Cutter blade assembly
AssigneeMassey-Ferguson Inc.
InventorJack Howard Rose
Life of this patent
Estimating the term…
Abstract
Two blades of the cutter blade assembly are pivotally mounted separately by means of a coupler on opposite sides of a drive shaft and move to an extended position by centrifugal force. Upon one blade striking an inseverable object both blades are caused to move to a retracted position. In moving from the extended position to the retracted position the impacted blade coacts with the opposite blade to move the latter to a retracted position.
Claims9
A lawn mower cutter blade assembly having a plurality of cutter blades movable between extended and retracted position, drive means including a shaft, means for pivotally mounting said blades on said drive means, and each blade pivoting about a separate axis radially outwardly from said shaft, the improvement comprising, means for coacting between said blades upon the striking of an unseverable object by one of said blades, and said coacting means being spaced radially outwardly of said means for pivotally mounting said blades.
Dependencies are inferred from the claim text.