold the device in its operative position. The discs are rotated in the illustrated embodiments by a crank arm to actuate the device for providing a smooth camming action on the can ridge by application thereto of the circular working edge which moves its parts into unfolded relation for ready removal of the can end from the can without having to cut the can end or side wall in any way.
REFERENCES:
patent: 2119135 (1938-05-01), Link
patent: 2196182 (1940-04-01), Arnesen
patent: 2255641 (1941-09-01), Arnesen
patent: 2845887 (1958-08-01), Krodoska
patent: 3006303 (1961-10-01), Young
patent: 3366085 (1965-10-01), Young
patent: 3734043 (1973-05-01), Rosenbloom
patent: 3890912 (1975-06-01), Young
patent: 3922984 (1975-12-01), Zwideveld
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