Cutter blade assembly for weed and grass trimmers

Details Cutter blade assembly for weed and grass trimmers Cutter blade assembly for weed and grass trimmers

1979-09-10

1981-11-17

Hafer, Robert A.

Harvesters

Cutting

Cutter members

30276, A01D 5518

Patent

active

043003362

ABSTRACT:
A lawn trimmer has a cutting blade that is formed entirely of a flexible elastomer material, such as polyurethane. The cutting blade is a generally flat, circular plate, having a rim and a plurality of cutting teeth extending outwardly from the rim. The rim has an outer diameter, with the teeth extending outwardly from the outer diameter, and an inner diameter which defines a central opening.
A securing plate is used to mount the cutting blade to the lawn trimmer. The securing plate has a central portion secured to the lawn trimmer and an outer portion that overlies the rim of the cutting blade. Various embodiments are disclosed for fixedly attaching the securing plate to the rim of the cutting blade.

REFERENCES:
patent: 2439071 (1968-04-01), Basham
patent: 3176455 (1965-04-01), Buchanan
patent: 3343350 (1967-09-01), Freedlander et al.
patent: 3717985 (1973-02-01), Freedlander et al.
patent: 4086700 (1978-05-01), Iwada
patent: 4107841 (1978-08-01), Rebhun

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