Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Yumi Ogura0
Katsuya Ibaraki0
Seiji Kawasaki0
Shunichi Doi0
Eiichi Yasuda0
Etsunori Fujita0
Date of Patent
November 14, 2006
0Patent Application Number
104227650
Date Filed
April 25, 2003
0Patent Primary Examiner
Patent abstract
An upper end portion of a seat backrest and a lower end portion of a head rest are superposed together. A rear end portion of an upper portion cushion member and a lower end portion of the seat backrest are superposed together. These superposed portions are sewn together by thin threads which break when pressing force of a predetermined value or greater is applied to the seat backrest. Thus, when pressing force of the predetermined value or greater is applied to the seat backrest, the thin threads break. A portion of the seat backrest which a shoulder portion of a seated occupant contacts, and a portion of the seat backrest which buttocks of the seated occupant contact, are enlarged, and impact force can be damped.
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