Abstract: An illumination measuring device for panoramic picture taking has a first photoelectric illumination intensity receiver which diffusely determines light falling in a first measuring region and illuminating a first panoramic portion, at least one further photoelectric illumination intensity receiver which diffusely determines light falling in a second measuring region and illuminating a further panoramic portion, and an evaluating unit determining a deviation of an illumination intensity determined by the further illumination intensity receiver from an illumination intensity determined by the first illumination intensity receiver.

Abstract: A panoramic camera has a camera housing having a cylinder segment provided with an image window, an objective drum which is rotatable relative to the cylinder segment about a rotary axis, the cylinder segment having segment flanks located laterally near the image window, the segment flanks being provided with light catching grooves extending parallel to the rotary axis of the objective drum and ending at an angular distance from the outer edges of the cylinder segment, covered by a curvature of the drum.

Abstract: An elastic damper of a clutch disc comprises a middle disc and two side discs. Helical compression springs are accommodated in overlapping windows of the middle disc and the side discs. The angular deflection of the side discs with respect to the middle disc is limited by a radially outer projection of the middle disc engaging recesses in axially approached lugs of the side discs projecting beyond the radially circumferential edges of the side discs.

Abstract: In a clutch disk, particularly for a motor vehicle clutch, the annular friction linings are mounted on a carrier disk by a plurality of pairs of leaf spring elements which are distributed along a peripheral zone of the carrier disk. The leaf spring elements comprise fixing portions. The fixing portions of the leaf spring elements of respective pairs of leaf spring elements rest against each other and are commonly fixed to the peripheral zone. Further the leaf spring elements comprise lining carrying portions, which are fixed to the friction linings. The lining carrying portions of the leaf spring elements of respective pairs of leaf spring elements have an uneven configuration such that only first partial areas of the lining carrying portions abut each other, whereas second partial areas of the lining carrying portions are spaced from each other in axial direction when in the unloaded condition.

Abstract: In a clutch disc assembly, a hub disc extends outwardly from a hub and a cover disc is provided on each side of the hub disc. The cover discs are angularly movable about the axis of the hub between a neutral position and a pair of terminal positions each spaced on an opposite side of the neutral position. Groups of aligned windows are provided through the hub disc and the cover discs with the windows extending in the circumferential direction around the hub axis. A compression spring extends in the circumferential direction about the hub axis and is located within each group of aligned windows. The compression spring functions as a torsion spring operatively interconnecting the hub disc and the cover discs for resisting angular movement from the neutral to the terminal positions. A plurality of friction units are located between the hub disc and the cover discs and the friction units have different torque values.

Abstract: A driven plate for an automotive friction clutch having a hub unit and a disc unit rotatable on the hub unit and carrying the friction facings of the clutch is equipped with helical compression springs simultaneously received in respective openings of a hub flange and of two discs of the disc unit along a common circle about the clutch axis for damping relative motion of the two units. The two discs are axially fixedly connected by shoulder rivets which act as spacers and pass through openings in the hub flange also receiving respective damping springs.