Tobacco – Cigar or cigarette making – Including perforating
Patent
1990-06-07
1992-04-21
Millin, V.
Tobacco
Cigar or cigarette making
Including perforating
2191217, 21912176, 21912178, A24C 560
Patent
active
051058332
ABSTRACT:
A perforating device for forming holes in cigarettes or similar items, whereby a laser beam, emitted by a laser source, is directed on to the cigarettes, engaged inside respective seats, by means of a mobile reflecting and focusing unit mounted for rotation about an axis, and a rotary reflecting element located on the aforementioned axis; the cigarettes turning about their axis and being conveyed transversely in relation to the same on a drum turning about the axis of the beam at the same speed as the rotary reflector; the drum having a speed different from the speed of the mobile unit and the ratio of the mobile unit speed and the drum speed is substantially, but not exactly, a multiple of said first speed; the mobile unit receiving the beam coaxially with the beam axis and deflecting it first outwards and then towards the beam axis; the focused beam being again deflected outwards towards the cigarettes by a ring of mirrors carried on the rotary reflecting element and equal in number to the seats on the drum.
REFERENCES:
patent: 4524785 (1985-06-01), Sevagnoli
patent: 4633891 (1987-01-01), Mattei et al.
patent: 4720619 (1988-01-01), Mattei et al.
Cantello Maichi
Gobbi Santo R.
Mattei Riccardo
Neri Armando
G. D. Societa per Azioni
Millin V.
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