Electrical resistors – Mechanically variable – Movable contact electrically adjustable over length of...
Reexamination Certificate
2005-08-23
2005-08-23
Easthom, Karl D. (Department: 2832)
Electrical resistors
Mechanically variable
Movable contact electrically adjustable over length of...
C338S163000, C338S174000, C338S202000
Reexamination Certificate
active
06933830
ABSTRACT:
A variable resistor is configured such that a contact of a contact arm is prevented from contacting a driver plate even when the height of a disk section of a sliding contact is reduced so as to reduce the height of the variable resistor. A sliding contact includes an annular driver plate disposed on the top surface, a disk section folded from the external periphery of the driver plate to the back side, and the semi-circular contact arm provided in the external periphery of the disk section opposite to the folded portion. In the external periphery of the driver plate opposite to the folded portion on the back surface thereof, i.e., in a portion of the disk section folded to the back side of the driver plate opposing the contact of the contact arm, a step is provided such that a gap between the driver plate and the contact arm is increased.
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Easthom Karl D.
Keating & Bennett LLP
Murata Manufacturing Co. Ltd.
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