Plate member shearing apparatus, method for shearing plate...

Cutting – Processes

Reexamination Certificate

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Details

C083S156000, C083S345000, C083S436450, C083S674000

Reexamination Certificate

active

07032485

ABSTRACT:
A shearing apparatus (1) for shearing a plate member (2) is provided with a pair of shearing rollers (20, 20) opposed with each other. These shearing rollers (20, 20) are rotated in opposite directions in a state that the plate member (2) in pinched by and between peripheral surfaces of these shearing rollers (20,20). These shearing rollers (20, 20) are provided with at least one pair of shearing portions (21, 21) to be engaged with each other to shear the plate member (2). These shearing portions (21, 21) are formed on the peripheral surfaces and extend in an axial direction of the roller (20, 20).

REFERENCES:
patent: 5138923 (1992-08-01), Kent et al.
patent: 5669277 (1997-09-01), Perrone
patent: 6263775 (2001-07-01), Vossing et al.
patent: 43-15029 (1968-06-01), None
patent: 44-12833 (1969-06-01), None
patent: 49-56283 (1974-05-01), None
patent: 51-80081 (1976-07-01), None
patent: 128193/1977 (1977-09-01), None
patent: 31291/1979 (1979-03-01), None
patent: 7-116909 (1995-05-01), None

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