| 摘要 |
1,259,290. Change speed gear control. SUNDSTRAND CORP. 23 Dec., 1968 [27 Dec., 1967], No. 5243/71. Divided out of 1,259,289. Heading F2D. This Specification has the same disclosure as Specification 1,259,289 but the claims relate to delaying engagement of the clutch (55), Fig. 2 (not shown), until the elements thereof are synchronized. This preferably involves a valve 180 comprising coaxial members 189, 190 rotating with the parts to be synchronized, and between them a member 191 with a lost motion connection 192 to the member 190, and a frictional connection 199 to the member 189. When the direction of relative motion between members 189 and 190 changes the member 191 moves relative to the member 190 changing the connection of a conduit 185 between a pressurized line 327 and a vented line 195. Thus when changing from low ratio to high ratio in the gearing disclosed, line 185 becomes pressurized arresting movement of the swash-plate (115) via lines (187, 177, 178). A resulting pressure increase in a line (327a) moves the lockout valve (134) supplying fluid from line 185 via line (188) to the shift valve (132) initiating the ratio change. |
