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:
Jun. 12, 1990
Filed:
Nov. 01, 1988
Bradley J Schnittjer, Delhi, IA (US);
American Trencher, Inc., Delhi, IA (US);
Abstract
An apparatus for turning, mixing and aerating windrows of compost to convert the waste material comprising the compost into a useable material, such as soil amendment. The apparatus includes multiple elevating conveyors that first elevate that material to mix and aerate it and then deposit the material onto secondary conveyors that move the material transversely to the windrow before it is re-deposited. In a preferred version, there are three elevating conveyors, two outside and one center conveyor with the outside conveyors depositing the material onto transverse conveyors that move the material inwardly where it is re-deposited on the ground while the center elevating conveyor deposits the material picked up from the center of the windrow on top of the material picked up by the elevating conveyors on the sides. In this manner, the material is not only mixed and aerated but completely inverted.