Computer graphics processing and selective visual display system – Display peripheral interface input device – Cursor mark position control device
Reexamination Certificate
1998-12-10
2001-02-13
Mengistu, Amare (Department: 2778)
Computer graphics processing and selective visual display system
Display peripheral interface input device
Cursor mark position control device
Reexamination Certificate
active
06188389
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
This invention is related to an improvement in the structure of a third axis input device for a computer.
2. Description of the Prior Art
Although the conventional third axis input devices for a computer mouse are of various kinds of structure, they apply the same working principle of the first and second axes and are operated either by the thumb or forefinger. However, the conventional third axis input devices are complicated in structre and easily damaged thereby increasing the manufacturing cost.
Therefore, it is an object of the present invention to provide an improvement in the structure of a third axis input device for a computer mouse which can obviate and mitigate the above-mentioned drawbacks.
SUMMARY OF THE INVENTION
This invention is related to an improvement in the structure of a third axis input device for a computer.
According to a preferred embodiment of the present invention, a third axis input device for a computer mouse includes a fixed primary seat, a fixed secondary seat, a wheel, an annular ring-like grating member, a suspending member, and an idle roller, characterized in that: the fixed primary seat has a lower portion provided with a first fixed rod and a first L-shaped hook member adapted to engage with a printed circuit board, a recess between the fixed rod and the L-shaped hook member for receiving a photoelectric controller, two arms provided at two sides of the fixed primary seat for engaging with the fixed secondary seat, a vertical rod and a vertical lug extending upwardly from the top of the fixed primary seat, the fixed secondary seat including a second fixed rod and a second L-shaped hook member having the same structure as the first fixed rod and first L-shaped hook member at the bottom rear portion, a slot at the bottom for receiving a photoelectric controller, and a hole above the slot.
It is the primary object of the present invention to provide an improvement in the structure of a third axis input device for a computer which is durable in use.
It is another object of the present invention to provide an improvement in the structure of a third axis input device for a computer which is simple in construction.
It is still another object of the present invention to provide an improvement in the structure of a third axis input device for a computer which is inexpensive to manufacture.
The foregoing objects and summary provide only a brief introduction to the present invention. To fully appreciate these and other objects of the present invention as well as the invention itself, all of which will become apparent to those skilled in the art, the following detailed description of the invention and the claims should be read in conjunction with the accompanying drawings. Throughout the specification and drawings identical reference numerals refer to identical or similar parts.
Many other advantages and features of the present invention will become manifest to those versed in the art upon making reference to the detailed description and the accompanying sheets of drawings in which a preferred structural embodiment incorporating the principles of the present invention is shown by way of illustrative example.
REFERENCES:
patent: 5446481 (1995-08-01), Gillick et al.
patent: 5530455 (1996-06-01), Gillick et al.
patent: 5808568 (1998-09-01), Wu
patent: 5912661 (1999-06-01), Siddiqui
patent: 5917473 (1999-07-01), Yeh
patent: 6014130 (1999-12-01), Chou
A & J
Chic Technology Corp.
Mengistu Amare
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