IP Library Granted Patent US 7,854,291
Granted Patent B2
US 7,854,291 · App. 12/095,027 · Granted Dec 21, 2010

Work machine

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Quick Facts
Patent No.
US 7,854,291
App. No.
12/095,027
Granted
Dec 21, 2010
Kind
B2
Abstract

In a work machine equipped with a switchover means enabling selective operation of traveling devices and a work device by means of common operating levers, switchover can easily be performed and also easily recognized. In a work machine having traveling devices and a work device, operating levers that are capable of operating the traveling devices and the work device are respectively disposed at the sides of an operating seat. A foot switch connected to a controller is disposed in the proximity of and operable with a foot of an operator seated at the operating seat. While the foot switch is being operated with the foot, the traveling devices are operated by the operating levers through the controller. While the foot switch is not being operated, the work device is operated by means of the operating levers through the controller.

Claims (10)

1. A work machine having a traveling device and a work device, comprising:

an operating seat;

an operating lever disposed at a side of the operating seat and able to operate the traveling device and the work device;

a foot-operated switchover means disposed in the proximity of and operable with a foot of an operator seated at the operating seat; and

a controller adapted to enable travel operation of the traveling device to be performed only by the operating lever while the foot-operated switchover means is depressed, and enable the work device to be operated by the operating lever while the foot-operated switchover means is not depressed.

2. The work machine in accordance with claim 1 , further comprising:

a traveling alarm adapted to be activated when the foot-operated switchover means is depressed with the foot.

3. The work machine in accordance with claim 1 , further comprising:

a traveling pedal adapted to be depressed with a foot of the operator seated at the operating seat; and

a warning alarm adapted to be activated when the traveling pedal and the foot-operated switchover means are simultaneously depressed with the foot.

Assignments (3)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Apr 14, 2010
From: CATERPILLAR JAPAN LTD.
To: CATERPILLAR S.A.R.L.
Reel/Frame 024235/0446 →
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 May 27, 2008
From: AKAHANE, EIJI; TOYOURA, NOBUMI; KOJIMA, SHIGERU; TAKANO, MASAYUKI
To: SHIN CATERPILLAR MITSUBISHI LTD.
Reel/Frame 021001/0218 →