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US 2003/0196332 A1Published application
Trimmer head
OwnerDavid Harris, Roy Bridgesinventors
Life of this patent
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Abstract
A trimmer head for use with rotary vegetation cutting devices is disclosed. The head has a wear guide that indicates when the body of the trimmer head is worn down and needs replacement. In an embodiment of the invention, the body comprises two plates that are molded to fit together. The plates have bores for holding connecting pins. The connecting pins not only hold the plates together, but also pivotably support cutting blades, by fitting into openings in the blades.
Claims20
A trimmer head comprising:
- a body, said body having a wear guide;
- and
- a cutting blade attached to said body.
A method of cutting vegetation comprising:
- providing a trimmer head comprising
- a body, said body having a wear guide;
- and
- a cutting blade attached to said body;
- attaching said trimmer head to a trimmer;
- and
- using said trimmer to cut vegetation.
4 more elements
A trimmer head comprising:
- a substantially triangular top plate, said top plate having an interior surface and exterior surface, and said interior surface having a first set of pin bores;
- a substantially circular bottom plate, said bottom plate having an interior surface and exterior surface, said interior surface having a second set of pin bores, and said exterior surface having a wear guide;
- pins, sized so as to fit into both said first set of pin bores and said second set of pin bores;
- and
- blades with openings for fitting into said pins.
2 more elements
Dependencies are inferred from the claim text.