| 摘要 |
1536104 Adjustable seat backs BRUGGER METALCRAFT Ltd 29 March 1977 [28 May 1976] 13227/77 Heading A4J [Also in Division E2] A seat adjusting mechanism comprises a base plate 10, a seat back member 13 hinged thereto and having a toothed rack 15, a pawl 17 hinged to the base-plate and having teeth 18 for engagement with rack 15, a cam 19 which when turned anticlockwise disengages the pawl and when turned clockwise engages the pawl, and a handle 27 having a slot 28 which engages lug 23 on the cam to operate the cam, the meshing between the teeth 18 and rack 15 being such that the pawl may only be disengaged when less than a predetermined meshing force exists between the teeth 18 and rack 15. |
