Beds – Crib – Folding
Reexamination Certificate
2000-05-11
2001-10-30
Browne, Lynne H. (Department: 3628)
Beds
Crib
Folding
C005S098100
Reexamination Certificate
active
06308352
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a foldable base for a playpen, and particularly, to a foldable base that has excellent support and can be used to fold any kind of playpen.
2. Description of Related Art
In U.S. Pat. No. 5,970,540, which also was granted to the same applicant, an improved foldable base for a playpen was disclosed, which included a first pair of side rails pivotally connected to a first side joint and a second pair of side rails pivotally connected to a second side joint. A T-shaped joint is situated between each pair of rails. A central joint is located in the center of the playpen and has outer and inner joints pivotally connected to each other. Two pairs of bars are provided, each pair of the bars is pivotally connected to the respective T-shaped joint and two of the respective side rails. Two linking rods are also provided, each pivotally connected at an end to the respective T-shaped joint and at the opposite end to the respective joint member of the central joint.
However, only one set of linking rods is used to support the bottom of the playpen, resulting in the support area provided by the set of linking rods being too small to sufficiently support the playpen.
Therefore, a foldable base that has excellent support and can be used to fold any kind of playpen is still desired.
SUMMARY OF THE INVENTION
The objective of the present invention is to provide a foldable base that has excellent support and can be used to fold any kind of playpen.
To achieve the objective, the foldable base for a playpen in accordance with the present invention comprises two sets of side rails, two side joints, two sets of corner feet, two sets of connecting bars, two hinge joints, two sets of locking rods and two inner joints. The two sets of side rails are respectively mounted on the bottom of the playpen. The two side rail members in each pair are connected to a side joint to pivotally a complete side rail. A corner foot is mounted on the end of each side rail. The two sets of connecting bars are connected to the side rails near the corner feet. The hinge joint is mounted between the two bars forming each connecting bar. Each set of locking rods is connected between the two sets of connecting rods. An inner joint forms the connection at the midpoint of the locking rods.
Other objectives, advantages, and novel features of the invention will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings.
REFERENCES:
patent: 5394574 (1995-03-01), Chuang
patent: 5781944 (1998-07-01), Huang
patent: 5970540 (1999-10-01), Cheng
patent: 6065163 (2000-05-01), Hung
Browne Lynne H.
Conley Frederick
Dellett and Walters
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