Land vehicles – Wheeled – Running gear
Reexamination Certificate
2007-06-15
2011-11-29
Dickson, Paul N (Department: 3616)
Land vehicles
Wheeled
Running gear
Reexamination Certificate
active
08066302
ABSTRACT:
The present invention provides a center frame designed so that a center member, legs, and a lower plate can be formed by bending metal sheets, and to provide a manufacturing method for the center frame.A pair of front legs13and a pair of rear legs14are formed by bending metal sheets so as to have substantially reverse U-shaped cross-sections. The center member10is formed by bending a metal sheet so as to have a substantially square U-shaped cross-section. The front legs13, the rear legs14, the center member10, a center front plate22, and a center rear plate23are placed on and securely weld to the lower plate18, which has an approximate X shape, in a plan view, and an isosceles trapezoidal shape in a lateral cross-section. This eliminates the need for expensive molds and makes it possible to easily manufacture the center frame from the center member, legs, and lower plate formed by bending metal sheets.
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Kimura Yasuharu
Misu Akira
Takano Yoshiyuki
Coker Robert A
Dickson Paul N
Fish & Richardson P.C.
Komatsu Ltd.
Komatsu Utility Co., Ltd.
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