Brush saw cutting head with integral herbicide applicator

Cutlery – Combined cutlery or combined with ancillary feature – With means to apply transient fluid to tool

Reexamination Certificate

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Details

C030S388000, C047S001500

Reexamination Certificate

active

06886256

ABSTRACT:
A chamber is formed in the upper end of a brush saw cutting head housing. The brush saw cutting element drive spindle's upper end projects into the chamber. The drive spindle's lower end projects beneath the housing and is drivingly couplable to the cutting element. A disc is mounted against the underside of the cutting element. A cavity is formed in the disc. At least one channel extends through the disc, between the cavity and the disc's external rim. An aperture extends through the drive spindle, between the chamber and the cavity. Herbicide supplied to the chamber flows from the chamber, through the drive spindle aperture, into the cavity. The drive spindle rotates the disc. Centrifugal force imposed on herbicide within the cavity forces the herbicide through the channel(s) onto the underside of the cutting element, for transfer onto the stumps of material cut by the element.

REFERENCES:
patent: 4926622 (1990-05-01), McKee
patent: 6073389 (2000-06-01), Piccolo
patent: 6446420 (2002-09-01), Worsham et al.
Sproutless Herbicide Applicator, http://www.rittenhouse.ca/asp/Product.asp?PG=754, 2003 web site publication of M.K. Rittenhouse & Sons, St. Catharines, Ontario, Canada.

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