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:
Apr. 23, 1996
Filed:
Apr. 13, 1994
Applicant:
Inventors:
Assignee:
Ems-Inventa AG, Zuerich, CH;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01F / ; F16H / ;
U.S. Cl.
CPC ...
26421123 ; 264102 ; 26421124 ; 264349 ; 366 83 ; 366 84 ; 366 91 ; 422136 ; 422137 ; 425203 ; 425204 ; 425205 ; 475331 ; 475332 ;
Abstract
A planetary gear for a multiple-screw extruder includes a circular stationary housing having internal teeth, a sun wheel formed from at least one toothed portion of a spindle, and a plurality of main planet wheels formed from at least one toothed free end of a plurality of screws and arranged in a circle. The plurality of main planet wheels are spaced from one another, from the sun wheel and from the internal housing teeth. A plurality of internal and external intermediate planet wheels are arranged between the sun wheel and the main planet wheels and between the main planet wheels and the internal housing teeth, respectively.