Methods for the manufacture of clean air ducts

Details Methods for the manufacture of clean air ducts Methods for the manufacture of clean air ducts

1994-06-30

1996-06-25

Timm, Catherine

Plastic and nonmetallic article shaping or treating: processes

Direct application of fluid pressure differential to...

Producing multilayer work or article

264274, 264279, 264506, B29C 4514, B29C 4950, B29C 4972

Patent

active

055297439

ABSTRACT:
The present invention provides a method for manufacturing a tubular body member for use as a clean air duct (10) including the steps of providing a blow mold (50) with at least one embedded knife (54), forming a tubular body (12) with an apex (78) where the embedded knife is located; removing the tubular body from the blow mold, and cutting the tubular body at the apex so as to form an open end (14,16). Another method for manufacturing a clean air duct includes the steps of providing a tubular body (12) having at least one open end, inserting the open end onto a mandrel (90), closing an injection mold (110) around the tubular body and the mandrel, and injecting a polymeric material into the mold, to secure a connecting means (30) to the tubular body so as to form the air duct. The method concludes by opening the injection mold and removing the air duct from the injection mold. The invention also includes clean air ducts (10) for interconnecting an air filter to a throttle body comprising a blow molded tubular body (12) with at least one open end (14,16), the open end having an annular ring (72) which terminates at an inwardly extending lip (86); and injection molded connecting means (30) molded around and secured to the annular ring, and the lip.

REFERENCES:
patent: 3291670 (1966-12-01), Usab
patent: 3793421 (1971-02-01), Paubandt
patent: 4305904 (1981-12-01), Black
patent: 4752208 (1988-06-01), Iwata et al.
patent: 5089208 (1992-02-01), Nakamura et al.
patent: 5169590 (1992-12-01), Johnson et al.
patent: 5266262 (1993-11-01), Narayama et al.
patent: 5330342 (1994-07-01), Linss et al.

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