Abstract: Vibration damper, including a piston rod, axially movably guided in a work cylinder, with a piston, wherein the work cylinder is closed at the end by a piston rod guide, and the vibration damper has a securing device during an assembly process so that at least a length portion of the piston rod passes through the piston rod guide. The securing device is formed by a supporting ring that is guided axially displaceably in the work cylinder and, in the fully assembled vibration damper, assumes an axial position inside the work cylinder in a length region which is delimited on one side by the piston and on the other side by a base part of the work cylinder.

Abstract: A spring plate arrangement for vibration damper with damper tube, with spring plate for supporting a suspension spring, the spring plate having a contact portion circumferentially contacting a circumference of the damper tube, a receiving portion adjoining the contact portion via a shoulder and radially spaced from damper tube to form an annular space, and a supporting portion adjoining receiving portion for axially supporting the suspension spring, with a retaining ring for securing spring plate at the damper tube in an axial direction AR. The damper tube has a receiving groove arranged inside the annular space and where retaining ring is received. The retaining ring has at least one radially protruding clamping contour at its circumference which cooperates with the receiving portion in an engaging manner to secure the spring plate against rotation.

Abstract: A vibration damper having a hydraulic compression stop includes: a cylinder filled with a damping medium; a piston rod guided in the cylinder the cylinder having a first piston fastened to the piston rod and slidable on an inner wall of the cylinder; and a second piston arranged on the piston rod at an axial distance from the first piston the second piston being slidable in a pressure cylinder. The pressure cylinder is formed with respect to the cylinder by a separate plastic pressure sleeve having a bottom, and the bottom of the pressure sleeve and a coating surface of the base on a side of the base facing away from the pressure sleeve are connected to each other via at least one web.

Abstract: An integrated module frame and racking system for a solar panel is disclosed. The solar panel comprises a plurality of solar modules and a plurality of splices for coupling the plurality of solar modules together. The plurality of splices provide a way to make the connected modules mechanically rigid both during transport to the roof and after mounting for the lifetime of the system, provide wiring connections between modules, provide an electrical grounding path for the modules, provide a way to add modules to the panel, and provide a way to remove or change a defective module. Connector mount assemblies are provided on the sides of the modules to simplify the electrical assembly of modules when the modules are connected together with splices and to simplify the final connection of external wiring to the module.

Abstract: An improved sense amplifier circuit for a Random Access Memory (RAM) having 1-transistor memory cells which is completely dynamic in that it does not dissipate D.C. power during operation and is suitable for location at one end of a memory cell array. The trip-point voltage of the sense amplifier is controlled by a pair of capacitances. When the Random Access Memory (RAM) is fabricated as an integrated circuit these control capacitances are so structured and processed that the trip-point voltage tracks with the sense amplifier input signal voltages over a wide range of manufacturing process parameter variations.