Notebook computer system with a separable trackball

Details Notebook computer system with a separable trackball Notebook computer system with a separable trackball

1993-03-29

1996-08-13

Envall, Jr., Roy N.

Boots, shoes, and leggings

361680, 345167, G06F 300, H05K 500, H05K 700, G09G 508

Patent

active

055463347

ABSTRACT:
A notebook computer system with an easily separable trackball to give the system flexibility. The system makes use of a separable keyboard to achieve the goal of installing and separating the trackball. To this end the notebook computer comprises a keyboard that is able to be at least partially separated from the system, a socket for installation of the trackball module, with the trackball module being partially captured under the keyboard when installed in the socket. A notebook computer having a socket for accommodating a trackball may alternatively be provided with a plain plate, which allows the notebook computer to work normally without the trackball.

REFERENCES:
patent: 4736191 (1988-04-01), Matzke et al.
patent: 4913387 (1990-04-01), Tice
patent: 5049863 (1991-09-01), Oka
patent: 5168427 (1992-12-01), Clancy et al.
patent: 5187468 (1993-02-01), Garthwaite et al.
patent: 5268675 (1993-12-01), Garthwaite et al.
patent: 5287245 (1994-02-01), Lucente et al.
patent: 5355357 (1994-10-01), Yamamori et al.
"Access Method For Feature Expansion", IBM Technical Disclosure Bulletin, vol. 29 No. 8 Jan. 1987.

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