Rotary variable resistor
AssigneeAlps Electric Co., Ltd.
InventorsHirokuni Tanabe, Masahiro Onodera
Life of this patent
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Abstract
In a rotary variable resistor wherein variable resistors which are operated by inner and outer shafts independently of each other are received in a single case; an unrotatable plate member having both its surfaces smoothed is interposed between the inner and outer shafts so as to prevent these shafts from turning together undesirably.
Claims3
In a rotary variable resistor having two concentric shafts including a first outer shaft carrying a first slider outwardly of its lower end portion, and an inner shaft extending through said outer shaft and carrying on its lower portion a second slider adapted to pass between said outer shaft and said first slider during rotation of either of said shafts, the improvement including a plate member held between respective flange portions formed on the lower portion of said outer and inner shafts and means engaging said plate member for preventing it from rotating whenever either of said shafts is rotated to prevent such rotation being transmitted to the other shaft.
Dependencies are inferred from the claim text.