System for adjusting tension in a tape
AssigneeDeutsche Thomson-Brandt GmbH
InventorsHartmut Schandl, Fritz Weisser
Life of this patent
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Abstract
A system for adjusting the tension of a tape in a magnetic tape record/playback device includes a feed spool, a take-up spool and a motor for feeding the tape between the spools in a forward direction and a reverse direction. A tension sensor senses the tension in the tape as the tape is fed in the forward direction. The tension sensor is locked in its last existing position when the tape direction is changed from the forward direction to the reverse direction. A slip coupling applies a pre-adjusted tension to the tape when the tape is fed in the reverse direction.
Claims4
A system for adjusting the tension of a tape in a magnetic tape record/playback device comprising:
- a feed spool, a take-up spool and a motor for feeding said tape between said spools in a forward direction or a reverse direction;
- tension sensing means for sensing the tension in said tape as said tape is fed in said forward or reverse direction;
- means for maintaining said tension at a predetermined value when said tape direction is changed from said forward direction to said reverse direction;
- a gear set having a slip coupling;
- said slip coupling for applying a desired tape tension to said tape;
- and
- an electro-mechanical converter means coupled to said slip coupling to control a slip coupling effect responsive to said sensed tension to produce said desired tape tension when said tape is fed in said reverse direction.
Dependencies are inferred from the claim text.