Replaceable cutting blade for rotary lawn mower

Details Replaceable cutting blade for rotary lawn mower Replaceable cutting blade for rotary lawn mower

1990-09-14

1991-08-06

Bui, Thuy M.

Harvesters

Cutting

Rotating-cutting-disk type

56295, A01D 3473, A01D 5518

Patent

active

050366548

ABSTRACT:
Removeable cutters are mounted at each end of a rotary lawn mower blade, which cutters can be removed and reinstalled with replacements easily and quickly without the use of tools. The replaceable cutters are each held in place by a positive locking arrangement, including a safety lock that is manually released by the user. During operation of the mower, the centrifugal force of the rotating blade further locks the cutters in place so that it is virtually impossible for them to become separated from the blade. The replaceable cutter unit also may include an air deflecting vane that aids in creating a suction action to pull the grass to an erect position and enhance the discharge of the grass clippings.

REFERENCES:
patent: 4594843 (1986-06-01), Anderson et al.
patent: 4651510 (1987-03-01), Malutich
patent: 4750320 (1988-06-01), Liebl
patent: 4779407 (1988-10-01), Pattee

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