Patent ID: 7357578

Claim:
A thrust sliding bearing comprising: an upper annular body having an annular surface; and a lower annular body having an annular surface opposing the annular surface of said upper annular body and superposed on said upper annular body so as to be rotatable about an axis of said upper annular body; the annular surface of one of said annular bodies being formed of a synthetic resin and being flat, a closed recess surrounded by synthetic resin-made projections abutting slidably against the annular surface of said one annular body being formed in the annular surface of another one of said annular bodies, and a fluid being filled in said closed recess to be in contact with the annular surface of said one annular body, said other annular body having an annular member and an annular piece disposed between said annular member and said one annular body rotatably about an axis of said one annular body with respect to said one annular body, the annular surface of said other annular body opposing the synthetic resin-made annular surface of said one annular body being formed on said annular piece, said projections being formed integrally on the annular surface of the annular piece, which has another annular surface on a reverse side of the annular surface of the annular piece opposing the annular surface of said one annular body, said annular member having a synthetic resin-made flat annular surface opposing the other annular surface of said annular piece, said closed recess being surrounded by said projections such that an area of said closed recess opposing the annular surface of said one annular body is greater than an area of said projections which slidably abut against the annular surface of said one annular body.