Beds – Bedclothing – And means to facilitate changing thereof
Patent
1991-10-02
1992-12-22
Trettel, Michael F.
Beds
Bedclothing
And means to facilitate changing thereof
5462, 5481, 5901, A47C 2715
Patent
active
051724367
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD
The present invention relates to a mattress cushion, which is used for a mattress or a bed.
TECHNICAL BACKGROUND
A conventional mattress cushion as a bed is constructed such that a number of coil springs are fixed to a metal frame under the both surfaces, overlaid by sheet materials respectively on upper and lower sides and covered by cloth entirely.
In such a kind of mattress, however, since a metal frame and a number of coil springs are incorporated, the gross weight becomes greater and handling is inconvenient. Also, the coil springs and metal frame are not only prominent causes of rust but also for breakage of the sheet material and the cover cloth, negatively affecting the durability of the mattress and the user's comfort.
Moreover, in this kind of bed mattress, as importance is laid only on how to support the body stably, the function of improving health is hardly considered,
It is the object of the invention to provide a light-weight mattress and improve the durability of the mattress, by forming a mattress cushion, particularly for a bed, without using a metal component such as a coil spring.
It is another object of the invention to improve the durability of the mattress cushion, the user's comfort and the health of the user by employing a core portion with a special structure.
DISCLOSURE OF THE INVENTION
The invention relates to a mattress cushion having an elastic mattress body covered throughout its periphery by a cover, and formed with the core portion consisting of synthetic resin moldings having rigidity and an elastic surface layer, overlaid on both sides of the core portion sandwiched between them. The said core portion is formed with vertical side-walls at regular intervals and horizontal upper-end walls and lower-end walls connected mutually between the upper-end and the lower-end of the vertical side-walls side by side. Also, the convex part extending up and down are formed at regular intervals on the said vertical side-walls.
In reference to the invention, since a metal member such as a coil spring is not used, the whole mattress is light and easy to handle, and also rusting and breakage of the cover cloth does not occur, thus the durability of the mattress and user's feeling are not comprised.
Furthermore, since the whole mattress is comprised of the core portion of synthetic resin moldings which are rigid and the core portion is formed with a special structure, it is not subject to breakage or deformation by an external force, improving the durability. Also, since the core portion has the function of preventing the body from sinking down, the body may be supported in its natural form, and thus a quiet sleep is insured.
Also, the core portion has a hollow structure, which is good for ventilation and damp-proofing to improve the user's feeling and health with the function of keeping the natural form of the body.
BRIEF DESCRIPTION OF THE INVENTION
FIG. 1 is a perspective view showing a mattress cushion for a bed with a partly broken cover according to one embodiment of the present invention,
FIG. 2 is a sectional view taken along the line A--A of FIG. 1,
FIG. 3 is a perspective view showing a lamination structure of a mattress body, each of the layers being broken,
FIG. 4 is a perspective view showing a enlarged core portion,
FIG. 5 is a sectional view showing an enlarged second cushion layer,
FIG. 6 is a perspective view of a mattress cushion for a bed with a cover partly broken according to another embodiment of the invention,
FIG. 7 is as perspective view of a mattress cushion for laying our on the floor, with a cover and a surface layer partly broken according to another embodiment of the invention,
FIG. 8 is a sectional view taken along the line B--B of FIG. 7.
BEST MODE FOR CARRYING OUT THE INVENTION
FIGS. 1 and 2 show a mattress cushion for a bed according to one embodiment of the invention constructed such that the entire periphery of an elastic mattress body 1 is covered by a cloth cover 2.
The mattress body 1, as shown in FIGS. 2 and 3, is composed
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patent: 4122568 (1978-10-01), Bastos et al.
patent: 4143435 (1979-03-01), Masuda
patent: 4498477 (1985-02-01), Masuda et al.
patent: 4509219 (1985-04-01), Yagi
patent: 4580301 (1986-04-01), Ludman et al.
patent: 4924542 (1990-05-01), Yamaguchi
patent: 4999868 (1991-03-01), Kraft
Nihonkenkozoshinkenkyukai Co., Ltd.
Trettel Michael F.
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