Tape drive assembly with non-slip tachometer roller

Details Tape drive assembly with non-slip tachometer roller Tape drive assembly with non-slip tachometer roller

1990-11-29

1992-02-18

Eley, Timothy V.

Metal working

Means to assemble or disassemble

Puller or pusher means, contained force multiplying operator

291211, 291216, B21B 140, B30B 300

Patent

active

050881728

ABSTRACT:
A tachometer roller for a tape drive assembly for detecting the speed of a tape moving along a reference axis when the tape is in contact with the roller. The roller includes a cylinder extending in a longitudinal axis and adapted to be fixed in a tape drive assembly for rotation along the reference axis. The periphery of the cylinder defines an air vent running obliquely to the longitudinal axis for venting of air captured between the periphery and the tape. The vent preferably is a helical thread groove wound about the cylinder periphery.

REFERENCES:
patent: 3037290 (1962-06-01), Dolby
patent: 3066067 (1962-11-01), Burgess, Jr. et al.
patent: 3374648 (1968-03-01), Maguire

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