Patent ID: 7635050

Claim:
An electric brake assembly comprising: an electric motor including a rotary member; a linearly movable member; a first brake member coupled to said linearly movable member; a second brake member; a driving force conversion mechanism for converting a rotary motion of said rotary member to a linear motion of said linearly movable member in forward and backward directions, said forward direction being such a direction that said first brake member is moved toward and pressed against said second brake member, said backward direction being such a direction that said first brake member separates from said second brake member; and a one-way clutch that allows the linear motion of said linearly movable member in said forward direction and restricts the linear motion of said linearly movable member in said backward direction; wherein said rotary member is a cylindrical member; wherein said driving force conversion mechanism comprises a thread mechanism provided on a radially inner surface of said cylindrical rotary member; wherein said linearly movable member extends through said cylindrical rotary member and is coupled thereto through said thread mechanism; wherein said forward and backward directions are parallel to an axis of said cylindrical rotary member; and wherein said one-way clutch is rotatably mounted on said linearly movable member and structured to restrict the linear motion of said one-way clutch in said backward direction relative to said cylindrical rotary member and allow the linear motion of said one-way clutch in said forward direction relative to said cylindrical rotary member, by axially engaging said radially inner surface of said cylindrical rotary member while moving in an axial direction.