Automotive seat with heating device

Claim 1

An automotive seat with a heating device, comprising: a foam cushion member; a recessed portion formed in a bottom of said cushion member; a foam block member inserted in said recessed portion, said foam block member being formed independently of said cushion member; a heating device provided on an upper surface of said block member such that said heating device is securely disposed between an inner surface of said recessed portion of said cushion member and said upper surface of said block member; a frame provided in said seat; a support means extended in said frame for supporting said foam cushion member and said block member, and a trim cover assembly affixed over an upper surface of said cushion member, such that an end of said trim cover assembly is anchored to said frame; said heating device includes a cover sheet and a heating element covered with said cover sheet, wherein said sheet has four apertures perforated therein such that said four apertures are respectively disposed at each of four corners of said cover sheet, and wherein said block member is formed at its upper surface with four projected pieces such that said four projected pieces are respectively disposed at each of four corners of said upper surface of said block member, with such arrangement that said four projected pieces are in alignment with the respective said four apertures, whereby said heating device is secured on said upper surface of said block member by inserting said projected pieces through said apertures.