US 6,886,256 B2 · Brush saw cutting head with integral herbicide applicator

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.

Claims17

Dependent claims

A brush saw cutting head comprising:

(a) a drive spindle having lower end drivingly couplable to a cutting element;
(b) an aperture extending through said drive spindle between an upper end of said drive spindle and a lower end region of said drive spindle above said drive spindle lower end;
(c) a member positioned against an underside of said cutting element;
(d) at least one fluid flow channel extending through said member in fluid communication between said drive spindle aperture and an external rim of said member;
and
(e) a housing having a chamber formed in an upper end of said housing, said drive spindle upper end projecting into said chamber, said chamber in fluid communication between said drive spindle aperture and said chamber.

3 more elements

Dependencies are inferred from the claim text.

Brush saw cutting head with integral herbicide applicator

Life of this patent

Brush saw cutting head with integral herbicide applicator

Life of this patent

Abstract

Claims17