Application material extruding container and forming method...

Details Application material extruding container and forming method... Application material extruding container and forming method...

2008-03-20

2010-06-08

Walczak, David J (Department: 3751)

Coating implements with material supply

Solid material for rubbing contact or support therefor

Including means to advance material

C222S390000

Reexamination Certificate

active

07731440

ABSTRACT:
To reduce manufacturing cost of an extruding container, a female thread member (5) integrally has an outer tube (5a) and an inner tube (5b) with an annular space (5s) between them being open to one side in an axial direction, and the inner tube (5b) has a female thread (5e) formed on an inner peripheral surface from one side and to extend in the axial direction and slits (5n) extending in the axial direction and being open to one side, while a core pin including a male thread corresponding to the female thread (5e) and a protruding portion corresponding to the slits (5n), is drawn out from an outer mold after a middle mold having a convex portion corresponding to the space (5s), whereby the core pin can be drawn out without breaking the female thread (5e) as the inner tube (5b) is expanded by the slit (5n).

REFERENCES:
patent: 2846705 (1958-08-01), Marz
patent: 7051642 (2006-05-01), Kageyama
patent: 7217054 (2007-05-01), Noguchi
patent: 2006-136421 (2006-01-01), None

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