IP Library Granted Patent US 6,905,139
Granted Patent B2
US 6,905,139 · App. 10/297,831 · Granted Jun 14, 2005

Construction equipment machine

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Quick Facts
Patent No.
US 6,905,139
App. No.
10/297,831
Granted
Jun 14, 2005
Kind
B2
Abstract

The present invention relates to a construction machine in which a superstructure is rotatably mounted on an undercarriage, and is made up of an undercarriage ( 101 ) having a hollow frame ( 104 ), a superstructure ( 102 ) mounted on the undercarriage ( 101 ) and a fuel tank ( 1 ) formed as one with the hollow frame ( 104 ) in a state where a portion of an internal space of the hollow frame ( 104 ) is defined as a compartment by partitions ( 2 ), with an internal surface of the fuel tank ( 1 ) being covered with a resin film ( 3 ) in a liquid-tight condition.

Claims (7)

1. A construction machine comprising:

an undercarriage including a swing circle, a pair of truck frames and a hollow frame, the undercarriage having at least two plates interconnecting each of said truck frames and the plates defining a hollow space between the plates;

a superstructure rotatably mounted on said swing circle of said undercarriage; and

a fuel tank, for storing fuel, being formed in such a manner that the hollow space in said hollow frame is enclosed by partitions, said fuel tank comprising an internal surface covered with a resin film in a liquid-tight condition, and

wherein the space between the plates is divided into at least two sections by at least one side wall, said at least one side wall having at least one hole for transfer of fuel.

2. A construction machine according to claim 1 , wherein said resin film is formed with a thermoplastic resin by rotational molding.

3. A construction machine according to claim 1 , said at least one side wall further comprising a plurality of walls, at least one of said walls being a side wall of said swing circle.

Assignments (3)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Apr 14, 2010
From: CATERPILLAR JAPAN LTD.
To: CATERPILLAR S.A.R.L.
Reel/Frame 024233/0895 →
CHANGE OF NAME Recorded Sep 17, 2008
From: SHIN CATERPILLAR MITSUBISHI LTD.
To: CATERPILLAR JAPAN LTD.
Reel/Frame 021531/0563 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Dec 11, 2002
From: AKAHANE, EIJI; SAKAI, MAKOTO
To: SHIN CATERPILLAR MITSUBISHI LTD.
Reel/Frame 014020/0011 →