Trackball mechanism

Details Trackball mechanism Trackball mechanism

1989-04-06

1990-08-28

Brier, Jeffery A.

Communications: electrical

Land vehicle alarms or indicators

Internal alarm or indicator responsive to a condition of the...

340706, 74471XY, 273148B, G09G 500

Patent

active

049529196

ABSTRACT:
A trackball-type input device (10) uses a retainer (114) to secure a ball (80) to a housing (12) so that a large segment (164) of the ball (80) protrudes from the housing (12) for manipulation by the user, thereby affording precise control over rotational movement of the ball (80).

REFERENCES:
patent: 3643148 (1972-02-01), Brown et al.
patent: 4538476 (1985-09-01), Luque
patent: 4562347 (1985-12-01), Hovey et al.
patent: 4581609 (1986-04-01), Hosogoe et al.
patent: 4785180 (1988-11-01), Dietrich et al.
Measurement Systems, Inc.; Catalog C585 "Positioning and Tracking Controls For the Human Operator".
Two page brochure produced by CIS Group, entitled "The New Geometry Ball Series of the Dimension 6 Family of 3-D Control Devices."

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