US PATENT SUBCLASS 242 / 334
.~ Carrier speed or tension control

Current as of: June, 1999
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242 /   HD   WINDING, TENSIONING, OR GUIDING

324  DF  UNWINDING AND REWINDING A MACHINE CONVERTIBLE INFORMATION CARRIER (E.G., MAGNETIC TAPE OR PHOTOGRAPHIC FILM) {13}
334.~ Carrier speed or tension control {5}
334.1  DF  .~.~> Plural speeds
334.2  DF  .~.~> Diverse signal inputs {1}
334.4  DF  .~.~> Tachometer-type signal device
334.5  DF  .~.~> Coil diameter or weight responsive sensor
334.6  DF  .~.~> Carrier tension responsive signal

DEFINITION

Classification: 242/334

Carrier speed or tension control:

(under subclass 324) Subject matter wherein a drive mechanism for winding the information-bearing carrier includes regulating means for insuring either, (a) carrier movement at a desired rate, or (b) a desired level of longitudinal stress in the carrier.

(1) Note. Movement of the carrier past a utilization station normally is kept at a constant predetermined speed often maintained by regulating tension in the carrier as conditions vary.

SEE OR SEARCH CLASS

200, Electricity: Circuit Makers and Breakers,

61.13+, for a circuit maker/breaker specially designed for operation by a running web or strand, spool, or guide.

250, Radiant Energy, for a detail of a photoelectric device, per se, or in combination with generalized structure, particularly

200+, and 559.01. 360, Dynamic Magnetic Information Storage or Retrieval, particularly

69, 74.7 for winding control and carrier support structure combined with structure peculiar to the transducing of a magnetic information signal.