Torque-measuring tape cassette

Details Torque-measuring tape cassette Torque-measuring tape cassette

1980-07-22

1982-07-27

Ruehl, Charles A.

Measuring and testing

Dynamometers

Responsive to torque

7386244, 7386247, G01L 316, G01L 506

Patent

active

043411231

ABSTRACT:
A cassette for measuring the torque output of the tape drive of a cassette recorder and/or player has a housing with two hubs, to which the ends of a tape are connected. A slide is displaceable against the force of a spring and carries a tape-deflecting roller about which the tape is trained. The slide carries several pointers for movement with it. Several different exposed faces of the cassette housing have respective dials provided on or at them, and each pointer cooperates with one of these dials. Pull applied to the tape as a result of hub rotation by the tape drive of a machine being tested, causes the slide to be displaced from its rest position. The degree of this displacement is a function of the applied torque which can be read off all of the several dials. At least one of the dials will always be exposed for observation, irrespective of what particular type of cassette machine is being tested. Various modifications are also described herein.

REFERENCES:
patent: 3210994 (1965-10-01), Saxl
patent: 3329013 (1967-07-01), Beindorf et al.
patent: 3771358 (1973-11-01), Yamano
patent: 3942367 (1976-03-01), Thompson

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