Chairs and seats – Bottom – back and leg
Reexamination Certificate
2001-03-27
2002-10-22
Cuomo, Peter M. (Department: 3636)
Chairs and seats
Bottom, back and leg
C297S383000
Reexamination Certificate
active
06467848
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a chair, and more particularly to a chair having a reinforced attaching or mounting mechanism.
2. Description of the Prior Art
As shown in
FIG. 4
, a typical chair comprises a seat cushion
11
disposed on a bottom board
10
, a mounting plate
20
secured on the bottom board
10
with fasteners
21
. A bracket
22
is required to be fixed onto the mounting plate
20
with one or more welding lines
24
and includes an orifice
221
formed therein. A supporting base device
30
includes an actuator
31
, such as a pneumatic cylinder or a hydraulic cylinder disposed thereon and having a rod
33
extended therefrom for engaging and securing into the orifice
221
of the bracket
22
. A seat back
26
includes an arm
27
having an extension
28
extended therefrom and secured to the mounting plate
20
with a lock pin
23
and a fastener
29
or the like. The bracket
22
is welded to the mounting plate
20
and is the weakest portion of the chair and is normally the first element disengaged from the chair after use. In addition, the arm
27
of the seat back
26
may not be solidly secured to the mounting plate
20
.
The present invention has arisen to mitigate and/or obviate the afore-described disadvantages of the conventional chairs.
SUMMARY OF THE INVENTION
The primary objective of the present invention is to provide a chair having a reinforced attaching or mounting mechanism for easily and solidly mounting the seat cushion on the supporting base device.
In accordance with one aspect of the invention, there is provided a chair comprising a bottom board including a channel formed therein, a seat back including an arm having an extension engaged in the channel of the bottom board, a mounting plate secured to the bottom board and engaged on the extension of the arm, and a supporting base device secured to the mounting plate and the bottom board. The mounting plate includes at least one cusp extended therefrom and engaged with the bottom board for forming a gap between the mounting plate and the bottom board.
The bottom board includes a hub secured therein, the mounting plate includes an orifice formed therein and aligned with the hub and communicating with the gap formed between the mounting plate and the bottom board.
The supporting base device includes a rod engaged through the orifice of the mounting plate and secured into the hub.
The bottom board includes a reinforcing bulge extended therefrom and having the channel formed therein for reinforcing the bottom board of the chair.
Further objectives and advantages of the present invention will become apparent from a careful reading of a detailed description provided hereinbelow, with appropriate reference to accompanying drawings.
REFERENCES:
patent: 2662586 (1953-12-01), Cramer
patent: 2729273 (1956-01-01), Hamilton et al.
patent: 2973031 (1961-02-01), Cramer, Jr.
patent: 4054317 (1977-10-01), Stumpf
patent: 4102549 (1978-07-01), Morrison et al.
patent: 5035466 (1991-07-01), Mathews et al.
patent: 5711576 (1998-01-01), Olson et al.
Gien Gin Chong
Tseng Wen Huang
Cuomo Peter M.
Gien Gin Chong
Vu Stephen
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