Chairs and seats – Movable back – Horizontally
Patent
1992-09-03
1994-09-06
Dorner, Kenneth J.
Chairs and seats
Movable back
Horizontally
297353, B60N 202
Patent
active
053442164
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE INVENTION
The invention relates to a sofa or armchair with an adjustable backrest to accommodate people of differing height.
DESCRIPTION OF THE INVENTION
Various types of backrests are known, including:
A. fixed back rest;
B. the following methods or mechanisms: inclination of the back rest, support for the lumbar region of the back, moving of back high position, and lifting and inclining of the seat;
C. car seats and the like are fitted with equipment to move the whole seat such as glide rails or the like;
D. office chairs can also have distance adjustment of the support for the lumbar region of the back.
The known systems and methods for distance regulation of the back, mainly used in chairs, are not designed for use in couches, sofas and armchairs and are therefore impossible or at least only with difficulty applicable to sofas or armchairs. Furthermore, these systems are too complicated and troublesome to be used by children and the elderly. To unfasten, to take off and remount the back of a sofa would be difficult or impossible.
SUMMARY OF THE INVENTION
An armchair or sofa with an adjustable sitting depth in accordance with the invention has a simple construction and is easy to use. The back is easy to take off and to place back, and the sitting depth adjustment is simple to effect.
After disconnecting the back it can be taken off and placed back simply, and then easily locked by moving the adjustment locking device into locking position.
The invention makes it possible for people of different height to adjust the back rest of their sofa to a position where the backrest gives the best support to the back and keeps the sitting position comfortable, thus reducing for its part various back problems which result from a bad sitting position.
The invention provides a new point of view for furniture design and makes it possible to design a piece of furniture which is both practical and versatile.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a diagrammatic side elevation view of a first embodiment of a sofa or armchair in accordance with the invention with an adjustable sitting depth with a back rest and an adjusting and locking service.
FIG. 2 is a diagrammatic rear elevation view of a portion of the embodiment of FIG. 1 showing an end of the back rest--seen from behind--and its adjusting and locking device here turned to the left.
FIG. 3 is like FIG. 2 but the adjusting and locking device is turned to its locking position as shown in FIG. 1.
FIGS. 4 and 5 are like FIGS. 2 and 3 and illustrate a second embodiment of an adjusting and locking device in accordance with the invention.
FIG. 6 is a diagrammatic rear elevation view of a portion of a sofa or armchair illustrating a third embodiment of an adjusting and locking device in accordance with the invention.
DESCRIPTION OF PREFERRED EMBODIMENTS
FIG. 1 shows the end of a sofa or armchair--seen from the side--where 7 is the sofa or armchair, 8 the end comprising of a lifting or armrest part, 1 the back rest, with an adjusting and locking device 2 in its locking position. When adjustment of the position of the backrest is to be effected in predetermined steps, surfaces of locking device 2 and corresponding surfaces of armrests 8 can be roughened at locations 9 and/or 10 or provided at locations 9 and/or 10 with cogs, slots, pins or the like in order to increase the locking effect of locking device 2. In the illustrated embodiment, cogs are provided on the upper surface of armrest 8 and on the corresponding upper surface of slot 3 in device 2.
FIG. 2 shows the back rest 1 from behind. The adjustable and locking device 2 is fastened to the back with a hinge 6. The device 2 has a locking slot 3, which locks the adjustment when the device is turned on hinge 6 to its locking position. No. 5 points out the place where there is a slot on the back rest which makes it possible to place the back directly down onto the armrests or to lift it up and remove the whole back from the armrests.
FIG. 3 is the same as FIG. 2 but the adjusting and locking
REFERENCES:
patent: 2645788 (1953-07-01), Knoll et al.
patent: 3855646 (1974-12-01), Glickman
patent: 4447920 (1984-05-01), Rosen
patent: 4570998 (1986-02-01), Hughes
patent: 4728150 (1988-03-01), Gaudreau, Jr.
patent: 4763952 (1988-08-01), Gaudreau, Jr.
patent: 5038422 (1991-08-01), Messina
patent: 5067187 (1991-11-01), Messina
Dorner Kenneth J.
Jr. Milton Nelson
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