Patent ID: 7703268
Filing Date: 2010-04-27
Classification: A01D,Y10T

Abstract:
1. A rotary mowing implement, comprising: a rotary cutter bar disk; at least one hub connected to said rotary cutter bar disk; a blade element having a hole therein; a coupling pin coupling said blade element to said hub, said coupling pin being insertable through said hole and being removably coupled to said hub; and a biased pin retaining mechanism coupling said coupling pin to said hub said pin retaining mechanism having at least a first biased pin and a second biased pin, said first biased pin and said second biased pin being substantially similar, each being biased by separate springs, said first biased pin and said second biased pin each having a longitudinal axis that is substantially perpendicular to a longitudinal axis of said coupling pin each having a coupling feature, and each biased pin interacting with said coupling feature to retain said coupling pin to said hub, with each biased pin including a first surface having a first dimension from said longitudinal axis and a second surface having a second dimension from said longitudinal axis, said first dimension being smaller than said second dimension, said second dimension being such that said second surface interacts with said coupling feature to retain said coupling pin to said hub, said first dimension being such that said first surface when proximate to said coupling feature does not interact with said coupling feature allowing said coupling pin to be disengaged from said hub.