Patents Represented by Attorney Alan A. Gsontos

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  • Means for improving the uniformity-performance of cold feed rubber-extruders
    Patent number: 4957372
    Abstract: The increasingly high standards of consistency and uniformity demanded of cold feed rubber extruders are met by providing notches in the flights of the screw at least in the feed-inlet of the extruder. The notches are at a lead-angle greater than that of the extruder screw flights, so to pull the rubber and advance it positively. Throttling means are used to adjust the amount of squash-back and there is an independently variable-speed drive for a feed roller in the feed inlet.
    Type: Grant
    Filed: August 29, 1989
    Date of Patent: September 18, 1990
    Assignee: Frenkel C-D Aktiengesellschaft
    Inventor: Paul Meyer