Abstract: The invention relates to a fluid delivery device (2, 2?) for delivering a fluid into a human or animal body. The fluid delivery device (2, 2?) comprises a fluid chamber (4, 4?) for receiving a fluid, an oscillator (6, 6?) for imparting oscillations to at least a portion of the fluid and a control for controlling the oscillator (6, 6?). The oscillator (6, 6?) comprises a vibrator (8, 8?) and a resonator (10, 10?). The resonator (10, 10?) has a main body (12, 12?), defining an interior volume (14, 14?), and a neck (16, 16?). The neck (16, 16?) is connected to the main body (12, 12?) and in fluid communication with the interior volume (14, 14?). The vibrator (8, 8?) is configured to impart vibrations to the resonator (10, 10?). The control is configured to control operation of the vibrator (8, 8?) so as to impart vibrations to the resonator (10, 10?) at a resonance frequency of the resonator (10, 10?) or at a frequency which is within ±20% of a resonance frequency of the resonator (10, 10?).

Abstract: A tensioning rail for an endless drive, in particular a timing chain drive of an internal combustion engine, comprises a sliding lining body and a reinforcement body inserted in the sliding lining body and connected thereto by a detent connection, the sliding lining body comprising a slide rail for contact with an endless drive and a press-on region for the tensioning piston of a tensioning device. The tensioning rail is characterized in that the press-on region is arranged in a resiliently movable fashion on the slide rail and comprises a detent device as a constituent part of the detent connection such that the detent device is adapted to be locked due to the resilient movement of the press-on region. An endless drive having a tensioning rail of the type disclosed is also provided.

Abstract: A tensioning rail unit for an endless drive, comprises a tensioning rail arranged for pivoting about a pivotable arrangement and a tensioner acting on the tensioning rail and including a housing and a tensioning piston guided in the housing, wherein the housing has an arm having attached thereto a first element of the pivotable arrangement, the tensioning rail has attached thereto a second element of the pivotable arrangement, and the first and second elements are adapted to be mounted at a mounting position by means of a plug-in movement and to be transferred to a locked operating position by means of a subsequent pivoting movement.

Abstract: A tensioning rail for an endless drive, in particular a timing chain drive of an internal combustion engine, comprises a sliding lining body and a reinforcement body inserted in the sliding lining body and connected thereto by a detent connection, the sliding lining body comprising a slide rail for contact with an endless drive and a press-on region for the tensioning piston of a tensioning device. The tensioning rail is characterized in that the press-on region is arranged in a resiliently movable fashion on the slide rail and comprises a detent device as a constituent part of the detent connection such that the detent device is adapted to be locked due to the resilient movement of the press-on region. An endless drive having a tensioning rail of the type disclosed is also provided.