Sliding resistor
OwnerMasao Imamurainventor
Life of this patent
Estimating the term…
Abstract
A sliding resistor comprises a case bored with a groove in which a slider is slidably received, the slider having a sliding element formed of a leaf spring provided on the bottom plane for abutment against resistance elements mounted on a base plate. The case and slider are both molded, for example, from plastic material. The inner wall of the groove of the case has a cross section formed of a curved plane including a fractional circular portion or a polygonal plane except for the rectangular plane. The peripheral surface of the slider contacting with the inner wall of the groove has substantially the same form as that of the cross section of the inner wall of the groove of the case.
Claims12
A sliding resistor comprising:
- a base plate provided with at least one resistance element connected to connectors;
- a molded slider provided with a contact piece formed of a leaf spring and mounted on the bottom plane of the slider for abutment against the at least one resistance element, and a slider knob erected at the upper surface of the slider and adapted to permit the contact piece to slide in abutment against the at least one resistance element;
- a molded case fixed to the surface of the base plate and provided with a groove in which the molded slider is slidably received, and a slit cut out along the axis of the case for communication with the groove, for guiding the sliding of the slider knob, the slider knob projecting upward from the slit and the molded slider being pressed against the inner wall of the molded case by a biassing force resulting from the leaf spring contact piece;
- and
- means for preventing the vertical joltings of the molded slider by causing it to contact with the inner wall of the groove of the molded case in a non-horizontal direction.
Dependencies are inferred from the claim text.