Step-rotating device

Details Step-rotating device Step-rotating device

2002-09-06

2004-09-14

Brittain, James R. (Department: 3677)

Joints and connections

Articulated members

Lockable at fixed position

C016S331000

Reexamination Certificate

active

06789976

ABSTRACT:

BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates a step-rotating device. In particular, the present invention relates to a step-rotating device having rollers and a frictional surface with recesses.
2. Description of the Related Art
Liquid crystal displays (LCD) are common plane displays. Compared to cathode ray tube displays (CRT), LCDs have advantages of lower radiation, lower power consumption and smaller profile.
FIG. 1
is a drawing of a conventional LCD, including an LCD panel
11
, an arm
12
, a shaft
13
, and a base
14
. The arm
12
supports the LCD panel and is rotatably connected to the base
14
by the shaft
13
. Thus, users can change the vertical position and the observation angle of the LCD panel
11
.
Previously, the shaft
13
has mostly been achieved by a hinge to change the observation angle, but hinges are precise and costly.
SUMMARY OF THE INVENTION
Accordingly, an object of the present invention is to provide a step-rotating device for a plane display without using a hinge, thus reducing the cost and providing stable support.
The present invention provides a step-rotating device for rotatably connecting a first member and a second member. The device includes a gasket movably connected to the first member and having a first surface with a hole, a base fixed on the second member and having a second surface, facing the first surface, with a shaft rotatably inserted into the hole and a plurality of annularly arranged recesses thereon, and a plurality of rollers disposed between the gasket and the base.


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patent: 1103688 (2001-05-01), None
patent: 2001182421 (2001-07-01), None

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