Beds – Bedsteads – Having bottom
Patent
1985-05-30
1987-02-24
Grosz, Alexander
Beds
Bedsteads
Having bottom
5191, 5237, A47C 2306
Patent
active
046445960
DESCRIPTION:
BRIEF SUMMARY
The invention relates to the field of sitting and lying furniture, particularly beds. The prior art in this field is presently unsatisfactory in several respects. The main criteria for the quality of a bed can be looked upon as hygiene, orthopedics, handiness and biology. The requirements regarding optimum construction and the prior art are subdivided hereinafter on the basis of these criteria.
BACKGROUND OF THE INVENTION
Hyqiene
A good bed must be able to breath, i.e. the removal of the moisture (approximately 2 to 5 dl per night) given off by the human skin when sleeping must not be impeded by moisture-impermeable layers. Thus, during its use period the lying surface is permeated by the waste substances and bacteria given off with the moisture. It has therefore been necessary to clean the breathing-active parts of the bed, particularly after a bed has been used by a sick person or in hospitals and hotels in which several people successively use the same bed. This is only possible to a limited extent with the presently used lying surface constructions, because the mattresses, which are usually very large, cannot be cleaned or can only be cleaned with considerably difficulty. As a result, e.g. in hospitals, moisture-impermeable layers of plastic or the like are by sheer necessity placed on the mattress to prevent the penetration of infectious germs. This stops the breathability of the mattress and the bed user must lie on the resulting moisture deposits, which leads to bed sores in patients. In the home, mattresses are generally not cleaned throughout the period of use which can be several decades. The same problem occurs in hotels where, in addition, beds are used by various people. The need thus becomes apparent for a mattress made in such a way that it can be easily cleaned, preferably by the user.
Orthopedics
A good lying surface must be such that the human body is supported in an optimum manner in its normal sleeping position (on the back, side or stomach) and consequently remains in a relaxed state. The requirements concerning the design of this lying surface are dependent on the weight, size, sleeping position and possible anatomical peculiarities (particularly the vertebral column) of the persons using the bed and cannot therefore be easily standardized. Account must also be taken of subjective wishes of the user such as the preference for a harder or softer support. Thus, the lying surface must be adaptable to the individual user. This is possible to a limited extent at present only if the person in question is in a position to pay for the expensive individual production of a custom-made lying surface. Although reasonably priced designs often permit individual adjustment possibilities, they far from fulfill the aforementioned requirements. They are also mainly designed for persons who sleep on the side and back, ignoring the fact that a large percentage of the population sleep on the stomach and require a quite different lying surface design. The need thus becomes apparent to make these possibilities available with simple means for the normal citizen.
A further criterion is the fact that many of the available lying surfaces lose their elasticity and springiness and consequently their original shape after a few years of use and that it is only possible to make good this deficiency, i.e. restore the initial elasticity, shape and springiness by incurring considerable expenditure or not at all. Thus, the ideal solution would be to provide a design enabling the user to eliminate this problem caused by material deformation and fatigue by using simple means.
Handiness
All existing lying surfaces with at least an average lying quality have a relatively high weight. Particularly in the case of French beds, it is often impossible for housewives and older people to move the lying surfaces, so that it would be appropriate to provide a lightweight, easily handlable design.
Bioloqy
A steadily increasing number of people are of the opinion that, as a result of body influences when sleeping, all me
REFERENCES:
patent: 4567615 (1986-02-01), Fantl
Farley Walter C.
Grosz Alexander
Liform AG
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