Rotary head for a dethatching machine
AssigneeKwik Products, Inc.
InventorFernando R. Iacona
Life of this patent
Estimating the term…
Abstract
A rotary head for dethatching machine includes a plurality of channels which are evenly distributed along the outer periphery of the rotary head for receiving flexible dethatching filaments. The dethatching filaments are elongated with a plurality of barb-like protrusions on one end thereof for engagement in the channels of the housings. Once a filament is inserted into a channel, it cannot be pulled out due to the protrusions engaging the interior and exterior walls of the channel of the rotary head. A plurality of rotary heads are mounted on a shaft of a machine. During rotation of the shaft and the rotary heads, the flexible filaments contact the accumulated dethatch with sufficient force to dislodge thatch for later retrieval and clean up.
Claims11
A rotary head for a grass dethatching machine comprising:
- a housing having a plurality of channels distributed about the perimeter of the housings, each said channel having a restricted opening, said housing having a central opening for engaging the drive shaft of the grass dethatching machine;
- and
- a corresponding plurality of elongated flexible filaments, each flexible filament having a plurality of barb-like protrusions at one end thereof, which barb-like protrusions extend through said restricted opening for engagement in a channel of the housing.
A grass dethatcher comprising;
- a frame assembly including wheels and having a generally horizontally extending rotary shaft;
- a plurality of rotary heads fixedly secure to said shaft for rotation therewith, each said rotary head including a housing having a plurality of channels distributed over the perimeter of the housing, each said channel having a restricted opening, said rotary head further including a corresponding plurality of elongated flexible filaments, each flexible filament having a plurality of barb-like protrusions at one end thereof, said barb-like protrusions extending through said restricted opening for engagement in a channel of the housing said flexible filaments extending radially outwardly from said housing and being disposed generally perpendicular to the horizontal axis of said rotary shaft during operation of said grass dethatcher;
- and
- drive means secured to the frame assembly and operatively connected to said rotatable shaft whereby, during operation of said drive means, the flexible filaments are rotated above the horizontal shaft and extend a sufficient distance for the dethatching of a lawn.
Dependencies are inferred from the claim text.