Braking device for magnetic tape recorder

Winding – tensioning – or guiding – Unwinding and rewinding a machine convertible information... – With particular drive

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2424224, 360 741, G11B 1532, G03B 104

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056012497

ABSTRACT:
A braking device for a tape player/recorder includes a pair of reel platters and a pair of pivotable brake arms individually supporting brake pads. A tension member biases the brake pads against the reel platters in a brake-applied position. The brake arms have extensions extending to a selected point. A spring biased pivotable lever arm includes a tracking end and an actuating end. The actuating end engages the brake arms at the selected point to bias the brake pads away from the reel platters against the action of the tension member in a brake-released position. A lifting element is coaxial with a motor driven shaft and includes a helical ramp extending around the lifting element and rising from a lower level to a higher level. An adjusting element is coaxial with the shaft and is outside of the lifting element. The adjusting element includes lower and higher faces respectively coincident with the lower and higher levels of the ramp. The adjusting element also biases the pivotable lever from the lower face to the helical ramp to enable the tracking end of the lever to rise from the lower level to the upper level and place the braking device into the brake-released position. A clutch disengages the adjusting element from the shaft in the brake-released position.

REFERENCES:
patent: 4730792 (1988-03-01), Jang
patent: 4807061 (1989-02-01), Yoon
patent: 4899951 (1990-02-01), Okada et al.
Patent Abstract Of Japan vol. 6 No. 229 Nov. 16, 1982 57-130258.
Patent Abstract Of Japan vol. 9 No. 30 Feb. 8, 1985 59-172177.

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