Supports – Stand – Standard type
Reexamination Certificate
2004-01-13
2004-09-28
King, Anita M. (Department: 3632)
Supports
Stand
Standard type
C248S127000, C248S917000, C248S404000, C248S149000, C361S689000
Reexamination Certificate
active
06796537
ABSTRACT:
FIELD OF THE INVENTION
This invention relates to a lifting base for a LCD monitor, and more particularly to a lifting base to adjust the monitor to a most appropriate position to a user.
BACKGROUND OF THE INVENTION
With the LCD monitor mass development, the market is gradually increasing. Every product has a lifting base to hold a monitor still and is able to adjust its height.
The adjustment of a prior art uses a spiral spring to balance the weight of the monitor while the spring hangs an extension bar of the monitor. The extension bar then slides along a rail to adjust the height of the monitor.
When the monitor reaches to its highest position, the spiral spring reels back. This balances the weight from the monitor. When the monitor is descended, the spiral spring extends to produce a torque force to balance the monitor.
However, since the spiral spring supports one single side, the extension of the spring will incline towards one side, which leads the monitor to incline as well.
SUMMARY OF THE INVENTION
It is the primary object of the present invention to provide a lifting base for a LCD monitor, which can hold the monitor to any predetermined position securely.
It is another object of the present invention to provide a lifting base for a LCD monitor, which is easy to operate.
It is a further object of the present invention to provide a lifting base for a LCD monitor, which is stable and steady.
REFERENCES:
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patent: 5904328 (1999-05-01), Leveridge et al.
patent: 6189849 (2001-02-01), Sweere et al.
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patent: 6655645 (2003-12-01), Lu et al.
patent: 6695266 (2004-02-01), Tsai
patent: 6702238 (2004-03-01), Wang
patent: 2004/0035989 (2004-02-01), Sweere et al.
patent: 2004/0056161 (2004-03-01), Ishizaki et al.
patent: 2004/0084585 (2004-05-01), Watanabe et al.
patent: 2620323 (1989-03-01), None
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