Patent ID: 9003751
Filing Date: 2015-04-14
Classification: A01D

Abstract:
1. An improved mower of the type having a mower frame, a rotary cutting deck carried by the frame, a height of cut system for vertically moving the cutting deck upwardly and downwardly relative to the frame to adjust the height of cut of the grass, wherein the height of cut system comprises a plurality of pivotal suspension linkages connecting the cutting deck to the frame, wherein the improvement relates to the pivotal suspension linkages with each linkage comprising: a) a pivotal link that rotates about a substantially horizontal axis on the frame; b) a pivot pin pivotally carried by the pivotal link adjacent one end thereof; c) an elongated connecting rod extending through a bore in the pivot pin, wherein a lower end of the connecting rod is pivotally connected to the deck and an upper end of the connecting rod extends above the pivot pin, and wherein at least a portion of the upper end of the connecting rod is threaded; and d) a threaded adjuster engaged with the threaded upper end of the connecting rod and bearing against the pivot pin, wherein rotation of the threaded adjuster on the threaded upper end of the connecting rod varies the effective length of the connecting rod between the deck and the pivot pin of the link; wherein a top central portion of the pivot pin is recessed or cut away to form a flat, upwardly facing bearing surface in the pivot pin with an upper end of the bore being located in the upwardly facing bearing surface, and wherein the threaded adjuster comprises a hollow cylinder whose lower end is received within the recessed or cut away portion of the pivot pin to be in abutting engagement with the upwardly facing bearing surface.