Communications: electrical – Audible indication – Percussion-type sound producer
Patent
1981-01-27
1983-05-17
Sloyan, T. J.
Communications: electrical
Audible indication
Percussion-type sound producer
250231SE, 340347M, H03K 1302, G01D 534
Patent
active
043842755
ABSTRACT:
Apparatus for producing digital signals signifying the angular position in each revolution and the number of revolutions of a shaft which rotates a plurality of times. The apparatus includes two rotary position transducers which are coupled to each other and to the shaft. Both of these transducers rotate a plurality of times in response to the rotations of the shaft, one of the transducers rotating at a different speed than the other. Each transducer produces signals which are individual to the respective transducer and are the same for each rotation of the respective transducer.
REFERENCES:
patent: 2666912 (1954-01-01), Gow et al.
patent: 2775755 (1956-12-01), Sink
patent: 2779539 (1957-01-01), Darlington
patent: 2900629 (1959-08-01), Daniels
patent: 2901170 (1959-08-01), Poole
patent: 2993200 (1961-07-01), Walker et al.
patent: 3096444 (1963-07-01), Seward
patent: 4041483 (1977-08-01), Groff
Masel Marvin
Meehan Ralph J.
Schroeder Joris
Greenstien Robert E.
Otis Elevator Company
Sloyan T. J.
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