Device for adjusting a tension arm spring biasing force

Details Device for adjusting a tension arm spring biasing force Device for adjusting a tension arm spring biasing force

1994-07-25

1996-04-02

Levy, Stuart S.

Dynamic magnetic information storage or retrieval

Record transport with head stationary during transducing

Tape record

360 85, 2423346, G11B 1543

Patent

active

055046355

ABSTRACT:
A video cassette recorder is provided with a device for finely adjusting the tension of a loaded magnetic tape, which comprises a tension arm rotatably pivoted at a deck of the recorder and having a tension pole secured thereto for exerting a pressing force on the tape, a coil spring fixed to the tension arm for biasing the tension arm to urge the tension pole against the tape, a slider movably engaged with an elongated slot of the deck and associated with the coil spring, and an adjusting knob rotatably mounted to the deck for actuating the slider along the elongated slot in a lateral direction. The slider includes a rack formed at a side surface thereof. The adjusting knob includes a pinion provided on a shaft thereof and meshed with the rack of the slider. With a lateral movement of the slider caused by the rotation of the adjusting knob, the biasing force of the coil spring exerted against the tension arm is varied to adjust the pressing force of the tension pole applied to the tape.

REFERENCES:
patent: 4943874 (1990-07-01), Takeda et al.
patent: 5070422 (1991-12-01), Sasaki et al.
patent: 5093752 (1992-03-01), Sato et al.
patent: 5305162 (1994-04-01), Kushiro et al.

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