The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 20, 1992
Filed:
Jul. 26, 1991
Herbert R Baker, Milwaukee, WI (US);
Tornado Products, Inc., Germantown, WI (US);
Abstract
An apparatus for processing yard waste material such as branches, leaves, twigs or the like includes a hopper, a grinding mechanism disposed within a grinding chamber in communication with the hopper, and a fan mechanism disposed within a fan chamber in communication with the grinding chamber. The fan mechanism includes a plurality of fan blades which generate negative air pressure upon rotation of the fan mechanism, and the negative air pressure is communicated through the grinder housing to the hopper. Material is drawn from the hopper into the grinding chamber by the negative air pressure, where the material is ground and then drawn into the fan chamber. A discharge passage is formed in the fan chamber, to convey the ground material to a discharge outlet associate with the fan chamber. A hose assembly can be employed as an alternative to the hopper for supplying the material to the grinding chamber. A chipper assembly, consisting of one or more chipper knives is mounted to the fan mechanism and rotatable therewith, and a chipper opening is formed in a wall of the fan housing to allow branches or the like to be chipped.