Method for producing a housing for a throttle valve connection piece
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Nov 18, 2003
Grant Date -
Feb 28, 2002
app pub date -
Apr 18, 2001
filing date -
May 12, 2000
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The invention relates to a method for producing a housing (12) for a throttle valve connection piece (10), which housing is to have particularly high dimensional stability. For this purpose, the housing (12), which has a throttle orifice (16) for a throttle valve (20), is produced from plastic (14) by the injection molding method, plastic (14) being partially injected around a metal cylinder (28) which, at least in the region of the throttle valve (20), forms the throttle orifice (16). In this case, before the injection molding method, an expanding mandrel (50) is expanded against the inner face (33) of the metal cylinder (28). During the injection molding method, the inner face (33) of the metal cylinder (28) is supported at least partially by the expanding mandrel (50). After the injection molding method, a reduction in the outer circumference (80) of the expanding mandrel (50) is carried out in order to remove the expanding mandrel (50) from the interior (70) of the metal cylinder (28).
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully