The seat reclining device is structured that a first circular shaped concave portion is formed in the first arm and a second concave portion which is concentric with the first concave portion is formed in an inner surface of the first concave portion respe...

Seat reclining devices for a vehicle seat may include a first seat reclining mechanism (10) having a first rotational shaft (18) and a second seat reclining mechanism (60) having a second rotational shaft (62). A connector sleeve (34) may interconnect or c...

A reclining device including a recess formed as a low-rigidity portion in a lateral portion of each of slide pawls 15 which faces a lateral wall surface of a guide groove of a stationary disc 11(the lateral wall surface of a bearing wall portion 11d). The ...

It is possible to set a free zone and use a greater number of pawls (15) in a reclining device having a plurality of pawls (15A, 15B, 15C, 15D) even if an angular range where a certain pawl (15A) is out of mesh with a ratchet (12c) and an angular range whe...

A reclining apparatus (20) is provided with a fixed plate (21) having guide portions (41, 42), a shaft (30), a rotary plate (22) having an internal gear (66), slide gears (70, 71), a cam member (72) and the like. The cam member (72) has a pair of hook port...

A first supporting member (10) supports a first seat member. A second supporting member (60) supports a second seat member rotatable relative to the first seat member. An angular restrictor (80, 90) is provided between the first and the second supporting m...

A seat reclining apparatus has a base member (1) adapted to be secured to a seat member, substantially rounded, formed with a pair of first and second guide walls (9a,9b), and having an external periphery; a rotary arm (2) rotatably supported on the base m...