Chairs and seats – Movable bottom – Tiltable
Patent
1991-05-10
1993-05-25
Brown, Peter R.
Chairs and seats
Movable bottom
Tiltable
297345, 297408, 297411, 297439, A47C 1022
Patent
active
052133958
DESCRIPTION:
BRIEF SUMMARY
The present invention relates, in general terms, to improvements in adjustable seating means. More particularly, but not exclusively, the invention relates to an improved form of chair assembly which lends itself to ready adjustability in a variety of ways or modes to suit the needs of different users. As such the chair assembly in accordance with the present invention lends itself to usage in a variety of contexts, as for example in commercial offices and the like, and on the domestic scene. For ease of explanation, however, hereinafter reference will be made to an especially preferred usage, namely on the domestic front. It should be realised, however, that the present invention is not to be considered to be in any way limited to such usage. Indeed, the chair assembly in accordance with the present invention is eminently suited to use in a variety of professional contexts, for example in dentist's and doctor's surgeries by chiropractors and the like.
BACKGROUND OF THE INVENTION
Chiropractic experience and medical evidence has shown that the actual physical posture adopted by a person, when either seated or standing, can have a significant influence on the overall comfort, and ultimately the health, of that person. Correct posture, when either standing or seated, will minimise the likelihood of onset of complaints associated with incorrect posture, as for example muscular soreness and tension, etc. In turn, and especially in a work environment, output can be expected to be improved, or at worst more easily maintained at a desired level.
In the past numerous attempts have been made to provide a seating arrangement or chair assembly, in particular, which lends itself to ready adjustability to suit the requirements of any particular user. Almost invariably, however, such prior art arrangements have suffered from the disadvantage in that the degree of adjustability provided is limited and, more importantly, the types of adjustment or adjustability afforded have been even further restricted. In the result the prior art arrangements in general made scant provision for the differing physical or physiological dimensions of all possible or potential users and did not afford adjustability to suit all possible requirements.
By way of further explanation of the above, in any seating arrangement the actual posture adopted by the user is dependent to a significant extent first of all on the physical or physiological requirements of the user, and secondly on the personal whims of such user. To cater for all potential situations it would be necessary to provide for ready adjustment of such parameters as: or member of the chair assembly; for different leg-lengths or preferred knee lengths; to cater for different body lengths and shapes; different body shapes and usage requirements; and depth. aforementioned parameters.
SUMMARY OF THE INVENTION
It is therefore an object of the present invention to provide a chair assembly or arrangement which in itself allows for ready adjustability of all the aforementioned parameters, whereby to cater for the varying requirements of individual users. In such a way an assembly or arrangement can be arrived at which is adapted for in effect universal usage, regardless of the physical or physiological dimensions or the personal whims or requirements of the user.
The invention provides an adjustable seat assembly including a seat; a back-rest pivotally attached to the seat; a head-rest associated with the back-rest and disposed at the upper-most end thereof; arm-rest members disposed on each side of the seat; and a ground-engaging or support assembly connected with the seat. The seat, back-rest, head-rest, arm-rest members and support assembly are all moveable relative to one another whereby to allow the seat assembly to be continuously and selectively adjustable into and between a plurality of operating or in-use configurations to suit different physical and/or physiological requirements of the user. The ground-engaging or support assembly is in the form of a substantially U-shaped ar
REFERENCES:
patent: 4046419 (1977-09-01), Schmitt
patent: 4545614 (1985-10-01), Abu-Isa et al.
patent: 4657305 (1987-04-01), Meiller
Birchall Robin
Korteweg Arie J.
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