Chairs and seats – Armrest – Adjustable to multiple use positions relative to bottom or back
Reexamination Certificate
2000-02-07
2001-10-02
Cuomo, Peter M. (Department: 3636)
Chairs and seats
Armrest
Adjustable to multiple use positions relative to bottom or back
C297S411360, C297S353000
Reexamination Certificate
active
06296313
ABSTRACT:
FIELD OF THE INVENTION
The present invention relates to an adjusting device, and more particularly to an adjusting device for an armrest of a chair.
DESCRIPTION OF THE RELATED ART
A conventional chair includes a lift device mounted on the bottom of the seat for vertically lifting/lowering the seat so as to properly adjust the height of the seat of the chair. However, the armrests of the conventional chair are respectively fixed on the two sides of the seat, and cannot be adjusted according to the need of a user so that the armrests of the conventional chair cannot suit users of different statures. Accordingly, the relative position of the two armrests is fixed and cannot be arbitrarily adjusted, thereby limiting the available space defined by the seat and the two armrests so that the users easily feel uncomfortable, thereby greatly decreasing the comfort and utility of the chair.
SUMMARY OF THE INVENTION
The present invention has arisen to mitigate and/or obviate the disadvantage of the armrests of the conventional chair.
In accordance with one aspect of the present invention, there is provided an adjusting device for an armrest of a chair comprising: a first support base secured on the seat of the chair; an L-shaped adjusting arm including a first section slidably mounted in the first support base; a first retaining member mounted on the first support base for releasably securing the first section of the adjusting arm to the first support base; a second support base secured on the armrest of the chair and slidably mounted on a second section of the adjusting arm; and a second retaining member mounted on the second support base for releasably securing the second support base to the second section of the adjusting arm.
The second section of the adjusting arm defines an elongated guide slot including a plurality of circular locking holes, and a plurality of slide tracks each located between two adjacent locking holes. The second support base includes a first side wall defining a first circular hole formed with a first annular flange, and a second wall defining a second circular hole formed with a second annular flange. The second retaining member includes an adjusting knob slidably received in the first circular hole, a slide stub mounted to the adjusting knob and slidably extending through the first annular flange to be slidable in the slide tracks of the guide slot, a biasing member mounted on the slide stub and pressed between the adjusting knob and the first annular flange, a locking knob slidably received in the second circular hole, and a locking stub mounted to the locking knob and slidably extending through the second annular flange to be secured to the slide stub and locked in the locking holes of the guide slot. The locking stub of the locking knob has a diameter greater than that of the slide stub of the adjusting knob.
The first section of the adjusting arm defines a recess. The first support base defines an elongated guide slot including a plurality of circular locking holes, and a plurality of slide tracks each located between two adjacent locking holes. The first retaining member includes a locking knob slidably received in the recess and abutting the first support base, a locking stub mounted to the locking knob and locked in the locking holes of the guide slot, a biasing member received in the recess and pressed between the first section of the adjusting arm and the locking knob, and an adjusting knob mounted on the first support base and having a slide stub secured to the locking stub to be slidable in the slide tracks of the guide slot. The locking stub of the locking knob has a diameter greater than that of the slide stub of the adjusting knob.
Further benefits and advantages of the present invention will become apparent after a careful reading of the detailed description with appropriate reference to the accompanying drawings.
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Connolly Bove & Lodge & Hutz LLP
Cuomo Peter M.
Wen Sang Plastics Co., LTD
White Rodney B.
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