Signals and indicators – Indicators – Rotary indicator with actuating means
Patent
1992-04-23
1993-06-29
Will, Thomas B.
Signals and indicators
Indicators
Rotary indicator with actuating means
116DIG21, 200308, 74570, G01D 1304
Patent
active
052224570
ABSTRACT:
A position indicator for a shaft rotatable about an axis has a housing fixed adjacent the shaft, a plurality of indicia on the housing angularly equispaced about and radially equispaced from the axis, an eccentric fixed on the shaft and having a periphery that is eccentric to the axis, and an inner indicator plate carried on the periphery of the eccentric, having a periphery with a predetermined rectified length, and formed offset from the axis with an axially throughgoing inner aperture axially alignable with the indicia. A guide fixed on the housing forms a track on which the periphery of the inner indicator plate rides. This track has a predetermined rectified length longer than the rectified length of the periphery of the inner plate so that the indicator plate rolls on the track as the shaft and eccentric rotate. An outer indicator plate fixed on the shaft adjacent the first indicator plate is formed with an axially throughgoing outer aperture axially alignable with the indicia.
REFERENCES:
patent: 2596550 (1952-05-01), Handley
patent: 3151598 (1964-10-01), Bourns et al.
patent: 3517638 (1970-06-01), Kern
patent: 3811403 (1974-05-01), Braukmann
patent: 3894507 (1975-07-01), Koechlin
patent: 3981621 (1976-09-01), Considine
patent: 4411288 (1983-10-01), Gain, Jr.
Dubno Herbert
Maschinenfabrik Reinhausen GmbH
Wilford Andrew
Will Thomas B.
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