Replacement cutting attachment for string trimmer
OwnerRobert J. Livingstoninventor
Life of this patent
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Abstract
A replacement string arrangement for a string trimmer employs a brace in which the string is affixed. The brace has an arcuate member with an annular guide tunnel or guide sleeve at one end. The cutting string has an end affixed at a second end of the arcuate member. The string extends out that one end, then forms a loop or bight, and then passes slidably through the guide tunnel and continues radially outward. A free end of the string projects from the cutting head when the replacement string arrangement is installed in the cutting head. The brace and string can be unitarily formed, or the string can be fused into the one end of the arcuate member. The brace may have a wishbone shape. The string profile or cross section may be shaped for improved aerodynamics or improved cutting.
Claims12
Replacement string arrangement for a string trimmer of the type having a rotary cutting head in which a spool having at least one annular bay is provided to hold a length of cutting string;
- the replacement string arrangement comprising
- a brace having an arcuate member with an annular guide tunnel provided at one end of the arcuate member;
- and
- a cutting string having one end affixed at a second end of the arcuate member of the brace, and passing slidably through said guide tunnel to form a hoop that fits around an annular bay of said spool and having a free end that projects radially from said cutting head when the replacement string arrangement is installed in said cutting head.
Dependencies are inferred from the claim text.