Folding chair

Details Folding chair Folding chair

2001-07-17

2003-04-15

Cuomo, Peter M. (Department: 3636)

Chairs and seats

Collapsible chair; i.e., relatively folding bottom, back,...

C297S042000, C297S045000, C403S093000

Reexamination Certificate

active

06547321

ABSTRACT:

BACKGROUND OF THE INVENTION
The present invention relates to a folding chair. More particularly, the present invention relates to a folding chair which is operated easily.
Referring to
FIGS. 5
to
7
, a folding chair
10
has a seat pad
70
, a first leg
20
, a second leg
30
, and a folding device
40
which has a square seat
400
, a bolt
50
, and a nut
60
. The first leg
20
and the second leg
30
are disposed on a bottom of the seat pad
70
. The square seat
400
has a first slant oblong hole
401
for receiving the first leg
20
, a second slant oblong hole
402
for receiving the second leg
30
, and a through hole
403
for receiving the bolt
50
. The nut
60
engages with the bolt
50
. It is difficult to form a precise angle of the first slant oblong hole
401
and a precise angle of the second slant oblong hole
402
on the square seat
400
.
SUMMARY OF THE INVENTION
An object of the present invention is to provide a folding chair which is operated easily.
Accordingly, a folding chair comprises a seat, a first leg disposed on a bottom of the seat, a second leg disposed on the bottom of the seat, a first rod connected to an upper end of the first leg and a lower end of the second leg, a second rod connected to a lower end of the first leg and an upper end of the second leg, and a folding device. The folding device has a first joint and a second joint coupling with the first joint. The first joint has a guide channel, a circular aperture, and a slant round hole for receiving the first rod. The second joint has a post inserted in the guide channel of the first joint, a hollow protruded block inserted in the circular aperture of the first joint, a round through aperture, and a slant circular hole for receiving the second rod. A bolt passes through the round through aperture of the second joint and the circular aperture of the first joint. A nut engages with the bolt.


REFERENCES:
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patent: 4566731 (1986-01-01), Marchesini
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patent: 4770559 (1988-09-01), Yoo
patent: 5207478 (1993-05-01), Freese et al.
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patent: 5470039 (1995-11-01), Hilger
patent: 5562330 (1996-10-01), Cabagnero
patent: 5975626 (1999-11-01), Aycock
patent: 6102479 (2000-08-01), Wallace
patent: 6322098 (2001-11-01), Lan
patent: 6401299 (2002-06-01), Schwarz

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