Beds – Cots – Sectional
Reexamination Certificate
2002-08-16
2003-09-16
Trettel, Michael F. (Department: 3673)
Beds
Cots
Sectional
C005S116000, C005S110000
Reexamination Certificate
active
06618879
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a portable bed frame, and more particularly to a portable bed frame, which has pivotally connected legs provided with strengthening elements so that it can be supported in a laid-out position more stably.
2. Brief Description of the Prior Art
Referring to
FIGS. 1
, and
2
, a conventional portable bed includes a main part, several support members
10
, and a cloth
30
. The main part consists of two elongated rods
20
arranged parallel to each other, and two transverse rods
40
. The elongated rods
20
each have extension portions
201
at opposing ends. The transverse rods
40
are detachably connected to the extension portions
201
. Connecting elements are fitted to the ends, and the middle of each of the elongated rods
20
. The cloth
30
is tough, and is joined to the elongated rods
20
, and the transverse rods
40
, at edges thereof, with gaps being formed near the connecting elements.
Each of the support members
10
includes a first supporting leg
101
, two second supporting legs
102
, and two joining members
50
. The joining members
50
each have two connecting portions extending from the center thereof in opposite directions. The joining members
50
are pivoted to two opposing sides of a central portion the first supporting leg
101
. The second supporting legs
102
are fixedly connected to the connecting portions of the joining members
50
. Thus, each the of second legs
102
of the pair of second legs are directed in opposite directions. The upper end of the first leg
101
, and the upper end of the upper one of the second legs
102
of each support member
10
are connected to the connecting elements fitted to the elongated rods
20
.
To use the portable bed, the elongated rods
20
are moved away from each other, the joining members
50
pivoting on the corresponding first legs
101
to a position crossing the second legs
102
. The transverse rods
40
are joined to the extension portions
201
to support two ends of the cloth
30
. Thus, the bed can be supported in the laid-out position by the support members
10
.
To fold the bed, referring to
FIG. 4
, the transverse rods
40
are detached from the extension portions
201
, and the elongated rods
20
are moved close to each other, the joining members
50
pivoting on the corresponding first legs
101
. Consequently, the second legs
102
, and the first legs
101
are positioned side by side.
The bed can be easily unfolded for use, and folded to be transported. However, it has a disadvantage in that it is not very stable because the support members
10
lack strengthening elements to hold them stably in the laid-out position.
SUMMARY
It is the main object of the present invention to provide strengthening elements to support legs of a portable bed so that the bed can stand more stably when it is laid-out for use.
The portable bed includes a main part and support members. The main part consists of two pairs of parallel rods. The support members are connected to the main part. The support members each have leg elements pivotally connected thereto, so that it can be moved to an outwardly extended cross-legged position to support the main part. The support members are each provided with strengthening elements to stand more stably. One of the strengthening elements includes a strengthening rod, a limiting member, and a slide. A lower end of the strengthening rod is pivoted to a corresponding limiting member, which is affixed to a corresponding leg element. An upper end of the strengthening rod is pivoted to a corresponding slide, which can slide along the other leg element.
REFERENCES:
patent: 1276539 (1918-08-01), Juten
patent: 1360201 (1920-11-01), Dyett
patent: 1557813 (1925-10-01), Derse et al.
patent: 1608924 (1926-11-01), Brown
patent: 1693537 (1928-11-01), Adkins et al.
patent: 1787566 (1931-01-01), Brown
patent: 2591551 (1952-04-01), Kaplan
patent: 5555576 (1996-09-01), Kim
Rosenberg , Klein & Lee
Trettel Michael F.
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