Magnetic tape threading and transport apparatus including a sensor for controlling air bearing block movement

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 5321566
SERIAL NO

07882728

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Abstract

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A magnetic tape cassette helical scan magnetic tape recorder has a magnetic tape threading and transport apparatus including multi-surface, multi-radius air bearing blocks for transporting magnetic tape in a helical path around a tilted rotary head scanner. Vacuum walls located on either side of the rotary head scanner assist in threading the magnetic tape from a magnetic tape cassette around the rotary head scanner. The air bearing blocks are moved into position contiguous to the rotary head scanner after the vacuum threading operation is completed. The vacuum walls have longitudinal slots which are substantially coextensive with the extent of the air bearing blocks. A vacuum sensor is positioned at the end of the slots away from the rotary head scanner so that the sensor is only actuated when the tape is against the whole length of the wall. This prevents damage to the tape when the air bearing blocks are moved behind the threaded tape.

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Patent Owner(s)

Patent OwnerAddress
DATATAPE INCORPORATED360 SIERRA MADRE VILLA PASADENA CA 91009

International Classification(s)

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  • 1992 Application Filing Year
  • G11B Class
  • 1618 Applications Filed
  • 784 Patents Issued To-Date
  • 48.46 % Issued To-Date
Click to zoom InYear of Issuance% of Matters IssuedCumulative IssuancesYearly Issuances1992199319941995199619971998199920000255075100

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Grant, Frederic F Bellflower, CA 32 312
Hierman, Garry Alta Dena, CA 1 5

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  • 5 Citation Count
  • G11B Class
  • 5.84 % this patent is cited more than
  • 31 Age
Citation count rangeNumber of patents cited in rangeNumber of patents cited in various citation count ranges29282103422011431201 - 1011 - 2021 - 3031 - 4041 - 5051 - 6061 - 7071 - 80100 +020406080100120140160180200220240260280300

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