Apparatus for detecting rotative velocity of a reel table

Details Apparatus for detecting rotative velocity of a reel table Apparatus for detecting rotative velocity of a reel table

1995-12-15

1997-08-05

Darling, John P.

Winding, tensioning, or guiding

Unwinding and rewinding a machine convertible information...

Carrier speed or tension control

242534, 242563, G11B 1546

Patent

active

056533969

ABSTRACT:
An apparatus for detecting rotative velocity of a reel table of a tape recorder continuously detects a rotational state of a reel table to provide data to a control section of a driving mechanism for automatically stopping the reel table when the reel table is not normally rotated, which includes a reel table installed on a deck of a tape recorder for being rotated in accordance with a driving of a driving motor to lead a travelling of a tape, a rotating unit formed to a lower plane of the reel table for being rotated dependently on the rotation of the reel table, and a switching unit for successively repeating connection and short operations in accordance with the rotation of the rotating unit, and providing the result as a pulse signal. Thus, fewer elements are needed to facilitate an assembling thereof, and the rotative velocity of the reel table can be detected by adopting a contact-type detecting system in place of the expensive optical detecting system.

REFERENCES:
patent: 3141626 (1964-07-01), Hoskin
patent: 3343761 (1967-09-01), Rotter
patent: 3598330 (1971-08-01), Gotschewski
patent: 3815847 (1974-06-01), Morell et al.

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