Stock material or miscellaneous articles – Circular sheet or circular blank – Recording medium or carrier
Patent
1985-05-13
1986-11-25
Kittle, John E.
Stock material or miscellaneous articles
Circular sheet or circular blank
Recording medium or carrier
15180, 15181, 51364, 51376, 433134, 433147, 433166, E04F 2116
Patent
active
046248765
ABSTRACT:
A central hub for a rotatable tool which can be easily a) mounted on a polygonal seat at one end of a rotatable mandrel for rotation of the tool with the mandrel and b) subsequently removed with the tool from the seat of the mandrel. A central opening extending through the hub has a complex shape which includes a plurality of corners and a plurality of concave arcuate lines connecting the corners. The hub can be formed from a ductile preform having a generally cylindrical central opening extending through it by forcing, through the cylindrical opening in the preform, a polygonal punch having, in cross-section, substantially the same shape as, and a slightly larger size than, the polygonal cross-section of the seat of the mandrel which is to be inserted in the central opening in the hub of the tool.
REFERENCES:
patent: 64654 (1867-05-01), Floyd
patent: 315686 (1885-04-01), White
patent: 434295 (1890-08-01), Richardi
patent: 760331 (1904-05-01), Gallagher
patent: 1125153 (1915-01-01), Nielson
patent: 1837938 (1930-12-01), Young
patent: 2180120 (1937-12-01), Saltzer
patent: 2257979 (1939-12-01), Rubinstein
patent: 4055897 (1977-11-01), Brix
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