Trackball device

Details Trackball device Trackball device

1982-02-10

1983-09-20

Staab, Lawrence J.

Machine element or mechanism

Control lever and linkage systems

Multiple controlled elements

74209, 273DIG28, F16H 1300, G05G 900, G05G 1300

Patent

active

044048653

ABSTRACT:
A trackball device includes a housing containing a plurality of rotatable supports and a ball seated thereon with a portion of the ball projecting through an opening in the housing for manual rotation by a user. First and second ones of the supports comprise shafts respectively rotatable about orthogonally related axes, the shafts being rotatably mounted in bearings receivable in slots in the housing accommodating slight movement thereof in directions perpendicular to the plane of the ball opening. Bias springs resiliently urge the bearings, and thereby the shafts and ball toward the ball opening. The device may also include illumination means and a light-transmitting ball.

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patent: 3694648 (1972-09-01), Yates
patent: 3957144 (1976-05-01), Opyrchal
patent: 4118762 (1978-10-01), Fennell
patent: 4206501 (1980-06-01), Brooks
patent: 4270162 (1981-05-01), Cherouge

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