Chairs and seats – Armrest – Mounted to structure other than a chair or seat component
Patent
1996-12-27
1998-06-16
Cuomo, Peter M.
Chairs and seats
Armrest
Mounted to structure other than a chair or seat component
29741122, 29741138, 29741132, 29741136, 248118, 2482851, 2482861, A47C 754
Patent
active
057659192
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD
The present invention relates to an adjustable arm-rest intended preferably for toilet, or lavatory seats. The arm-rest includes an arm-rest part and a frame-part, wherein the arm-rest part is displaceable in the vertically extending frame-part and is self-locking in its adjusted position, and wherein the frame-part is pivotally adjustable.
DESCRIPTION OF TEE BACKGROUND ART
Adjustable arm-rests are common features of toilet seats for handicap toilets, and facilitate the use of such toilets for handicapped persons, as evident from SE-C-372 223 for instance. In this latter case, a vertically displaceable arm is balanced with the aid of a counterweight, which is connected to an arm-part that projects into a frame-part, by means of a line which runs over guide rollers. The provision of this balancing arrangement requires a relatively large amount of space in the vertical frame-part and also results in slightly unstable journalling of the arm, this instability being noticeable even when the arm is in its arrested vertical position.
Although this instability has been avoided by providing the inner end of the arm with a transversely extending wing or plate (see SE-C-465 997), the arrangement required herewith renders the construction relatively complicated and expensive. Furthermore, no solution has been proposed with regard to the space-requiring problem of the balancing arrangement, and the vertical frame-part consequently has large cross-sectional dimensions. The work involved in fitting the arm-rest is also highly tile-consuming in the case of the known balancing arrangement. Pivotal arm-rests are known from SE-C-464 165. a foot plate provided with two locking shoulders mounted forwardly of the frame-part are intended to coact with a locking pin which is maneuvered with the aid of a pull rod mounted externally on the front side of the frame-part. Although this type of locking arrangement has been found satisfactory, it is encumbered with the drawback of occupying an excessively large amount of space. Another drawback is that the known arrangement is difficult to keep clean and the maneuvering ball is difficult to reach in the case of some users. A journal pin and a journalling sleeve mounted behind the frame-part further amplifies the drawbacks of the known an-rest.
SUMMARY OF THE INVENTION
With the intention of providing an arm rest which can be readily adjusted vertically and laterally and intended, for instance, for a toilet or lavatory seat, and which has but few movable parts, there is provided a positionally adjustable arm-rest which includes an arm-rest part and a frame-part, wherein one end of the arm-support part is inserted together with two surrounding slide blocks into the frame-part such as to enable said arm-support part to be retained in its raised or lowered position. The slide blocks are provided on their bottom edges with a respective spring-accommodating opening, and the arm-rest part is constructed so that the slide blocks are able to secure the arm-rest in a horizontal position and to retain said arm-rest in said position when essentially no load acts on the arm-rest. The end of the arm-rest also includes a pressure surface which acts against the inner surface of the frame-part so that the arm-rest will not give way when subjected to load. A reinforcement plate may be placed between said end of the arm-rest and the inner surface of the frame-part so as to reduce the effect of pressure by distributing the pressure onto the inner surface of the frame-part, without damaging said inner surface. This construction enables the user to readily adjust the position of the arm-rest. All that is required in this regard is for the user to grip the arm-rest part and swing it slightly upwards while moving the same to the position desired. The only resistance that need be overcome is that which corresponds to the holding force of the two slide locks. When the end of the arm-rest has been moved to the height desired, the arm-rest part is released and swung back. The arm-rest part ca
REFERENCES:
patent: 2560791 (1951-07-01), Fincher et al.
patent: 3625563 (1971-12-01), Dickinson et al.
patent: 4707032 (1987-11-01), Chang
patent: 4907835 (1990-03-01), Salters
Carlsson Carl-Erik
Carlsson Pervi
Karlsson Goran
Barfield Anthony D.
Cuomo Peter M.
FeAl AB
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