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Gear system for drive of a multi-shaft extruder

  • US 7,594,453 B2
  • Filed: 02/27/2004
  • Issued: 09/29/2009
  • Est. Priority Date: 04/03/2003
  • Status: Active Grant
First Claim
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1. Gear system to drive an extruder with several axially parallel shafts, rotating in the same direction, arranged around a circle at equal angles with respect to each other, which are attached in a torque-proof manner to conveyor elements, wherewith the conveyor elements of adjacent said axially parallel shafts engage with each other, wherein driven shafts of the gear system are attached coaxially and in a torque-proof manner to the axially parallel shafts, each said driven shaft having an axially offset driven pinion, the driven pinions engaging respectively with an externally-toothed drive wheel provided on a central drive shaft and with a surrounding internally-toothed hollow gear wheel, wherein the respective drive wheel of the central drive shaft and the hollow gear wheel are arranged in similarly offset fashion, wherein the hollow gear wheel has an external tooth gearing, with which an outwardly located drive wheel on an outwardly-located drive shaft engages, so that half of the torque of each said driven pinion is generated via the central drive wheel and half via the hollow gear wheel.

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