Patents Represented by Attorney, Agent or Law Firm Orum & Rotet
  • Patent number: 6253925
    Abstract: The invention relates to an arrangement (5) for a filter (6) for plastic material in the form of granulates supplied to an injection nozzle (7), whereby accommodated internally in a casing (8) is a filter body (20) extending in the longitudinal sense of the casing. The filter body (20) consists of metal or some other hard material. Arranged essentially in the longitudinal extent (10) of the filter body (20) is a number of groove-shaped unevennesses (11, 12) in the form of peaks (11) and valleys (12) extending along the filter body on its envelope surface, which unevennesses are executed so as to extend internally within the casing (8) at a distance (S) from it. A gap (9) is formed between the peaks (11) and the casing (8).
    Type: Grant
    Filed: March 11, 1999
    Date of Patent: July 3, 2001
    Inventor: Hans Müller