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:
Jun. 13, 1989
Filed:
Dec. 01, 1987
Nobuaki Kondo, Yokohama, JP;
Shinichi Yamazaki, Kanagawa, JP;
Nissan Motor Co., Ltd., Yokohama, JP;
Toyo Tire & Rubber Co., Ltd., Osaka, JP;
Abstract
A seat cushion with compression characteristics which differ by portions including an upper layer portion, which is made of a low hardness foamed body and forming an entire surface of the seat, and a lower layer portion, which is made of a high hardness foamed body and supporting the upper layer portion, the upper and lower layer portions being soft composition polyurethane foamed bodies and molded in a same foaming mold to form an integral body with a strong boundary portion formed along their interface. A basic profile of the upper layer portion is a sloped plane with its height increased toward a front, edge, in the longitudinal direction, while that of the lower layer portion corresponds to a sitting posture of a human body occupying the seat. In a hind seat portion, a thickened portion is provided for the entire surface in a transverse direction by thickening the low hardness foamed body into having a cross section of a concaved arc form in the longitudinal direction by approximating the sitting posture line of a buttocks. In a front seat portion, on either a right or left side, the upper layer portion is made thicker than the basic profile by gradually increasing its thickness toward the front edge in sloped form, in the longitudinal direction, with this thickened portion shaped into a circular arc form in the transverse direction.