US 2008/0289168 A1 · Mower suspension system and method

Abstract

In some embodiments, the present invention provides a mower including a frame having a front portion and a rear portion, at least one front wheel coupled to the front portion of the frame, and two drive wheels on substantially opposite sides of the rear portion of the frame. Each drive wheel is coupled to the frame by a first link pivotably coupled at one end to the front portion of the frame and at an opposite end to the drive wheel, and a second link pivotably coupled at one end to the rear portion of the frame and at an opposite end to the drive wheel. The mower also includes at least one spring positioned to bias the drive wheels in a downward direction. Each of the drive wheels are movable upward and downward relative to the frame.

Claims8

Dependent claims

A method of assembling a mower, the method comprising:

providing a frame having a first end, a second end, and opposite sides, the frame defining a longitudinal axis from the first end to the second end;
positioning at least one wheel toward the first end of the frame;
positioning at least two additional wheels on the opposite sides of the frame, respectively, toward the second end of the frame;
pivotably coupling each of the at least two additional wheels to a portion of the frame disposed closer to the first end of the frame than the second end with a first link;
and
pivotably coupling each of the at least two additional wheels to a portion of the frame disposed closer to the second end of the frame than the first end with a second link.

3 more elements

Dependencies are inferred from the claim text.

Facts

Application

12/154,220Filed 20 May 2008

Priority

26 Jul 1996

Published

27 Nov 2008

Term ends

Not estimatedThe source records don’t support an estimate.

Classification26 codes

A01D 34/64
Having cutters rotating about a vertical axis: mounted on a vehicle, e.g. a tractor, or drawn by an animal or a vehicle
A01D 34/661
With two or more cutters: mounting means
B60B 33/0005
Assembling to the object, e.g. furniture: characterised by mounting method
B60B 33/0021
Characterised by adaptations made to castor: in the form of a mounting pin

Family

Application60/022,865Us provisional application · filed 26 Jul 1996

Application60/053,403Us provisional application · filed 22 Jul 1997

Application08/898,801Continuation in part · filed 23 Jul 1997

Application60/063,362Us provisional application · filed 28 Oct 1997

Application09/119,818Continuation in part · filed 21 Jul 1998

Application09/144,499Continuation in part · filed 31 Aug 1998

Application09/359,537Continuation in part · filed 22 Jul 1999

Application09/384,534Continuation · filed 27 Aug 1999

Application09/879,800Continuation in part · filed 12 Jun 2001

Application10/285,350Continuation in part · filed 31 Oct 2002

Application10/903,456Division · filed 30 Jul 2004