Electricity: electrical systems and devices – Housing or mounting assemblies with diverse electrical... – For electronic systems and devices
Reexamination Certificate
1999-08-17
2003-10-28
Datskovsky, Michael (Department: 2835)
Electricity: electrical systems and devices
Housing or mounting assemblies with diverse electrical...
For electronic systems and devices
C361S689000, C248S292140, C345S659000
Reexamination Certificate
active
06639788
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention:
The present invention relates in general to a computer provided with a display of indifferent equilibrium.
2. Description of the Related Art:
FIG. 5
is a side view of a computer provided with a TFT liquid crystal display according to the prior art, wherein the display
52
is supported by a mainframe
51
.
The display
52
can be rotated from a horizontal direction (
FIG. 6
a
) to a vertical direction (
FIG. 6
b
). In such an operation, the display
52
is lifted as indicated by arrow A and then rotated as indicated by arrow B. If the user carelessly releases the display
52
during the lifting process, then the display
52
will drop and collide with other parts. The computer could possibly get damaged.
SUMMARY OF THE INVENTION
An object of the present invention is to provide a computer having a display of indifferent equilibrium. The display does not drop if the user carelessly releases the display.
The computer of the present invention includes a mainframe, a display and a constant-force spring. The display is movably supported by the mainframe. The constant-force spring is simultaneously connected to the mainframe and the display, while the weight of the display is equal to the restoring force of the constant-force spring. Therefore, the display does not drop if the user carelessly releases the display.
REFERENCES:
patent: 4025017 (1977-05-01), Miller
patent: 4616218 (1986-10-01), Bailey et al.
patent: 4768762 (1988-09-01), Lund
patent: 5329289 (1994-07-01), Sakamoto et al.
patent: 6189850 (2001-02-01), Liao et al.
patent: 6233139 (2001-05-01), Hamon
patent: 6338464 (2002-01-01), Jen-Hsiang
patent: 410108104 (1986-11-01), None
patent: 0183938 (1998-04-01), None
Chen Ku-Feng
Liao Hung-Ta
Darby & Darby
Datskovsky Michael
Mitac Technology Corp.
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