Method of working recessed portion in headrest stay and press apparatus for working recessed portion in headrest stay
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Sep 16, 2008
Grant Date -
Jan 27, 2005
app pub date -
Jul 25, 2003
filing date -
Jul 25, 2003
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
In a method of working a recessed portion 2 in a headrest stay 32 which is provided in the stay portion 32 of the headrest stay 3 formed of a pipe, a recess 2' is preformed by pressing against the stay portion 32 an outer peripheral portion 4a of a first punch roller 4 for preforming having a rounded portion 47 on the outer peripheral portion 4a in a side view. Subsequently, an outer peripheral portion 7a of a second punch roller 7 on the outer periphery portion 7a of which a punch portion for final forming has been formed is directed toward and pressed against the recess 2', so as to form a recessed portion 2.
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