Abstract: An apparatus for controlling stacking of a load by a crane estimates a periodical displacement of a horizontal position of a tool. A speed with which the tool descends is controlled such that the tool or a load held by the tool lands on a desired position when the amplitude of the periodical displacement becomes maximum.

Abstract: A fluid coupling is provided between a pump shaft of a water pump and a water pump pulley and includes a liquid chamber formed inside housings and filled with a fluid, and a rotor fixed to the pump shaft and housed in the liquid chamber. When the housings connected to a crank pulley via an endless belt rotate, the rotor is dragged by the viscosity of the fluid and the pump shaft rotates. Since the fluid coupling has the property of decreasing the rate of increase in the output rotational speed of the fluid coupling as the input rotational speed increases, the required rotational speed of the water pump can be guaranteed when the rotational speed of the engine is low, and the water pump can be prevented from rotating excessively when the rotational speed of the engine is high.

Abstract: The hybrid connector (1) is completed through first to third assembling steps. The first assembling step inserts sleeves (7, 7) into cylindrical holders (19, 19) to an intermediate insertion state thereof. The second assembling step presses optical element modules (8, 9) against the sleeves (7,7), which consistently further inserts the sleeves (7, 7) into the cylindrical holders (19,19) so that the sleeves (7, 7) are completely received in the cylindrical holders (19, 19). Whereby the second assembling step simultaneously completely assembles the sleeves (7, 7) and the optical element modules (8, 9) into the connector. This provides an effective assembling work thereof. The third assembling step causes a shield case (10) to hold the optical element modules (8, 9), while the shield case 10 engages with the cylindrical holders 19, 19.