Metal working – Method of mechanical manufacture – Spring making
Reexamination Certificate
2005-01-04
2005-01-04
Omgba, Essama (Department: 3726)
Metal working
Method of mechanical manufacture
Spring making
C029S896910, C029S896930, C072S138000
Reexamination Certificate
active
06836964
ABSTRACT:
A method for producing a helical spring by coiling an element wire while feeding the wire, and performing an after-treatment includes at least a warm setting process. The method includes (1) providing a plurality of parameters for defining a desired configuration of a target helical spring, (2) performing a warm setting simulation for defining a change in configuration of a certain helical spring by applying thereto the warm setting process through a simulation, to determine a free height of a helical spring before the warm setting process on the basis of a free height of the target helical spring, (3) determining a configuration of the helical spring before the after-treatment, on the basis of at least the free height of the helical spring before the warm setting process and the plurality of parameters, (4) coiling the element wire on the basis of the configuration of the helical spring before the after-treatment to produce a coiled wire, and (5) applying the after-treatment to the coiled wire, to produce the target helical spring.
REFERENCES:
patent: 2356912 (1944-08-01), Bennett et al.
patent: 3906766 (1975-09-01), Sato
patent: 4112721 (1978-09-01), Takase et al.
patent: 4336081 (1982-06-01), Hijikata et al.
patent: 4444036 (1984-04-01), Shibata et al.
patent: 4576028 (1986-03-01), Morita
patent: 4672549 (1987-06-01), Saxton
patent: 4884428 (1989-12-01), Matsuura
patent: 4934165 (1990-06-01), Philpot et al.
patent: 5454150 (1995-10-01), Hinke et al.
patent: 5839312 (1998-11-01), Itaya
patent: 5875664 (1999-03-01), Scott et al.
patent: 5930897 (1999-08-01), Wentzek
patent: 6151942 (2000-11-01), Itaya
patent: 6235131 (2001-05-01), Keihle et al.
patent: 6375174 (2002-04-01), Hasegawa et al.
patent: 6470725 (2002-10-01), Boschiero
patent: 6481702 (2002-11-01), Fader et al.
patent: 6550301 (2003-04-01), Hasegawa
patent: 6648996 (2003-11-01), Hasegawa
patent: 6758079 (2004-07-01), Wells et al.
patent: 6779564 (2004-08-01), Hasegawa et al.
patent: 43 09 012 (1994-09-01), None
patent: 1 093 870 (2001-04-01), None
patent: 1 199 118 (2002-04-01), None
patent: A 6-106281 (1994-04-01), None
patent: A 6-294631 (1994-10-01), None
patent: A 7-248811 (1995-09-01), None
patent: A 8-10883 (1996-01-01), None
patent: A 9-141371 (1997-06-01), None
Keiji Hasegwa et al., “New technology of Manufacturing for Coil Springs Used in Automotive Suspensions,” SAE Technical Paper Series, SAE World Congress, Detroit, Michigan, Mar. 4-7, 2002, pp. 1-8.
“Federwickelmaschine für Losgrösse 1,” TR Technische Rundschau Transfer, 90 (1988), Jul. 31, 1998, No. 14, Bem, Ch.
Hasegawa Keiji
Okura Shinsuke
LandOfFree
Method and apparatus for producing a helical spring does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and apparatus for producing a helical spring, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for producing a helical spring will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3367662