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US 9,414,540 B2Granted
Oriented trimmer line
AssigneeAero-Flex Technologies, Inc.
InventorVincent D. Morabit
Life of this patent
Estimating the term…
Abstract
A power tool head is including a trimmer head or the like is powered with an AC or DC motor. The head and tool attachment are ergonomically constructed to facilitate use and operation. In the trimmer tool, molded line blades with or without an aerodynamic cross-section provide for effective cutting at low speeds and low power requirements. The line blades may be selectively oriented to improve strength and durability.
Claims6
A power tool comprising:
- a rotatable head operatively connected to a motor via a drive shaft or a cable drive;
- and
- flexible line blades secured to the rotatable head, wherein the flexible line blades are divided into geometrical zones along a length of the line blades, and wherein the line blades are oriented by zone to increase tensile strength and prevent end splitting, the line blades being oriented comprising an amount of parallel fiber alignment in a molecular chain of the line blade material, wherein degrees of parallel fiber alignment are varied across the geometrical zones.
Dependencies are inferred from the claim text.