Beds – Bedclothing – And means to facilitate changing thereof
Patent
1990-11-02
1992-08-18
Luebke, Renee S.
Beds
Bedclothing
And means to facilitate changing thereof
5464, 5901, A47C 2715
Patent
active
051387301
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD
The present invention relates to a mattress. Particularly, it relates to a mattress wherein metal component parts such as coiled springs are not incorporated.
TECHNICAL BACKGROUND
Conventionally, the mattress has a structure wherein multiple coiled springs are fixed on the metal frames to both upper and lower sides, and sheeting materials are laid over it, then enclosing the entire body with a covering cloth.
This kind of mattress contains metal frames and multitude of coiled springs, which makes it very heavy and inconvenient to handle. Moreover, coiled springs and metal frames generates rust and gives breakages and damages to the sheeting and covering cloth, often causing a short life of the mattress and bad influence to the comfortableness in the use of the mattress.
Furthermore, in this kind of mattress too much emphasis is placed only to sustaining user's body stably, and attention is barely paid to promoting the users' health.
The present invention avoids using metal components, and by employing rigid foam as the core material and by piling surface layer materials consisting of cushioning materials over the core material, it renders to make the mattress light in weight and long in life, besides improving comfortableness in use of this mattress.
SUMMARY OF THE INVENTION
In a cushioning mattress enclosed in a cover of sheet form for the entire external contour of its main body, said main body of the mattress is constructed of a core material consisting of a rigid foam material of sufficient thickness, protective plates piled on both upper and lower sides of said core material, and surface layer materials piled on the protective plates.
Furthermore, in the mattress in accordance with this invention, at least one of the surface layer materials is formed by piling a second cushioning layer consisting of semi-rigid cushioning material which has an up-and-down surface over the first cushioning material.
The mattress in accordance with this invention uses no metal component parts such as coiled springs and employs rigid foam as the core material in the main body, which contributes to reduce the weight of the mattress, making it convenient to handle. Accompanying no problem of rusting and breaking, the mattress endures a long life, and no bad influence is seen in comfortable use of the mattress.
In addition, since the core material is covered by the protecting plates, there is no risk of the core material being damaged by an external force, making the mattress superior in enduring property. Moreover, as the protecting plates have the function of preventing the user's body from sinking into the mattress, the body is sustained in natural form to assure sound sleeping.
According to the accompanying second invention, the first cushioning layer gives appropriate cushion to the body, and the second cushioning layer sustains the body with contacting spots on its up-and-down level surface, assuring space for excellent ventilation and damp releasing performance to secure comfortable feeling of use. In addition, finger-pressing massaging effect with the projecting parts will affect the body to help good blood circulation to the promotion of health.
BRIEF DESCRIPTION OF THE INVENTION
FIG. 1 is a perspective view of the mattress according to one embodiment of the invention with a part of the cover broken away.
FIG. 2 is a cross-sectional view taken along the line II--II in FIG. 1.
FIG. 3 is a perspective view of all layers constructing the mattress with a part of each layer broken away.
FIG. 4 is a cross-sectional view of the second cushioning layer that is magnified.
FIG. 5 is a perspective view showing a part of the cover broken away of the mattress in accordance with another embodiment of the invention.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
FIGS. 1 and 2 show a mattress relative to an embodiment in accordance with the present invention, wherein the entire external contour of the main body of cushioning mattress being enclosed in cover 2 of sheet form.
As shown in FIG. 2 and 3,
REFERENCES:
patent: 2469084 (1949-05-01), Schenker
patent: 3066928 (1962-12-01), Lawrence
patent: 3118153 (1964-01-01), Hood
patent: 3401411 (1968-09-01), Morrison
patent: 4035853 (1977-07-01), Platter
patent: 4143435 (1979-03-01), Masuda
patent: 4509219 (1985-04-01), Yagi
patent: 4580301 (1986-04-01), Ludman
patent: 4673452 (1987-06-01), Awdhan
patent: 4809375 (1989-03-01), Bull
Luebke Renee S.
Nihonkenkozoshinkenkyukai Co., Ltd.
Saether F.
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