A manufacturing method of an anti-corrosive multi-layered structure material having an anti-corrosive non-metallic surface layer formed on a metallic substrate layer, wherein non-electrolytic plating of an anti-corrosive metal different in ionization prope...

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 ...

A reclining device including leg portions (15c, 15d) formed in opposed end portions of each of slide pawls(15). Basically, a rotating cam (16) bears the slide pawl (15) at a middle bearing portion (15f) formed in a middle portion between the leg portions (...

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...

In a seat back frame formed by attaching a spring unit (20) to a frame body (10), the spring unit (20) is easily attached to the frame without performing caulking. A projecting hooked portion (21) is formed in one side of the spring unit, and an insertion ...