Tape driving apparatus

Details Tape driving apparatus Tape driving apparatus

1993-06-09

1995-12-26

Stodola, Daniel P.

Winding, tensioning, or guiding

Unwinding and rewinding a machine convertible information...

With particular drive

G11B 1532

Patent

active

054780233

ABSTRACT:
A mechanism for controlling tension of a magnetic tape during transfer from a take-up reel to a supply reel, wherein the mechanism includes a supply reel assembly and a tape tension regulator detecting the tension. The reel assembly involves a brake drum, an input gear with a friction felt, planet gears and a reel boss with a sun gear. According to a tape tension, the regulator supplies a brake force Tb to the brake drum. The planet gear which is interlocked with the brake drum transmits a drive torque to the reel boss via the sun gear according to the brake force Tb. The input gear transmits a constant torque Tt to the reel boss by means of friction of the felt. The reel boss is rotated for winding the tape with a torque which equals Tt and Tb (Z1/Z2) where Z1 is the number of cogs of the brake drum and Z2 is the number of cogs of the sun gear.

REFERENCES:
patent: 3498571 (1970-03-01), Dilling et al.
patent: 4139169 (1979-02-01), Kono
patent: 4162829 (1979-07-01), Cook et al.
patent: 4346859 (1982-08-01), Osanai
patent: 4437129 (1984-03-01), Yoshida et al.
patent: 4630149 (1986-12-01), Ida
patent: 4635868 (1987-01-01), Jacobson
patent: 4709871 (1987-12-01), Tanaka et al.

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