Boots – shoes – and leggings
Patent
1994-08-11
1997-06-03
Voeltz, Emanuel T.
Boots, shoes, and leggings
364265, 3642662, 3649252, 318640, B62D 500
Patent
active
056361378
ABSTRACT:
An improved torque sensor, or relative angular movement sensor, comprises an input member, an output member, LED light sources, a pair of photodetector units adapted to receive light from the LED light sources, and signal processing means, in which said signal processing means is adapted to receive output signals from the photodetector units, the output signals of the photodetector units being dependent upon the light signals which they receive, and the signal processing means being adapted to process the output signals from the photodetector units so as to produce a modified output signal indicative of the relative angular displacement between, or torque applied between, the input and output member. The improvement comprises the provision of diagnostic means which continuously monitors a sum signal, .SIGMA., which comprises the sum of the output signals from the photodetector units, and which detects any variation in the sum signal due to failure of the sensor.
REFERENCES:
patent: 3938890 (1976-02-01), Flavell
patent: 4637264 (1987-01-01), Takahashi et al.
patent: 4871039 (1989-10-01), Daido et al.
patent: 4887682 (1989-12-01), Drutchas et al.
patent: 5285390 (1994-02-01), Haseda et al.
Lucas Industries Public Limited Company
Miller Craig Steven
Voeltz Emanuel T.
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