Patent ID: 7198406

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 adapted to be filled in said closed recess, said projections including at least an inner annular projection located on an inner peripheral side, an outer annular projection located radially outwardly of said inner annular projection and disposed concentrically with said inner annular projection, and a plurality of radial protrusions extending radially and connected to respective ones of said inner annular projection and said outer annular projection.