Patent ID: 7219488

Claim:
A mounting apparatus for mounting onto and controlling a string trimmer on a lawn mower, the string trimmer comprising a string trimmer head affixed at a first end of a shaft, the mounting apparatus comprising: a. a lower mounting shock assembly, comprising at least one forward vertically disposed spring and at least one rearward vertically disposed spring, each said at least one forward and at least one rearward spring comprising a top end and a bottom end, a top bracket restraining the top ends and a bottom bracket restraining the bottom ends of the at least one forward and the at least one rearward springs, the bottom bracket further adapted to connect to a desired position on said lawn mower, an adjustable fastener adjustably fastening the top bracket with the bottom bracket and providing for height adjustment of each said at least one forward and at least one rearward spring, the lower mounting shock assembly additionally comprising a first bearing surface of a slip friction junction adapted to support a slidably engageable upper impact assembly; b. the upper impact assembly, comprising a first section adapted to slidably engage the shaft, and from which is provided an angled structure affixed to a vertically disposed fastener and a second bearing surface of the slip friction junction, a second section adapted to clench the shaft between the first section and the trimmer head, and a spring disposed between and affixed to the first section and the second section, wherein during operation upon a frontal impact to the string trimmer head the shaft slidably engages the first section and the spring reversibly compresses, wherein the vertically disposed fastener joins the upper impact assembly with the lower mounting shock assembly, and wherein the slip friction junction tensioned by the vertically disposed fastener is effective to permit movement of said upper impact assembly upon lateral impact to the string trimmer head; c. a head angle adjustment sub-combination, effective to adjust a radial angle of the string trimmer head, comprising a motor operably connected to the shaft and a control handle comprising a control lever device operably connected to the motor, the sub-combination effective to rotate the string trimmer head upon actuation of the control lever device, wherein the motor comprises or is operably connected to the shaft via a protective clutch mechanism.