Universal string trimmer replacement head
OwnerRobert T. Mackeyinventor
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OwnerRobert T. Mackeyinventor
Estimating the term…
My invention is a replacement head for string trimmers and includes a block, the block being constructed of metal or alloy having the characteristics of strength, rigidity and generally having a hardness to withstand the abuse received by the rotating element of a string trimmer. The block is preferably of a cylindrical shape being essentially a solid piece with a flat top and bottom, the top and bottom of the block having planes essentially parallel to each other. Cut into the top of the block is a counterbore which is internally threaded to be screwed onto the threaded sinaft of the string trimmer. At or near the bottom of the block are two channels, each passing through tile block, the channels being essentially in a stacked relationship mid generally extending perpendicularly to each other. A monofilament string of a defined length is threaded through one channel, wound about the outer peripheral of the block to an opening of the second channel and passed through the second channel, wound about the outer peripheral of the block to the opening of the first channel and pass through the first channel a second time. Each end of the monofilament is then pulled tightly so that two ends of the monofilament extend from the block and the monofilament is tightly connected to the block.
A replaceable cutting head for a string trimmer including a block of material, the block of material having an elongated shape with an axis, an outer perimeter and a top and bottom, a counterbore extending into the block of material from the top thereof penetrating partially into the block of material, a first channel and a second channel passing through the block of material, each being adjacent to and spaced from the bottom of the block, the first channel and the second channel penetrating through the block and extending from the outer perimeter on one side of the block to the outer perimeter on an opposite side of the block, one of said channels spaced from the bottom of the block a greater distance than the other of said channels, mid a monofilament extending through the first and second channels, said monofilament having two ends with one end of the monofilament extending from the block in one direction and the other end of the monofilament extending from the block in another direction.
Dependencies are inferred from the claim text.