Joint for a collapsible rail of a playpen

Details Joint for a collapsible rail of a playpen Joint for a collapsible rail of a playpen

1999-10-14

2002-04-02

Browne, Lynne H. (Department: 3628)

Beds

Crib

Folding

C005S093100, C403S102000

Reexamination Certificate

active

06363550

ABSTRACT:

BACKGROUND OF THE INVENTION
The present invention relates to a baby playpen and more particularly to a joint for a collapsible rail of the playpen which facilitates safe collapse and precise positioning of the playpen.
A collapsible playpen can reduce the size of the playpen to allow for easier transport. A typical collapsible playpen
20
is shown in
FIGS. 10
to
12
, and comprises four collapsible rails
11
pivoted at four corner members
12
. Each of the rails
11
includes two identical parts pivoted by a joint
10
which enables the rails
11
to be collapsed. The joint
10
has a hollow interior body of inverse U-shaped cross section, a notch in each end of the joint, a first aligned thru hole
29
below each notch and engageable with a second aligned through hole
14
in each part of the rail
11
so as to pivot the parts of the rail
11
thereon by pin
15
, a V-shaped spring plate
3
inserted into the inner end of each part of the rail
11
and each including a pair of projections
31
on lateral sides engageable with a third aligned thru hole
13
adjacent the inner end of each part of the rail and the fourth aligned thru holes
22
of the hollow interior body, and a slide
4
slidably secured into the hollow interior body by a pin
25
and through another notch under the body. The slide
4
includes a V-shaped notch
41
having a pair of sloped surfaces
42
and an aligned oblong hole
43
for engaging the pin
25
. A crown plate
5
abuts against the underside of the pin
25
and is biased by a spring
28
. Since the V-shaped spring plate
3
has two ends engaged in the V-shaped notch
41
, when the slide slides inward relative to the hollow interior body, the spring plate
3
is pressed by the sloped surfaces
42
of the notch
41
and contracts so that the pair of projections
31
disengage with the thru hole
22
to permit the one part of the rail
11
to be collapsible. Accordingly, it is ineffective to just collapse one part of the rail.
SUMMARY OF THE PRESENT INVENTION
The present invention has a principal object to provide a joint for a collapsible rail of a collapsible playpen which joint provides stability and facilitates collapsing of the rail by a single press on the slide in order to make it easier for the user to collapse the playpen.
The present invention will become more fully understood by reference to the following detailed description thereof when read in conjunction with the attached drawings.


REFERENCES:
patent: 5483710 (1996-01-01), Chan
patent: 5611634 (1997-03-01), Wang
patent: 5761755 (1998-06-01), Huang
patent: 5906013 (1999-05-01), Wang
patent: 5906014 (1999-05-01), Zhuang
patent: 5978987 (1999-11-01), Wang
patent: 5988928 (1999-11-01), Cheng
patent: 6223366 (2000-05-01), Cheng
patent: 6202229 (2001-03-01), Cheng

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