Strip winding machine

Winding – tensioning – or guiding – Tension control or brake – Supply controlled

Reexamination Certificate

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Details

C242S415100, C242S394100, C242S545100

Reexamination Certificate

active

11035865

ABSTRACT:
A take-up roll forming apparatus for flexible strip material comprises a motor-driven shaft journaled for rotation on a frame where the shaft extends through a circular plate that is affixed to the shaft. A plurality of magnets is affixed to the plate in a predetermined pattern. A reel having a tubular core is adapted to slip over the motor-driven shaft and the reel also includes a circular end plate having magnets affixed thereto such that when the motor-driven shaft rotates, it tends to carry the reel with it due to the magnetic forces attracting the magnets on the motor-driven plate to the magnets on the end plate of the reel. As the strip material being wound accumulates on the reel, and the effective diameter of the roll of strip material increases to the point where the supply source cannot keep up with the speed at which the strip material is accumulating on the reel, a tension develops in the strip sufficient to overcome the magnetic attraction forces, such that the reel slips relative to the motor-driven shaft to accommodate the speed differential.

REFERENCES:
patent: 3721394 (1973-03-01), Reiser
patent: 4932600 (1990-06-01), Usui et al.
patent: 4946115 (1990-08-01), Muller
patent: 4958780 (1990-09-01), Bruenn et al.
patent: 5028012 (1991-07-01), Kita
patent: 5524834 (1996-06-01), Bogucki-Land
patent: 5992791 (1999-11-01), Tsuda et al.
patent: 6027066 (2000-02-01), Street
patent: 6585181 (2003-07-01), Kronenberger
patent: 6691945 (2004-02-01), Slezak
patent: 6702221 (2004-03-01), Haber et al.
patent: 6786445 (2004-09-01), Todd et al.
patent: 2004/0000608 (2004-01-01), Metza
Warner Electric Brochure, P-1313 Apr. 2003 “Clutch/Brake Permanent Magnet and Magnetic Particle Clut6ches and Brakes”.

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