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:
May. 07, 2002
Filed:
Mar. 29, 2001
Applicant:
Inventors:
Markku Haukioja, Eurajoki, FI;
Paavo Malkiainen, Eura, FI;
Osmo Haaslahti, Kortela, FI;
Mikko Haaslahti, Kortela, FI;
Assignee:
Biolan Oy, , FI;
Primary Examiner:
Int. Cl.
CPC ...
B01F 7/24 ;
U.S. Cl.
CPC ...
B01F 7/24 ;
Abstract
An apparatus for turning and mixing a flat bed composting mass includes an even number of mixing worms that each rotate about a vertical shaft. The end of each vertical shaft may include a wear-resistant element on its end which serves to protect the shaft during operation. The vertical shafts may also be hollow and include an air hole for transmitting air into the composting mass. The pair of mixing worms preferably rotate in opposite directions to lift the composting mass upwardly from the bottom of the mass.