The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 12, 1985
Filed:
Apr. 01, 1982
France Bed Co., Ltd., Tokyo, JP;
Abstract
A mattress comprises an upper layer having a number of projections formed integrally on the top surface thereof and a lower layer, the upper and lower layers being formed of foamed plastic capable of being deformed by compressive load and restored. A hygroscopic layer formed of a highly hygroscopic material such as cotton is disposed under the upper layer to absorb water from the upper layer. Between the hygroscopic layer and the lower layer lies a middle layer which has a number of columnar core members arranged parallel to and coupled with one another. The core members are formed from relatively hard foamed plastic. An outer covering covers the upper, hygroscopic, middle, and lower layers. Upper and lower spaces are defined between the middle and hygroscopic layers and between the middle and lower layers, respectively, and communicate each other. The water absorbed by the hygroscopic layer is discharged into the upper and lower spaces, where it is discharged into the open air through the outer covering.