Abstract: An X-Y input device comprises a rotatable ball, a first driven roller held in contact with the rotatable ball and rotatable in response to rotation of the rotatable ball, a second driven roller held in contact with the rotatable ball and rotatable in response to rotation of the rotatable ball, the second driven roller having an axis of rotation extending substantially perpendicularly to that of the first driven roller, first rotation detector means for detecting an amount of rotation of the first driven roller, and second rotation detector means for detecting an amount of rotation of the second driven roller.

Abstract: An X-Y input device known as a "mouse" includes at least one switch lever having a control end exposed through an upper case and an opposite end staked on the upper case. An annular holder for the rotatable ball of the mouse is secured to a lower case and the switch lever has a portion close to the staked end held between the upper case and the annular holder.

Abstract: An X-Y input device comprises a rotatable ball, a first driven roller held in contact with the rotatable ball and rotatable in response to rotation of the rotatable ball, a second driven roller held in contact with the rotatable ball and rotatable in response to rotation of the rotatable ball, the second driven roller having an axis of rotation extending substantially perpendicularly to that of the first driven roller, first rotation detector means for detecting an amount of rotation of the first driven roller, second rotation detector means for detecting an amount of rotation of the second driven roller, and frictional force imposing means for resiliently urging the ball against the first and second driven rollers to impose frictional forces between the ball and the driven rollers, the frictional force imposing means comprising a contact roller held in rolling contact with the ball and having a shaft, a slidable roller support having bearings supporting opposite ends of the shaft and a spring bearing, a fixe

Abstract: An X-Y input device has: a sphere to be rotated disposed rotatably; a first driven roller in contact with the sphere so as to be rotated by the rotational force thereof; a second driven roller in contact with the sphere so as to be rotated by the rotational force thereof, and disposed so that its axial direction is substantially perpendicular to that of the first driven roller; a first rotation amount detecting means for detecting the rotation amount of the first driven roller; a second rotation amount detecting means for detecting the rotation amount of the second driven roller; and a casing for housing these sphere, first and second driven rollers, and first and second rotation amount detecting means. The casing is constituted by an upper case and a lower case. The lower case has support members for supporting respective bearing members for the first and second driven rollers.

Abstract: An X-Y input device comprises a rotatable ball, a first driven roller held in contact with the rotatable ball and rotatable in response to rotation of the rotatable ball, a second driven roller held in contact with the rotatable ball and rotatable in response to rotation of the rotatable ball, the second driven roller having an axis of rotation extending substantially perpendicularly to that of the first driven roller, first rotation detector means for detecting an amount of rotation of the first driven roller, and second rotation detector means for detecting an amount of rotation of the second driven roller.

Abstract: The invention relates to a liquid level detection switch which is provided in a casing with a plurality of terminals having fixed contacts and a signal-outputting portion and with a float having a movable contact to contact with the fixed contacts moving vertically within the casing so that the movable contact contacts or separates from the fixed contacts as the float moves vertically.