Pressing tool

Details Pressing tool Pressing tool

2006-01-31

2006-01-31

Crane, Daniel C. (Department: 3725)

Metal deforming

By three or more coacting relatively movable tools

Concurrently actuated tools

C072S416000, C029S751000

Reexamination Certificate

active

06990843

ABSTRACT:
The invention relates to a pressing tool (8) provided with three or four press mandrels (12, 15) which move towards each other during the pressing process. The press mandrels (12–15) have a roof-shaped transversal profile. The lateral distance (36) between the press mandrels (12–15) is increasingly reduced during the pressing process. An extending element (37) is arranged between two press mandrels, extending from one press mandrel to another press mandrel and being inserted into the other press mandrel during the pressing process. The aim of the invention is to improve said pressing device and to improve pressing. In order to block the above-mentioned distance (36), the extending element (37) is disposed in such a way that both roof edges (38) of the corresponding press mandrels cut across said extending element (37) in an initial position.

REFERENCES:
patent: 3695087 (1972-10-01), Tuberman
patent: 3728889 (1973-04-01), McIver et al.
patent: 4308744 (1982-01-01), Baker
patent: 5335530 (1994-08-01), Homm
patent: 5934136 (1999-08-01), Bracher et al.
patent: 19520928 (1996-12-01), None

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