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Class Information
Number: 242/344
Name: Winding, tensioning, or guiding > Unwinding and rewinding a machine convertible information carrier (e.g., magnetic tape or photographic film) > Cartridge system (i.e., cartridge work station or cartridge) > Coil-to-coil cartridge > With indicator or detector
Description: Subject matter wherein the cartridge includes a device for either: (a) measuring the length or other physical condition of the carrier, or (b) sensing a physical condition (e.g., completion of a winding or unwinding cycle or a particular type of cartridge).

Patents under this class:
1 2 3

Patent Number Title Of Patent Date Issued
4412663 Magnetic tape cassette comprising an indexing device for the unwinding of the tape Nov. 1, 1983
4406426 Secrecy-coded cassette Sep. 27, 1983
4405096 Magnetic tape cassette Sep. 20, 1983
4398300 Method and apparatus for cassette identification by operating characteristics Aug. 9, 1983
4382523 Tape cover of magnetic tape cassette and process for preparing tape cover May. 10, 1983
4382522 Tape cover of magnetic tape cassette and process for preparing tape cover May. 10, 1983
4343024 Device for detecting tape end of magnetic recording apparatus Aug. 3, 1982
4340194 Tape cassette Jul. 20, 1982
4316655 Adjustable automatic surveillance camera Feb. 23, 1982
4301488 Tape cassette Nov. 17, 1981
4232371 Apparatus for indicating the amount of tape wound upon a reel Nov. 4, 1980
4191984 Tape cassette Mar. 4, 1980
4185793 Cassette using tape-marking elements Jan. 29, 1980
4173319 Magnetic tape cassette Nov. 6, 1979
4135316 Tape cassettes having indications for blind use Jan. 23, 1979
4091426 Device for detecting an end of a cassette tape May. 23, 1978
4072995 Tape viewing system for micro-cassette tape recorder Feb. 7, 1978
4063370 Tape cassettes having indications for blind use Dec. 20, 1977
4044233 End predictor for cassette tape Aug. 23, 1977
4030685 Magnetic tape magazine Jun. 21, 1977
4012011 Tape cassette Mar. 15, 1977
4001891 Direct individual program readout of eight-track tape cartridge Jan. 4, 1977
3995319 Tape recorder cassette adapted to indicate the number of times the tape is played Nov. 30, 1976
3980254 Film strip leader alignment aid Sep. 14, 1976
3942367 Transport torque and tension measurement device Mar. 9, 1976

1 2 3

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