Tractor frame and method of manufacture therefor

Details Tractor frame and method of manufacture therefor Tractor frame and method of manufacture therefor

2006-05-02

2006-05-02

Dickson, Paul N. (Department: 3616)

Motor vehicles

Frame

C280S781000

Reexamination Certificate

active

07036622

ABSTRACT:
A tractor frame comprises a pair of left and right cranked side frame elements disposed in parallel. Each of the cranked side frame elements includes a web portion at a longitudinally intermediate portion of the cranked side frame elements, a front level portion extended forward from the web portion, and a rear level portion extended backward from the web portion so that a top of the rear level portion is lower than a top of the front level portion. A footboard is provided on the top of the rear level portion.

REFERENCES:
patent: 2173525 (1939-09-01), Wallace
patent: 2794650 (1957-06-01), Schilberg
patent: 4264264 (1981-04-01), McMillan et al.
patent: 4369559 (1983-01-01), Phillips
patent: 4496187 (1985-01-01), Pontecorvo
patent: 4737067 (1988-04-01), Samejima et al.
patent: 4755101 (1988-07-01), Hamada et al.
patent: 5123805 (1992-06-01), Ishimori et al.
patent: 5248237 (1993-09-01), Nakamura
patent: 6237957 (2001-05-01), Takekata et al.
patent: 57-15768 (1982-01-01), None

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