The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 29, 2011
Filed:
Jun. 15, 2007
Yoshiyuki Takano, Saitama, JP;
Yasuharu Kimura, Saitama, JP;
Akira Misu, Saitama, JP;
Komatsu Ltd., Tokyo, JP;
Komatsu Utility Co., Ltd., Tokyo, JP;
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 legsand a pair of rear legsare formed by bending metal sheets so as to have substantially reverse U-shaped cross-sections. The center memberis formed by bending a metal sheet so as to have a substantially square U-shaped cross-section. The front legs, the rear legs, the center member, a center front plate, and a center rear plateare placed on and securely weld to the lower plate, 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.