Patent ID: 7571776

Claim:
A work apparatus comprising: a first component assembly and a second component assembly; and, an antivibration unit connecting said component assemblies to decouple vibrations between said component assemblies; said antivibration unit comprising: a leg spring having at least one wire coil extending about a coil axis; said wire coil having a peripheral direction lying in a plane perpendicular to said coil axis; said wire coil being attached to said first component assembly and said wire coil having a plurality of wire turns and extending about said coil axis; said coil axis defining an axial direction; said first component assembly and said second component assembly being movable relative to each other in said peripheral direction of said wire coil and in said axial direction; said leg spring having a tangential direction extending perpendicular to said axial direction in a plane arranged approximately perpendicularly to said coil axis; said leg spring further having a first wire leg projecting outwardly from said wire coil referred to said coil axis and projecting in said tangential direction and said first wire leg extending in said plane arranged approximately perpendicularly to said coil axis; said first wire leg having an end portion attached to said second component assembly so as to cause said leg spring to be subjected to a load in the manner of a flexural bar during operation of said work apparatus so as to permit a vibration-caused relative displacement of said first and second component assemblies in said peripheral direction to be transmitted via said first wire leg to said wire turns and thereby load said wire turns in said peripheral direction to said wire coil; a guide for holding at least a segment of said first wire leg; and, said guide not blocking said first wire leg in said peripheral direction of said wire coil and said guide holding said first wire leg against movement in said axial direction so that vibration loads in said axial direction and in said peripheral direction are absorbed essentially independently of each other with said vibration loads in said axial direction being absorbed essentially by said first wire leg between said guide and the location of the introduction of force and said vibration loads in said peripheral direction being taken up essentially by said wire coil.