Mulching system for a lawn mower

Details Mulching system for a lawn mower Mulching system for a lawn mower

2008-07-01

2008-07-01

Will, Thomas B (Department: 3671)

Harvesters

Motorized harvester

Having motor on ground-supported carrier

C056S255000, C056S295000, C056SDIG017

Reexamination Certificate

active

11216391

ABSTRACT:
A lawn mower having upper and lower cutter blades in a cutter housing is provided. The blades are disposed with a phase difference such that upper blade edge parts of the upper cutter blade are advanced forward with respect to lower blade edges of the lower cutter blade in the rotation direction, whereby interference of the upper cutter blade with the air-lifting parts of the lower cutter blade is avoided, and the noise produced by the rotation of the upper and lower cutter blades is reduced.

REFERENCES:
patent: 2760327 (1956-08-01), Bovee
patent: 5109656 (1992-05-01), Zimmer
patent: 5209052 (1993-05-01), Carroll
patent: 5259176 (1993-11-01), Kahamura et al.
patent: 5890354 (1999-04-01), Bednar
patent: 5894717 (1999-04-01), Yamashita et al.
patent: 6487840 (2002-12-01), Turner et al.
patent: 6655119 (2003-12-01), Hasei et al.
patent: 4009888 (1990-10-01), None
patent: 2516509 (1992-08-01), None

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