Abstract: The invention relates to a vehicle composite test apparatus in which various tests of a vehicle are carried out with the tires placed or fixed on support bases and serving as means to be detected or measured. In particular, the invention provides a vehicle composite test apparatus in which the vehicle center line Lc and the measurement reference line Ls can be easily and automatically aligned. In order to further enhance the operation of the apparatus, the invention also provides a parallel moving mechanism constituted such that a pair of moving platforms onto which the vehicle may be advanced, can be smoothly moved in parallel with precision, a tire guide apparatus for guiding tires precisely to desired tire measurement positions on said test apparatus, and a lock mechanism capable of easily and positively locking a pair of active juxtaposed rollers arranged at the tire measurement positions against rotation.

Abstract: The invention relates to a vehicle composite test apparatus in which various tests of a vehicle are carried out with the tires placed or fixed on support bases and serving as means to be detected or measured. In particular, the invention provides a vehicle composite test apparatus in which the vehicle center line Lc and the measurement reference line Ls can be easily and automatically aligned. In order to further enhance the operation of the apparatus, the invention also provides a parallel moving mechanism constituted such that a pair of moving platforms onto which the vehicle may be advanced, can be smoothly moved in parallel with precision, a tire guide apparatus for guiding tires precisely to desired tire measurement positions on said test apparatus, and a lock mechanism capable of easily and positively locking a pair of active juxtaposed rollers arranged at the tire measurement positions against rotation.

Abstract: A roller clamp type wheel examining apparatus includes a support for supporting thereon a wheel of a vehicle to be examined, a plurality of rollers for clamping the wheel supported on the support from both sides thereof and an angle detector for detecting the angle of orientation of the wheel when clamped by the plurality of rollers. The wheel of a vehicle clamped by the rollers on both sides thereof may be driven to rotate around its own rotating axis to thereby examine dynamic characteristics of the wheel. In this case, the support structure should, for example, include a pair of support rollers for supporting thereon the wheel to be examined in a rotatable manner. The support may include a floating table having a flat top support surface and movable in a horizontal plane translationally as well as rotationally, in which case only the dynamic characteristics of the wheel may be examined since the wheel is not rotatable around its rotating axis.

Abstract: A roller clamp type wheel examining apparatus includes a support for supporting thereon a wheel of a vehicle to be examined, a plurality of rollers for clamping the wheel supported on the support from both sides thereof and an angle detector for detecting the angle of orientation of the wheel when clamped by the plurality of rollers. The wheel of a vehicle clamped by the rollers on both sides thereof may be driven to rotate around its own rotating axis to thereby examine dynamic characteristics of the wheel. In this case, the support structure should, for example, include a pair of support rollers for supporting thereon the wheel to be examined in a rotatable manner. The support may include a floating table having a flat top support surface and movable in a horizontal plane translationally as well as rotationally, in which case only the dynamic characteristics of the wheel may be examined since the wheel is not rotatable around its rotating axis.

Abstract: A dielectric ceramic composition for high frequencies comprises a main component of a TiO.sub.2 -ZrO.sub.2 -Sn.sub.2 O system and contains, as additives, not more than 7 wt % of ZnO, not more than 10 wt % of NiO, and not more than 7 wt % of one metal oxide selected from the group consisting of Nb.sub.2 O.sub.5, Ta.sub.2 O.sub.5, WO.sub.3 and Sb.sub.2 O.sub.5. The main component consists essentially of 22 to 43 wt % of TiO.sub.2, 38 to 58 wt % of ZrO.sub.2, and 9 to 26 wt % of SnO.sub.2.