Beds – Crib – Folding
Reexamination Certificate
2002-11-21
2003-09-09
Luu, Teri Pham (Department: 3673)
Beds
Crib
Folding
C005S093100, C005S098200, C005S098100
Reexamination Certificate
active
06615424
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a base of a foldable baby bed, more particularly a base of a foldable baby bed, which can be folded smoothly, and which has relatively uncomplicated structure.
2. Brief Description of the Prior Art
The applicant of the present invention disclosed a base of a foldable baby bed as shown in
FIGS. 8 and 9
in U.S. patent application, Ser. No. 09/859,382, now abandoned.
Referring to
FIGS. 8
, and
9
, the base of a foldable baby bed frame
4
includes four supporting feet
41
, a middle support
1
, four connecting members
2
, and four horizontal support rods
3
. Vertical support rods of the frame
4
are connected to respective ones of the supporting feet
41
. The horizontal support rods
3
are pivotally connected to respective ones of the feet
41
at outer ends thereof.
The middle support
1
consists of a main body, and a locking mechanism, which includes a control
14
, a locking plate
193
, and two pivotal shafts
17
. The main body of the middle support
1
has a through hole
11
on a center of a top thereof, two juxtaposed parallel connecting holes
16
, and gaps
161
, which are formed on two lateral sides to communicate with respective connecting holes
16
. The main body has curved recesses
151
formed at two ends of the top to face respective gaps
161
. The main body
1
has an elongated hole
131
extending from a front side to a rear side, and recesses
13
around two ends of the elongated hole
131
.
Each of the connecting members
2
has a hole
21
, a extending post
23
, a connecting room
22
, which is defined by first and second stopping wall
221
,
222
.
Each of the pivotal shafts
17
is turnably passed through respective connecting holes
16
with two ends thereof sticking out from the main body, and has an engaging pin
171
sticking out from a middle thereof to be received in the gap
161
.
The control
14
has a handle, and holed cams
142
at two ends of the handle. The locking plate
193
has locking holes
194
at two ends, and a round hole in the middle.
In combination, the horizontal support rods
3
are passed into the holding room
22
of respective connecting members
2
at inner ends thereof, and are pivotally connected thereto. The connecting holes
21
of the connecting members
2
are connected to respective ends of the pivotal shafts
17
. The locking plate
193
is arranged in the main body of the middle support
1
. The holed cams
142
of the control
14
are mounted onto respective recesses
13
of the main body, and a pin
143
is passed through the elongated hole
131
and the cams
142
so that the control
14
is pivoted to the main body. The pin
143
is also passed through a connector
12
, which is up and down movably positioned in the hole
11
. A bolt
19
is passed through the connector
12
, a spring
191
, the central round hole of the plate
193
, a spring
192
, and screwed into a nut in sequence at a lower portion.
Thus, the control
14
can be pivoted on the main body to control position of the locking plate
193
; when the cams
142
are positioned upright, the locking plate
193
will be positioned at an upper position capable of engaging the engaging pin
171
so that the baby bed is fixed in stretched position; when the cams
142
are positioned in laid down position, the locking plate
193
will be positioned at a lower position not capable of engaging the engaging pin
171
, allowing the bed to be folded.
The base of the baby bed can be unlocked to be foldable by means of moving the control
14
. However, the base is found to have disadvantages as followings:
1. The locking mechanism of the base consists of many parts, and the structure is complicated. Therefore, assembling costs much labor and time, and manufacturing cost of the base is increased.
2. Should one of the locking holes
194
fail to disengage its corresponding engaging pin
171
completely when the locking plate
193
is moved to the lower position to allow folding operation of the baby bed, the corresponding pivotal shaft
17
can't be turned. Consequently, damage is likely to be caused to the pivotal shaft
17
, the engaging pin
171
, the locking plate
193
and other associated parts if corresponding support rods
3
are still forced to cause this pivotal shaft
17
to turn.
SUMMARY OF THE INVENTION
Therefore, it is a main object of the present invention to provide a base of a foldable baby bed, which is not subject to damage in folding operation of the baby bed in case the locking mechanism fails to unlock completely.
It is another object of the present invention to provide a base of a foldable baby bed, which has relatively uncomplicated structure, and can be assembled easily and with less labor.
The improvement on the baby bed base mainly has an elongated hole, which is provided on the center of the locking plate instead of the conventional round hole. Therefore, the locking plate can slide lengthwise over the top of the middle support of the base besides moving up and down for locking and unlocking of the pivotal shafts, to which the horizontal support rods of the baby bed base are connected.
In case one of the locking holes of the locking plate fails to disengage its corresponding pivotal shaft completely when the locking plate is moved to allow folding operation of the baby bed, the corresponding pivotal shaft still can be disengaged from corresponding locking hole to be turned because the elongated hole is so long as to allow the locking plate to move in a direction same as the longer side of the locking plate for certain distance.
REFERENCES:
patent: 5446931 (1995-09-01), Wei
patent: 6170099 (2001-01-01), Cheng
patent: 6256814 (2001-07-01), Drobinski
patent: 6305037 (2001-10-01), Cheng
patent: 6336234 (2002-01-01), Kuo
patent: 6349434 (2002-02-01), Zhuang
patent: 6473919 (2002-11-01), Wang
patent: 6510569 (2003-01-01), Hu
patent: 2002/0170111 (2002-11-01), Cheng
Cheng Pao-Hsien
Luu Teri Pham
Rosenberg , Klein & Lee
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