Chairs and seats – Movable back – Tiltable
Reexamination Certificate
2000-05-05
2001-02-20
Barfield, Anthony D. (Department: 3636)
Chairs and seats
Movable back
Tiltable
C297SDIG002, C297S440150
Reexamination Certificate
active
06189973
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a seat. and more particularly to a seat of a chair having a foldable seat back.
2. Description of the Prior Art
Typical chairs, particularly the seat of the chairs comprise a seat back solidly secured to the rear portion thereof and may not be folded relative to the seat such that the seat comprise a huge volume which is adverse for storing and transportation purposes.
The present invention has arisen to mitigate and/or obviate the afore-described disadvantages of the conventional chairs or seats.
SUMMARY OF THE INVENTION
The primary objective of the present invention is to provide a seat including a seat back foldable to a compact configuration for greatly reducing the volume of the seat and for facilitating the storing and transportation of the seat.
The other objective of the present invention is to provide a seat including a seat back that may be easily rotated and folded relative to a base to the compact configuration.
In accordance with one aspect of the invention, there is provided a seat comprising a base including a rear portion having a block extended rearward therefrom for defining a pair of notches in the rear portion of the base, the block including two sides each having an extension extended therefrom and extended inward of the notches of the base respectively, and a plate including an opening formed therein and defined between a pair of legs, the plate including a pair of pivot pins extended from the legs respectively and extended inward of the opening of the plate for engaging into the recesses of the extensions respectively. The plate is rotatable about the pivot pins relative to the base between a vertical position and a horizontal folded position relative to the base, and the legs are engaged in the notches of the base respectively when the plate is rotated to the vertical position relative to the base. The seat may be folded to the compact configuration for greatly reducing the volume of the seat and for facilitating the storing and transportation of the seat when the plate or the seat back is rotated and folded to engage with the base.
The extensions of the block each includes a recess formed therein and communicating with the notches of the base, the pivot pins are engaged into the notches of the base when the plate is rotated to the vertical position relative to the base and when the plate is released.
The block includes a jut extended therefrom, the plate includes a cavity formed therein for receiving the jut of the block and for securing the plate to the base. The extensions of the block each includes a projection extended therefrom, the plate includes a pair of depressions formed therein for receiving the projections of the extensions and for securing the plate to the base.
A retaining device is further provided for retaining the plate to the base and includes a pair of stops secured to the legs and engaged with the extensions for engaging with the extensions and for retaining the plate to the base. The legs each includes a slot formed therein for receiving the stops respectively, the stops each includes a protrusion extended inward of the opening of the plate for engaging with the extensions. The extensions each includes a curved surface formed therein for engaging with the protrusions of the stops and for guiding a rotation of the legs of the plate relative to the extensions of the block.
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: 4871209 (1989-10-01), Handleman
patent: 5820220 (1998-10-01), Wu
patent: 6015190 (1989-10-01), Wend
Barfield Anthony D.
Baxley Charles E.
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