US PATENT SUBCLASS 242 / 334.4
.~.~ Tachometer-type signal device

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


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  DF  .~ Carrier speed or tension control {5}
334.4.~.~ Tachometer-type signal device

DEFINITION

Classification: 242/334.4

Tachometer-type signal device:

(under subclass 334) Subject matter wherein the regulating means includes a mechanism responsive to an input signal that counts turns of a rotatable element whose speed is proportional to the rate of movement of the carrier.