Punching/deforming tool for a strapping unit

Wireworking – Seal applying or band fastening – By device having cutting edge

Reexamination Certificate

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Details

C024S0200EE, C140S093200

Reexamination Certificate

active

07128099

ABSTRACT:
Using a punching tool for a strapping unit for producing an auxiliary-free connection of ends of a strapping band, the tool having a recess of different widths, in the case of which at least one section of a recess-bounding wall is provided with a rounded portion in the region of at least one change in width, on the one hand, the intention is to make a fixed closure between the band ends possible. On the other hand, the intention is for this tool to be produced as easily and cost-effectively as possible and, in addition, for uniform cutting forces to be made possible. For this purpose, it is proposed that the rounded portion is of circle-arc shape with a certain radius, and that the largest width of the recess is equal to or less than four times the radius of the wall.

REFERENCES:
patent: 1606331 (1926-11-01), Anderson
patent: 1980154 (1934-11-01), Coe
patent: 3327619 (1967-06-01), Sellman
patent: 3659318 (1972-05-01), Timmberbeil et al.
patent: 5029433 (1991-07-01), Werk
patent: 5526852 (1996-06-01), Rakovski
patent: 5694984 (1997-12-01), Cheung
patent: 11 02 643 (1961-03-01), None
patent: 12 25 543 (1966-09-01), None
patent: 1 905 142 (1970-08-01), None
patent: 1905145 (1970-08-01), None

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