Title:
SCREW, INJECTOR, AND PRESSURE MEMBER
Document Type and Number:
WIPO Patent Application WO/2007/069522
Kind Code:
A1
Abstract:
Cost of a screw (20) is reduced and quality of a molded product is improved. The
rear end of the screw (20) is connected to a drive device. The screw has a screw head
(61), backflow prevention device (62), and a plasticization member provided
behind the backflow prevention device (62). The plasticization member has a
screw body (52), a flight (53) formed projecting from the outer peripheral surface
of the screw body (52), and a pressure member (54) formed adjacent to the backflow
prevention device (62), in a predetermined area defined from the forward end
of the screw body (52). The pressure member (54) has a smooth outer peripheral
surface having an outer diameter greater than that of the screw body (52), so that
the shape of the screw (20) can be simplified to reduce its cost and that a molding
material stays at a reduced number of places.
Inventors:
MARUMOTO HIROTSUGU (JP)
KAMIYA MUNEKATSU (CN)
KAMIYA MUNEKATSU (CN)
Application Number:
PCT/JP2006/324433
Publication Date:
June 21, 2007
Filing Date:
December 07, 2006
Export Citation:
Assignee:
SUMITOMO HEAVY INDUSTRIES (JP)
SPIRAL LOGIC LTD (CN)
MARUMOTO HIROTSUGU (JP)
KAMIYA MUNEKATSU (CN)
SPIRAL LOGIC LTD (CN)
MARUMOTO HIROTSUGU (JP)
KAMIYA MUNEKATSU (CN)
International Classes:
B29C45/60; B29C45/52
Foreign References:
| JP2002248664A | 2002-09-03 | |||
| JP2002361696A | 2002-12-18 |
Other References:
See also references of EP 1961550A4
None
None
Attorney, Agent or Firm:
KAWAI, Makoto (7-10 Kandamitoshiroch, Chiyoda-ku Tokyo 53, JP)
Download PDF:
Previous Patent: MICROSTRUCTURE AND METHOD FOR MANUFACTURING SAME
Next Patent: PROCESS FOR PRODUCING InGaN
Next Patent: PROCESS FOR PRODUCING InGaN