Lawn tractor with jack-up mechanism
First Claim
1. A lawn tractor comprising:
- a vehicle body extending in a fore and aft direction with respect to a traveling direction;
a first wheel unit having a pair of front wheels provided right and left with respect to the traveling direction;
a second wheel unit having a plurality of rear wheels;
a mower unit connected to said vehicle body between said first and second wheel units;
a wheel support frame supporting said first wheel unit and connected to said vehicle body, said wheel support frame pivotal about a longitudinal axis extending in the fore and aft direction, wherein said wheel support frame and said first wheel unit are pivotally displaceable about the longitudinal axis relative to said vehicle body to switch over said vehicle body from a running posture to a jack-up posture, with said second wheel unit and one of said pair of front wheels of said first wheel unit contacting the ground, and with said one front wheel acting as a reaction point on the ground to switch over said vehicle body from the running posture to the jack-up posture, and wherein, in said jack-up posture, said vehicle body is lifted up from the ground about a wheel axis of said second wheel unit, the other front wheel is lifted up from the ground, and a space for servicing said mower unit is defined between said mower unit and the ground; and
a jack device for swinging said wheel support frame to produce said running posture and said jack-up posture.
1 Assignment
0 Petitions
Accused Products
Abstract
A mid-mount type lawn tractor having idle wheels disposed at one end in a fore and aft direction of a vehicle body, drive wheels disposed at the other end in the fore and aft direction of the vehicle body, a mower unit connected to the vehicle body between the idle wheels and drive wheels. The lawn tractor includes a wheel support frame supporting the idle wheels and pivotably connected to the vehicle body. A pivotal movement of the wheel support frame relative to the vehicle body displaces the idle wheels relative to the vehicle body, to produce a running posture or a jack-up posture lifting at least part of the vehicle body. The pivotal movement of the wheel support frame is caused by a jack device.
56 Citations
13 Claims
-
1. A lawn tractor comprising:
-
a vehicle body extending in a fore and aft direction with respect to a traveling direction;
a first wheel unit having a pair of front wheels provided right and left with respect to the traveling direction;
a second wheel unit having a plurality of rear wheels;
a mower unit connected to said vehicle body between said first and second wheel units;
a wheel support frame supporting said first wheel unit and connected to said vehicle body, said wheel support frame pivotal about a longitudinal axis extending in the fore and aft direction, wherein said wheel support frame and said first wheel unit are pivotally displaceable about the longitudinal axis relative to said vehicle body to switch over said vehicle body from a running posture to a jack-up posture, with said second wheel unit and one of said pair of front wheels of said first wheel unit contacting the ground, and with said one front wheel acting as a reaction point on the ground to switch over said vehicle body from the running posture to the jack-up posture, and wherein, in said jack-up posture, said vehicle body is lifted up from the ground about a wheel axis of said second wheel unit, the other front wheel is lifted up from the ground, and a space for servicing said mower unit is defined between said mower unit and the ground; and
a jack device for swinging said wheel support frame to produce said running posture and said jack-up posture. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
-
-
11. A lawn tractor comprising:
-
a vehicle body extending fore and aft with respect to a traveling direction;
a first wheel unit disposed at one end in a fore and aft direction of said vehicle body;
a second wheel unit disposed at the other end in the fore and aft direction of said vehicle body;
a mower unit connected to said vehicle body between said first and second wheel units;
a wheel support frame supporting said first wheel unit and pivotally connected to said vehicle body, with the first wheel unit pivotally displaceable relative to said vehicle body between a running posture and a rotated, static jack-up posture in which the vehicle body is lifted up from the ground about a wheel axis of said second wheel unit and a space for servicing said mower unit is defined between said mower unit and the ground; and
a jack device for swinging said first wheel unit to produce said running posture and said jack-up posture, wherein said wheel support frame is pivotal about a longitudinal axis extending in the fore and aft direction of the vehicle body to move the wheel support frame between the running posture and the rotated, static jack-up posture. - View Dependent Claims (12, 13)
-
Specification