Metal deforming – By application of fluent medium – or energy field – With actuated tool engaging work
Reexamination Certificate
2008-12-17
2011-10-18
Jones, David (Department: 3725)
Metal deforming
By application of fluent medium, or energy field
With actuated tool engaging work
C072S062000, C072S370220, C072S342940, C072S342960, C029S421100
Reexamination Certificate
active
08037726
ABSTRACT:
Method for bending tubular articles with a relative ratio of the bending radius (R) and the outer diameter (D) of the finished pipe which is less than 3, comprising the following steps: forging an article made of material with a predefined composition depending on the final use and with a predefined length (L) in the longitudinal direction and an outer diameter (D); providing a die having an asymmetrical bottom die half with seat for the pipe; and a top die half with punch asymmetrically arranged in the longitudinal direction (X-X) with respect to the vertical center axis of the die; heating the article in an oven to the required temperature for forging depending on the specific composition of the material; positioning the article inside the bottom die half in the longitudinal direction; closing of the two die halves so as to start bending of the article; opening the die; and extracting the bent article.
REFERENCES:
patent: 1962510 (1934-06-01), Kellogg
patent: 2466877 (1949-04-01), Cross
patent: 2957229 (1960-10-01), Beatty
patent: 3934450 (1976-01-01), Reed
patent: 4596128 (1986-06-01), Ringersma et al.
patent: 4841760 (1989-06-01), Ferguson
patent: 4854150 (1989-08-01), Brown et al.
patent: 5974854 (1999-11-01), Tseng
patent: 7140225 (2006-11-01), Takahashi et al.
patent: 7464572 (2008-12-01), Miyanaga et al.
patent: 32 47 200 (1984-07-01), None
patent: 2 062 506 (1981-05-01), None
patent: 57-47530 (1982-03-01), None
patent: 57-152318 (1982-09-01), None
patent: 62-54526 (1987-03-01), None
Patent Abstract of Japan for JP 57-47530, published Mar. 18, 1982.
Patent Abstract of Japan for JP 57-152318, published Sep. 20, 1982.
Patent Abstract of Japan for JP 62-54526, published Mar. 10, 1987.
IBF S.p.A.
Jones David
Mintz Levin Cohn Ferris Glovsky and Popeo P.C.
LandOfFree
Method for bending tubular articles with a relative ratio of... 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 for bending tubular articles with a relative ratio of..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for bending tubular articles with a relative ratio of... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4253592