Metal deforming – By plural tool-couples
Reexamination Certificate
2006-09-19
2006-09-19
Crane, Daniel C. (Department: 3725)
Metal deforming
By plural tool-couples
C072S446000, C072S448000, C072S455000
Reexamination Certificate
active
07107813
ABSTRACT:
A progressive pressing apparatus having multiple pressing stages, each including a gate-shaped supporting frame on which one of a plurality of die sets is detachably and adjustably disposed. The apparatus further includes rails above the pressing stages. Each supporting frame is movable along the rails, and includes a hydraulic cylinder which applies a pressing force to the corresponding die set while extending in the vertical direction. Two opposite upper end portions of each supporting frame are provided with rolling wheels which are capable of rolling along the upper surfaces of the rails. Each supporting frame includes a pair of columns. Each pair of columns is respectively provided with a pair of securing units. Each pair of securing units secures the corresponding supporting frame to a base in a state such that the rolling wheels of the corresponding supporting frame are not in contact with the rails.
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patent: 4779329 (1988-10-01), Nordquist et al.
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patent: 5473926 (1995-12-01), Futamura et al.
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patent: 5-329699 (1993-12-01), None
patent: 08-214510 (1996-08-01), None
Koishi Yuichi
Koura Norio
Aisin AW Co. Ltd.
Crane Daniel C.
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