Patent ID: 6026635
Filing Date: 2000-02-22
Classification: A01D

Abstract:
Mowing mechanism for a lawn mower comprising:a housing including a lower edge open to the ground, a discharge channel (38) for discharging air and cuttings from said housing, and an air return channel (40) in communication with said housing and said discharge channel (38), said return channel adapted for returning discharged air from said discharge channel back into said housing,at least two blade disks (18, 20), provided within the housing (10) side-by-side with reference to the forward direction of mowing (12), each blade disk having a lower side, an upper side, and an outer circumference,respective pairs of cutting blades (22, 24) of similar design mounted on opposite sides of said blade disk and close to the circumference of said blade disk, extending outwards from and essentially parallel to said blade disk (18, 20), wherein each blade pair is comprised of a lower blade (24) mounted on the lower side of the blade disk (18, 20) and an upper blade (22) mounted on the upper side of the blade disk (18, 20),wherein the areas of coverage of the cutting blades (22, 24) of the two blade disks (18, 20) overlap each other, wherein the blade disks (18, 20) are driven synchronized counter-rotationally, wherein the two blade disks (18, 20) are driven so that the direction of rotation (28, 30) of the two blade disks (18, 20) is reversible, and wherein the cutting blades (22, 24) of the two cutting disks (18, 20) are angularly offset with respect to each other.