Chairs and seats – Collapsible chair; i.e. – relatively folding bottom – back,... – Collapsed to a compact bundle having all rigid elongated...
Reexamination Certificate
2000-09-15
2001-10-16
Brown, Peter R. (Department: 3636)
Chairs and seats
Collapsible chair; i.e., relatively folding bottom, back,...
Collapsed to a compact bundle having all rigid elongated...
C297S045000
Reexamination Certificate
active
06302479
ABSTRACT:
BACKGROUND OF THE PRESENT INVENTION
1. Field of Invention
The present invention relates to a beach chair, and more particularly to a foldable beach chair which is facilitated to be folded into a compact unit for storage and carriage.
2. Description of Related Arts
The distinctive feature of a beach chair is its low height. Normally, a beach chair merely has half height of normal chair. As shown in
FIG. 1
, a conventional folding chair is illustrated. If its height is reduced in half, the angle between each of the inclined legs with the ground must be reduced to a half, too. It will damage its supporting structure that highly decreases the supporting ability thereof while maintaining the same width of the folding chair. In other words, the cross tube structure of the conventional folding chair limits the height of the chair.
Therefore, due to the low height requirement of the beach chair, as shown in
FIGS. 2A
, and
2
B, the common foldable beach chair comprises a chair seat A
2
which is made of durable fabric and a chair seat A
1
which is constructed by a set of metal tubes. The chair frame A
1
for supporting the chair seat A
2
comprises a seat frame A
12
, a back frame A
14
for supporting the seat frame A
12
pivotally mounted underneath the seat frame A
12
, and a pair of pivotal arms A
15
each pivotally connecting between the seat frame A
12
and the back frame A
13
. In order to fold the conventional foldable beach chair, fold the back frame A
13
toward the seat frame A
12
by rotating the pivotal arms A
15
outwardly and fold the leg frame A
14
underneath and into the seat frame A
12
. The folded beach chair is bulky and difficult to carry because the size of the beach chair is limited by its seat frame A
12
. Also, the beach chair is usually heavy since the chair frame A
1
must be constructed sturdily, in order to support a user' weight.
SUMMARY OF THE PRESENT INVENTION
A main object of the present invention is to provide a foldable beach chair, which provides a low height strong frame structure that can well support the weight of the user.
Another object of the present invention is to provide a foldable beach chair, which comprises an inclined back frame structure to enable the user's back to comfortably lie on the beach chair.
Another object of the present invention is to provide a foldable beach chair, which has a simple construction that every individual is able to fold and unfold the carriage.
Another object of the present invention is to provide a foldable beach chair, which is adapted for being folded into a compact unit for easily storage and carriage.
Accordingly, in order to accomplish the above objects, the present invention provides a foldable beach chair, comprising a seat frame and a back frame constructed to support a fabric seat thereon, wherein the seat frame comprises:
a pair of front frame legs pivotally connected with each other in cross manner to form a pivotal “X” structure;
a pair of back frame legs pivotally connected with each other in cross manner to form a pivotal “X” structure;
two pairs of side frame legs, each pair comprising a first side frame leg and a second side frame leg pivotally connected with each other in cross manner to form a pivotal “X” structure;
a pair of front lower frame joints for pivotally connecting two lower ends of the two front frames legs with two lower front ends of side frame legs respectively;
a pair of back lower frame joints for pivotally connecting two lower ends of the two back frame legs with two lower ends of the side frame legs respectively;
a pair of front pivot joints for pivotally connecting two upper ends of the two upper ends of the two front frame legs with two upper back ends of the side frame les respectively;
a pair of back upper frame joints for pivotally connecting two upper ends of the two back frame legs with two upper back ends of the side frame legs respectively;
a pair of foldable supporting arms each having a pivot end pivotally connected with one of the two crossed side frame legs of the respective pair of side frame legs in such a manner that a supporting end of each of the supporting arms is extended to bias against the other side frame legs of the respective pair of side frame legs when the foldable beach chair is unfolded to stretch out; and
a guiding means for guiding each supporting arm to bias against the side frame legs of the respective pair of side frame legs.
REFERENCES:
patent: 467340 (1892-01-01), Chichester
patent: 2625207 (1953-01-01), Duke
patent: 2691410 (1954-10-01), Boucher
patent: 5499857 (1996-03-01), Lynch, Jr.
patent: 2532535 (1984-03-01), None
Brown Peter R.
Chan Raymond Y.
David & Raymond Patent Group
Tofasco of America Inc.
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