IP Library Granted Patent US 7,857,086
Granted Patent B2
US 7,857,086 · App. 12/284,059 · Granted Dec 28, 2010

Working vehicle

Assignee: Yanmar Co., Ltd.
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Quick Facts
Patent No.
US 7,857,086
App. No.
12/284,059
Granted
Dec 28, 2010
Kind
B2
Abstract

A working vehicle in accordance with the present invention is provided with an engine mounted on a front portion of a vehicle body frame constructing a traveling vehicle body, a backhoe arranged on a rear portion of the vehicle body frame, a mower device arranged below the vehicle frame, a seating detecting means detecting a seating of an operator in a control seat on the traveling vehicle body, an engine stop mechanism stopping the engine, and a shift control means for controlling so as to increase and decrease forward and backward moving speeds of the traveling vehicle body. Further, in consideration for a safety at a time of an excavating work by the backhoe, the structure is made such that the engine stop mechanism is actuated at a time of operating the shift control means in the case that the seating detecting means is in an on state, and the seating detecting means is retained to the on state regardless of the seating of an operator in the case that the control seat is directed backward.

Claims (12)

1. A working vehicle comprising:

an engine mounted on a front portion of a vehicle body frame constructing a traveling vehicle body;

a backhoe mounted on a rear portion of the vehicle body frame;

a seating detecting means detecting a seating of an operator in a control seat on the traveling vehicle body;

an engine stop mechanism stopping the engine; and

a shift operating means for controlling so as to increase and decrease forward and backward moving speeds of the traveling vehicle body,

wherein the engine stop mechanism is actuated at a time of operating the shift control means in the case that the seating detecting means is in an on state, and the seating detecting means is retained to the on state regardless of the seating of an operator in the case that the control seat is directed backward.

2. The working vehicle according to claim 1 , further comprising:

a mower device arranged below the vehicle body frame; and

a PTO operating means for operating an on and off of a power transmission to the mower device,

wherein the engine stop mechanism is activated at a time of turning on the PTO operating means in the case that that the seating detecting means is in an on state.

3. The working vehicle according to claim 1 or 2 , wherein the seating detecting means is a contact type limit switch arranged below the control seat, and the control seat is structured such as to be retained at a height position which is not allowed to come into contact with the seating detecting means in a backward-looking state.

Assignments (2)
CHANGE OF NAME Recorded Aug 26, 2020
From: YANMAR CO., LTD.
To: YANMAR POWER TECHNOLOGY CO., LTD.
Reel/Frame 054162/0112 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Dec 1, 2008
From: WAKUTA, KENSAKU; MIYAMOTO, KAZUHIKO; HANAFUSA, MASAHIRO; SHIBAOKA, JUNKO
To: YANMAR CO., LTD.
Reel/Frame 021917/0058 →
Continuity (2)
Continuation In Part 1221495600 · Jun 24, 2008
Related Publication 20090313862A1 · Dec 24, 2009