Patent · US Expired

Back vented barrel for an extruding assembly

US6302572A · kind A · utility

3Cited by

17References

17Claims

0Family size

Assignee

Century Specialties · US

Inventors

Dan Cox · Palo Alto, US
Steven Misiak · Traverse City, US
Tim Perry · Peachtree City, US

Key dates

Filing date	Dec 9, 1999
Grant date	Oct 16, 2001
Priority date	—
Expiry date	Dec 9, 2019

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB29C48/03
WIPO fieldOther special machines
WIPO sectorMechanical engineering

Abstract

A vent passage (28) extends from a main extruder passage (24) and is spaced from and between a feed extruder passage (26) and a back surface (16) of the barrel (10). The barrel (10) is characterized by the vent passage (28) being disposed to extend from the top surface (12) into the main extruder passage (24) and a vent passage adapter (36) in the vent passage (28) for controlling the venting of gases. The vent passage adapter (36) includes a restrictor member (44) extending downwardly from a mounting plate (38) to form a restricted passage (46) with a screw cover (40). The restrictor member (44) is removably attached to the mounting plate (38) whereby it may be removed for a less restricted venting of gases.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.