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Abrasive rotary cutting string manufacture and use

a technology of rotary cutting and cutting strings, which is applied in the field of improving the manufacturing method of rotary cutting strings, can solve the problems of viscous periphery of the strings in which abrasive particles are embedded, and achieve the effects of improving the cutting capability of the line, simple and inexpensive, and enhancing the cutting efficacy of the cutting strings

Inactive Publication Date: 2011-03-17
BHATIA RAJEEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The abrasive cutting string improves cutting efficiency by utilizing both sawing and impact effects, reduces stress on the trimmer, and extends the string's lifespan by allowing lower rotational velocities and better heat dissipation, enabling faster cutting of thicker vegetation with reduced maintenance costs.

Problems solved by technology

This results in a viscous periphery of the string in which abrasive particles are embedded.

Method used

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  • Abrasive rotary cutting string manufacture and use
  • Abrasive rotary cutting string manufacture and use
  • Abrasive rotary cutting string manufacture and use

Examples

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Embodiment Construction

[0021]Referring now to the drawings, a cutting string 10 and a preferred method for making the cutting string of the invention are illustrated by FIGS. 1 through 2. As shown in FIG. 1A, a preferred cutting string is designated generally by reference numeral 10. The cutting string 10 is composed of a plastomeric material 11 such as Nylon 6 or Nylon 66 that is extruded to have a substantially circular cross-sectional shape. It is contemplated within the scope of the invention, however, that cutting string 10 may be composed of any suitable material that may be formed into a string-like configuration. Further, it is contemplated within the scope of the invention that cutting string 10 may be formed to have any suitable cross-sectional shape such as oval, crescent, semi-circular, triangular, square, rectangular, pentagonal, hexagonal, octagonal or any other polygonal shape. It is further contemplated within the scope of the invention that cutting string 10 may be produced by a process o...

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Abstract

A method of producing an abrasive cutting string provides for coating a plastomeric string with a solution of a solvent and the plastomeric material of the string, applying an abrasive and removing the solvent to thereby provide a cutting string with excellent abrasive bind and string coverage, that can be manufactured at high speeds, and then used on a spool in the rotary cutting assembly of a string trimmer to incrementally feed at least one extremity of the abrasive string for rotation through a cutting swath.

Description

[0001]The present application is a continuation of U.S. Ser. No. 11 / 640,029, filed Dec. 15, 2006.FIELD OF THE INVENTION[0002]This invention relates generally to an improved method of manufacturing abrasive cutting string commonly used as cutting string for cutting vegetation such as grass, weeds, brush and the like in combination with a rotary string trimmer with at least one extremity of the cutting string extending from a cutting head assembly and being rotated for impacting vegetation.BACKGROUND OF THE INVENTION[0003]It is known to use extruded thermoplastic string such as of Nylon to cut grass, weeds, brush and the like in combination with a rotary string trimmer. Conventional thermoplastic strings, however, suffer from several disadvantages. For example, conventional strings have a substantially smooth exterior surface. More particularly, the exterior surface of conventional strings is devoid of any abrasive or aggregate materials which produce cutting surfaces. Instead, conven...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): B24D11/00B24D3/20
CPCB24D11/001A01D34/4168
Inventor BHATIA, RAJEEV
Owner BHATIA RAJEEV
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