×

Lawn mower having independent drive wheel suspension

  • US 6,170,242 B1
  • Filed: 07/21/1998
  • Issued: 01/09/2001
  • Est. Priority Date: 07/22/1997
  • Status: Expired due to Term
First Claim
Patent Images

1. A lawn mower, comprising:

  • a chassis having a front end and a rear end;

    a prime mover mounted on the chassis;

    a cutter deck supported from the chassis;

    front wheels attached to the front end of the chassis;

    two drive wheel assemblies on opposing sides of the rear end of the chassis, each drive wheel assembly connected to the chassis by at least one link pivotable with respect to the chassis and the drive wheel assembly;

    a spring associated with each drive wheel assembly and positioned to bias the drive wheel assemblies in a downward direction;

    wherein the drive wheels and front wheels support the chassis for movement over a surface;

    each drive wheel assembly comprising a drive wheel rotated by means of the prime mover; and

    wherein each drive wheel assembly moves vertically up and down relative to the chassis, respectively against and with force exerted by the spring, independently of movement of the opposing drive wheel assembly.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×