Magnetic attachment of a bed knife in a reel mower assembly

Harvesters – Cutting – Rotating cutting-reel type

Reexamination Certificate

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C056SDIG002

Reexamination Certificate

active

06889491

ABSTRACT:
A reel mower assembly comprises a mower reel rotatably mounted to a frame, and a drive operative to rotate the reel about a reel axis. A plurality of magnets are mounted on the frame and a bed knife is magnetically held against the magnets in an operating position such that the bed knife is oriented in cutting relationship with the reel. When the bed knife is in an operating position, sliding movement of the bed knife with respect to the magnets while allowing the bed knife to move away from the magnets may be prevented, when a separating force is exerted on the bed knife in a direction away from the magnets that is greater than an attractive force exerted on the bed knife by the magnets.

REFERENCES:
patent: 3337100 (1967-08-01), Berning
patent: 3350045 (1967-10-01), Mayers
patent: 3782166 (1974-01-01), Whistler et al.
patent: 4195542 (1980-04-01), Zimmer
patent: 4233873 (1980-11-01), Jessen
patent: 5291724 (1994-03-01), Cotton
patent: 5379671 (1995-01-01), Kang
patent: 5477666 (1995-12-01), Cotton
patent: 5979150 (1999-11-01), Klingler
patent: 6044637 (2000-04-01), Thier et al.
patent: 6318059 (2001-11-01), Cotton
patent: 20030000195 (2003-01-01), Watkins
patent: 2597933 (1987-10-01), None

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