Measuring instrument cam-actuated microswitch unit
OwnerOsvaldo Fainiinventor
Life of this patent
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Abstract
A cam-actuated microswitch unit has cams the positions of which can be varied relative to a drive shaft to vary the switch-actuating point. The unit includes a plurality of microswitches rigidly connected to a support while the cams are frictionally retained in a selected angular orientation on the drive shaft which can be connected to a measuring instrument so that its angular orientation is representative of the magnitude of a physical quantity to which the instrument is sensitive. The cams are connected to index pointers which can be moved over a movable scale fixed for rotation with the drive shaft to determine and to display the switch point settings.
Claims5
A cam-actuated microswitch unit comprising a support frame, at least one microswitch fixedly connected to said support frame, at least one cam provided for actuation of said microswitch, a drive shaft adjustably carrying, in an adjustable relative angular orientation, said at least one cam, a gear on said drive shaft to connect it to an associated gear of a measuring instrument sensitive to the value of a physical quantity such that the angular position of said drive shaft is related to the value of said physical quantity detected by said measuring instrument, index pointer means movable with respect to a movable graduated scale carried fixedly on said drive shaft and driven thereby for rotation therewith for indicating the relative angular orientation of said at least one cam with respect to said drive shaft.
Dependencies are inferred from the claim text.