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US 2002/0153190 A1Published application
Tractor frame and method of manufacture therefor
OwnerKoji Iwakiinventor
Life of this patent
Estimating the term…
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.
Claims14
A tractor frame, comprising:
- a pair of left and right cranked side frame elements disposed parallel to each other, each of said cranked side frame elements including a web portion at a longitudinally intermediate portion of said cranked side frame elements,
- a front level portion extending forward from said web portion, and
- a rear level portion extending backward from said web portion so that a top of said rear level portion is lower than a top of said front level portion, wherein a footboard is provided on the top of said rear level portion;
- and
- a cross member interposed between said web portions of both said cranked side frame members so as to connect both said cranked side frame members.
2 more elements
A method of producing a tractor frame, comprising the steps of:
- producing a front frame member including a pair of parallel left and right side portions;
- producing a rear frame member including a pair of parallel left and right side portions;
- joining rear bottom edges of said side portions of said front frame member to front top edges of said side portions of said rear frame member, thereby constituting left and right cranked side frame elements of a tractor frame;
- and,
- interposing a cross member between vertically overlapping portions of said front and rear frame members so as to connect said left and right cranked side frame elements to each other.
2 more elements
Dependencies are inferred from the claim text.