Seat reclining device

A seat reclining device comprising:

• a first arm supported by one of a seat cushion and a seat back;
• a second arm supported by the other of the seat cushion and the seat back, the second arm being rotatably supported with respect to the first arm;
• the first arm possessing a first annular recessed portion having an inner diameter;
• the first annular recessed portion having a circumferentially extending inner periphery at which is provided a first inner toothed portion, the first inner toothed portion extending along at least a portion of a circumferential extent of the inner periphery of the first annular recessed portion;
• the first arm possessing a second annular recessed portion having an inner diameter different from the inner diameter of the first annular recessed portion;
• the second annular recessed portion having a circumferentially extending inner periphery at which is provided a second inner toothed portion, the second inner toothed portion extending along at least a portion of a circumferential extent of the inner periphery of the second annular recessed portion;
• a plurality of pawls positioned between the first and second arms, each of the pawls possessing a first outer toothed portion and a second outer toothed portion, the first outer toothed portion and the second outer toothed portion of each pawl being offset from one another;
• the first outer toothed portion on each pawl being engageable with the first inner toothed portion to rotatably fix the first and second arms relative to one another;
• and
• the second outer toothed portion on each pawl being engageable with the second inner toothed portion.

A seat reclining device comprising:

• a first arm supported by one of a seat cushion and a seat back;
• a second arm supported by the other of the seat cushion and the seat back, the first and second arms being supported for relative rotation about a rotational axis;
• the first arm being provided with an annularly arranged first inner toothed portion centered on the rotational axis;
• the first arm being provided with an annularly arranged second inner toothed portion centered on the rotational axis, the second inner toothed portion being spaced from the rotational axis by a radial distance different from the radial distance between the first inner toothed portion and the rotational axis;
• a pawl slidably positioned between the first and second arms for slidably moving towards and away from the rotational center;
• the pawl possessing a first outer toothed portion and a second outer toothed portion;
• the first outer toothed portion of the pawl and the second outer toothed portion of the pawl being offset from one another;
• and
• the first outer toothed portion on the pawl being engageable with the first inner toothed portion and the second outer toothed portion on the pawl being engageable with the second inner toothed portion.