Pivot bearing mechanism

Details Pivot bearing mechanism Pivot bearing mechanism

2003-01-28

2004-12-07

Stodola, Daniel P. (Department: 3676)

Miscellaneous hardware (e.g., bushing, carpet fastener, caster,

Hinge

Having stop or abutment

C016S252000, C016S338000

Reexamination Certificate

active

06826802

ABSTRACT:

FIELD OF THE INVENTION
The present invention relates to a pivot bearing mechanism, in which a main body is fixedly mounted on a first member and a pivot shaft is rotatably connected at an end to the main body and fixedly connected at another to a second member. The main body is provided with a slit, a width of which may be changed through a screwing element tightened into a threaded hole extending through the slit, so that a tightness of contact between the main body and the pivot shaft may be adjusted by changing the width of the slit. And, the pivot shaft is a hollow member to allow conducting wires to extend therethrough.
BACKGROUND OF THE INVENTION
A conventional pivot bearing mechanism is shown in
FIGS. 1 and 2
. A first and a second member
11
,
12
are provided at predetermined positions with axially projected locating means
111
and
121
, respectively. The first member
11
includes a radially projected connecting part
112
for mounting on a base
13
, and the second member
12
includes a radially projected connecting part
122
for mounting on an item
14
to be pivotally turned relative to the base
13
. A pivot shaft
15
is extended through holes
113
,
123
defined in the first and the second member
11
and
12
, respectively, so that the second member
12
may bring the item
14
to rotate about the pivot shaft
15
relative to the base
13
until the locating means
111
on the first member
11
abuts on the locating means
121
on the second member
12
to stop the second member
12
and accordingly the item
14
from rotating any further.
In the above-described conventional pivot bearing mechanism, an external force must be applied to the item
14
connected to the second member
12
for the item
14
to rotate until a predetermined stop location is reached. The item
14
is not allowed to stop or locate at an angular position other than that set by the locating means
111
,
121
. Further, there is not any means for controlling a rotating speed of the second member
12
when the latter is caused to rotate relative to the first member
11
. That is, the external force applied to the item
14
has complete control over the rotating speed of the second member
12
relative to the first member
11
.
It is therefore tried by the inventor to develop an improved pivot bearing mechanism to eliminate the drawbacks existed in the conventional pivot bearing mechanism.
SUMMARY OF THE INVENTION
A primary object of the present invention is to provide a pivot bearing mechanism, in which a pivot shaft is rotatably supported on a main body with a tightness of contact between the two components being adjustable, so that a second member fixedly connected to the pivot shaft can be rotated and located at any desired angular position relative to a first member to which the main body is fixedly connected.


REFERENCES:
patent: 951944 (1910-03-01), Farnam
patent: 4490884 (1985-01-01), Vickers
patent: 5131779 (1992-07-01), Sen
patent: 5572769 (1996-11-01), Spechts et al.
patent: 5598607 (1997-02-01), Katagiri
patent: 5632066 (1997-05-01), Huong
patent: 5682645 (1997-11-01), Watabe et al.
patent: 6085388 (2000-07-01), Kaneko
patent: 6654985 (2003-12-01), Lu

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