| 摘要 |
917,526. Variable-speed gear. FORD MOTOR CO. Ltd. April 14, 1961 [April 14, 1960], No. 13547/61. Class 80 (2). [Also in Group XXIX] In a variable-speed friction gear of the kind in which intermediate sets 94, 96 of coned discs carried by radially adjustable countershafts 98 engage sets of concentric driving and driven discs 50, 78, the discs are pressed axially into engagement by hydraulic annular pistons 62, 86, a centrifugal valve 142 being provided to eliminate centrifugal pressure build-up due to rotation of the operating liquid in casing 68. Piston 62 is supplied with pressure liquid from an axial passage in the drive-shaft through radial passages 64, while piston 86 is supplied through passages 134, 138, 150, 148, 152. The valve 142 is loaded by a spring 144 and controls a port 154 between passages 148, 152, and also an exhaust port 156 in communication with passage 152. Conjoint adjustment of shafts 98 is effected by an automatically-controlled fluid pressure actuator 120 connected to a lever 118 carrying a toothed sector 106 which rotates a gear-wheel 114 engaged by similar toothed sectors 106 operating arms 108 carrying the shafts 98. |
