Metal working – Method of mechanical manufacture – Pulley making
Reexamination Certificate
2005-03-15
2005-03-15
Jimenez, Marc (Department: 3726)
Metal working
Method of mechanical manufacture
Pulley making
C029S892000, C474S152000, C072S082000, C072S084000, C072S110000
Reexamination Certificate
active
06865808
ABSTRACT:
A pulley is made by fixing an edge of an opening of a plate by using a first upper mandrel ring installed at a lower end of a first supporting pin of a first forming device. A supporting block is disposed around an upper end of a first spindle and is rotated with the first spindle. An inner nub is formed by inwardly pressing an upper surface of the plate against a first pressing roller to reduce the thickness of the plate while drawing the plate around a first upper mandrel ring. The plate is fixed to a second spindle of a second forming device, so the plate rotates with the second spindle. An outer hub is formed by pressing a convex bead toward the inner hub by using a fourth pressing roller and by drawing the outer hub.
REFERENCES:
patent: 5904060 (1999-05-01), Kanemitsu et al.
patent: 5951422 (1999-09-01), Roes et al.
patent: 6434991 (2002-08-01), Jaschka
patent: 20010035035 (2001-11-01), Rose et al.
patent: 20010035036 (2001-11-01), Monahan et al.
Eum Tae-Hyoung
Hur Jae-Hyeon
Park Dae-Kyu
Halla Climate Control Corporation
Jimenez Marc
Lowe Hauptman & Berner LLP
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