Patent ID: 8056306
Filing Date: 2011-11-15
Classification: A01D

Abstract:
1. A mower comprising: a mower housing having a mower deck extending in a horizontal direction, the mower deck having a grass cutting room defined therein; a first shaft extending in a vertical direction, the first shaft having an upper end and a lower end, the lower end of the first shaft extending through the mower deck and facing the grass cutting room; a first blade connected to the lower end of the first shaft and rotated in unison with the first shaft; a second shaft extending in the vertical direction, the second shaft having an upper end and a lower end, the lower end of the second shaft extending through the mower deck and facing the grass cutting room; a second blade connected to the lower end of the second shaft and rotated in unison with the second shaft; a first cylindrical shaft casing substantially enclosing the first shaft and pivotally supporting the first shaft, the first cylindrical shaft casing including: a second cylindrical shaft casing substantially enclosing the second shaft and pivotally supporting the second shaft, the second cylindrical shaft casing including: a connecting casing interconnecting the upper casing portion of the first cylindrical shaft casing and the upper casing portion of the second cylindrical shaft casing; and a power train enclosed by the connecting casing and transmitting power to the first shaft and the second shaft, the power train including a first output gear transmitting the power to the first shaft and a second output gear transmitting the power to the second shaft, the first output gear being mounted on the first shaft at the upper end of the first shaft, and the second output gear being mounted on the second shaft at the upper end of the second shaft; wherein the first cylindrical shaft casing has said upper casing portion enclosing the first output gear, the first cylindrical shaft casing further including an orifice portion extending between and having a smaller diameter than the upper casing portion and the lower casing portion of the first cylindrical shaft casing; and the second cylindrical shaft casing has said upper casing portion enclosing the second output gear, the second cylindrical shaft casing further including an orifice portion extending between and having a smaller diameter than the upper casing portion and the lower casing portion of the second cylindrical shaft casing; and wherein the first cylindrical shaft casing, the connecting casing, and the second cylindrical shaft casing constitute a gate-shaped structure on the mower deck such that a space is defined between the connecting casing and the mower deck.