ZF FRIENDRICHSHAFEN AG Patent applications |
Patent application number | Title | Published |
20150035256 | TRAILER COUPLING - A trailer coupling with a ball support and a coupling ball arranged at a free end of the ball support. A coupling ball holder is fitted onto and can rotate on the coupling ball. A locking element is provided on the coupling ball holder by which the coupling ball holder is secured against being inadvertently removed from the coupling ball. An angle measuring device, provided on the coupling ball, comprises sensors which can detect rotation of the coupling ball holder relative to the coupling ball about a rotation axis. The position of the locking element, relative to the coupling ball, can be determined using the sensors. | 02-05-2015 |
20090301242 | HYDRAULICALLY ACTUATED SHIFT ACTUATOR ASSEMBLY - Arrangement of a hydraulically actuated shift actuator, comprising a shift cylinder ( | 12-10-2009 |
20080293543 | DEVICE FOR OPERATING A SHIFTING ELEMENT OF A DRIVE MECHANISM - A device for operating a shifting element of a drive mechanism, having a piston positioned in a piston space to slide between first and second end positions. The piston is operated hydraulically and depends on the hydraulic pressure in the piston space and a force of a resetting mechanism acting on the piston, which opposes the activating force that is equivalent to the hydraulic pressure in the piston space. The transmission capacity of the shifting element is reduced by a force acting on the piston in the direction of the first end position and is increased by a force acting on the piston in the direction of its second end position. The piston is held by a mechanical holder against a force acting on the piston in the direction of the first end position in at least one preset position which is different from the first end position. | 11-27-2008 |