Image Number 4 for United States Patent #6892868.
A one-way clutch includes a retainer (3), a spring (4) guided by the retainer, and sprags (5) which are pivotally provided in respective pockets of the retainer and respective pockets of the spring. A rounded section (4c) is formed on an outer diameter side of each of tongue-like flaps (4t) of the spring. Guide sections (3c, 3c) are formed at respective corners on one side of each pocket with respect to a circumferential direction thereof. The width (D) of a space between the guide sections is set so as to become greater than the width (T) of each of the tongue-like flaps formed in the spring, and the rounded section (4c) is housed in the space between the guide sections.