Metal deforming – Process – Deforming sheet metal
Reexamination Certificate
2006-01-24
2006-01-24
Larson, Lowell A. (Department: 3725)
Metal deforming
Process
Deforming sheet metal
C072S051000, C072S380000
Reexamination Certificate
active
06988390
ABSTRACT:
A method of forming a tubular workpiece which consists in pre-bending a metal plate along at least two longitudinal lines of bend (12–13) then in bending the plate along at least one of the lines of bend (12–13) using a bending member (103–104) that exerts an external clamping force (F7, F8) along a part (23, 24) of the plate towards the at least one of the lines of bend (12, 13). Thereby preventing any sliding of part (23, 24) of the plate along the bending member (103–104) as the bending member bends the part. The bending member is articulated about a virtual geometrical axis (a, c) located inside a tubular section of the workpiece.
REFERENCES:
patent: 422744 (1890-03-01), Dixon
patent: 562877 (1896-06-01), Wittebolle
patent: 1708615 (1929-04-01), Groehn et al.
patent: 3577755 (1971-05-01), Fricker
patent: 3740992 (1973-06-01), Kienzler et al.
patent: 4365500 (1982-12-01), Klukow
patent: 5007264 (1991-04-01), Haack
patent: 6412325 (2002-07-01), Croswell
patent: 1927520 (1971-01-01), None
patent: 1032016 (2000-08-01), None
patent: 2790140 (2000-08-01), None
Jeandeaud Jean-Claude
Reyal Jean-Pierre
Dowell & Dowell , P.C.
Imphy Alloys
Larson Lowell A.
LandOfFree
Method and installation for making a workpiece comprising at... 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 installation for making a workpiece comprising at..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and installation for making a workpiece comprising at... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3577307