US PATENT SUBCLASS 242 / 324
UNWINDING AND REWINDING A MACHINE CONVERTIBLE INFORMATION CARRIER (E.G., MAGNETIC TAPE OR PHOTOGRAPHIC FILM)

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

324UNWINDING AND REWINDING A MACHINE CONVERTIBLE INFORMATION CARRIER (E.G., MAGNETIC TAPE OR PHOTOGRAPHIC FILM) {13}
324.1  DF  .~> Carrier helically or randomly wound (e.g., magnetic wire, edge wound film, etc.) {2}
325  DF  .~> Endless coiled carrier (i.e., closed loop) {5}
328  DF  .~> Unwinding from coil center {2}
329  DF  .~> Winding into coil center {1}
330  DF  .~> Simultaneously driven carriers (e.g., separate optic and sound webs)
331  DF  .~> Intermediate storage (e.g., low inertia bin) {2}
332  DF  .~> Including threading {5}
333  DF  .~> Automated stop or reverse {5}
334  DF  .~> Carrier speed or tension control {5}
335  DF  .~> Cartridge system (i.e., cartridge work station or cartridge) {7}
349  DF  .~> With particular drive {7}
357  DF  .~> With detector or indicator (e.g., length scale)
358  DF  .~> Particular frame or frame attachment {1}

DEFINITION

Classification: 242/324

UNWINDING AND REWINDING A MACHINE CONVERTIBLE INFORMATION CARRIER (E.G., MAGNETIC TAPE OR PHOTOGRAPHIC FILM):

(under the class definition) Apparatus or corresponding method for handling elongated material, specifically,

information-bearing carrier having a signal or coating thereon which is transformable into a useful form, which apparatus or method involves the following cycle: (a) uncoiling the elongated material from a supply coil, (b) directing the material along a path past a work station (e.g., a transducer head, lens, or shutter), of a utilization device, and (c) recoiling the material on a take-up coil.

(1) Note. This and the indented subclasses provide for a winding system of a magnetic tape or wire player/recorder, photos:graphic projector, camera, or similar special machine. These subclasses take an original patent claiming a winding apparatus or method that may include a nominally recited work station or component of such a machine (e.g., a transducer head, lens, film gate, shutter, etc.). However, the recitation of either: (a) multiple work station components (e.g., a transducer plus an erase head or a lens plus a film feed claw), or (b) a specific work station (e.g., a transducer with spaced tracking areas or a lens with adjustable focusing means) that establish a particular cooperative relationship between the winding means and special machine bars classification in this class.

(2) Note. In these subclasses, the term coil is used to include either: (a) a wound coil of material, per se, or (b) a rotatable coil support that includes a hub with or without flanges, which coil may simultaneously or sequentially perform both supply and take-up functions.

(3) Note. The term information-bearing carrier denotes elongated material for transporting data or images converted by the utilization device distinct from control data that may be on the elongated material to be used as signals, etc., such as machine control indicia.

SEE OR SEARCH CLASS

250, Radiant Energy, for details relating to a radiant energy device or component (e.g., a photocell control circuit) usable in a slack loop control, stop or reverse control, coil diameter sensor, etc., and particularly

200+, and 559.01. 352, Optics: Motion Pictures, appropriate subclasses, particularly

72+, 173+, 224+, 243, and 244+ for a projector or a projector component adapted to wind, tension, or guide film.

360, Dynamic Magnetic Information Storage or Retrieval,

69, 74.7, 83 through 96.6, 132, and 134 for winding control and carrier support structure combined with structure peculiar to the transducing of a magnetic information signal.

396, Photography, appropriate subclasses and particularly

387+, for a camera structure with winding, feeding, or tensioning film and subclasses 612+ for photos:graphic medium feed in a fluid treating apparatus.

400, Typewriting Machines, appropriate subclasses, particularly

242, 248, 512, 578+, 609+, and 613+ for unwinding and rewinding a typewriter tape past a keystrike work station, and a guide or tensioner component of such a machine.