Combination mouse and track ball unit

Details Combination mouse and track ball unit Combination mouse and track ball unit

1994-02-14

1995-06-27

Hjerpe, Richard

Computer graphics processing and selective visual display system

Display peripheral interface input device

Cursor mark position control device

345167, G09G 508

Patent

active

054283680

ABSTRACT:
A combined mouse and track ball are contained within an ergonomically designed housing or shell. The shell is curved to fit comfortably within the palm of the hand of an operator so that the forefinger and thumb are opposed to each other in a prehensile position. A single shell is operable by a left-handed or right-handed operator to change the mode of operation between use in a track ball mode and use in a mouse mode.

REFERENCES:
patent: Re32633 (1988-03-01), Hovey et al.
patent: 3987685 (1976-10-01), Opocensky
patent: 4562347 (1985-12-01), Hovey et al.
patent: 4818978 (1989-04-01), Kurihara et al.
patent: 4862165 (1989-08-01), Grant
patent: 5175534 (1992-12-01), Thatcher
patent: 5287090 (1994-02-01), Grant
patent: 5298919 (1994-03-01), Chang

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