Abstract: A dismantling system (automobile dismantling system) 1 of a product for dismantling the product having plural kinds has input means (terminal) 30a, 30b, 40a, 40b, - - - for inputting information of the dismantled product; memory means (a memory device of a host computer 2) for storing the information inputted from the input means 30a, 30b, 40a, 40b, - - - ; lot determining means (means constructed within the host computer 2) for classifying the product into the same kind or the approximately same kind on the basis of the stored product information, and determining a product number as a lot when the number of products of the same kind or the approximately same kind reaches a predetermined number; and dismantling means (automobile dismantling means) 61 for dismantling the product; wherein the product is dismantled by the dismantling means 61 every lot.

Abstract: A dismantling system (automobile dismantling system) 1 of a product for dismantling the product having plural kinds has input means (terminal) 30a, 30b, 40a, 40b, - - - for inputting information of the dismantled product; memory means (a memory device of a host computer 2) for storing the information inputted from the input means 30a, 30b, 40a, 40b, - - - ; lot determining means (means constructed within the host computer 2) for classifying the product into the same kind or the approximately same kind on the basis of the stored product information, and determining a product number as a lot when the number of products of the same kind or the approximately same kind reaches a predetermined number; and dismantling means (automobile dismantling means) 61 for dismantling the product; wherein the product is dismantled by the dismantling means 61 every lot.

Abstract: In a valve operating system for an internal combustion engine, wherein connected and disconnected states of cam followers can be switched over from one to another to change the valve operating characteristic of an engine valve, each cam follower includes a cam follower body having a pair of support walls integrally provided thereon and arranged in parallel to sandwich a roller therebetween, and a hollow roller shaft which is fitted and supported at outer peripheries of its opposite ends in through-bores in the support walls, and which has the roller rotatably carried at its intermediate portion. A first groove is defined in an outer peripheral surface of the through-bore in one support wall to extend circumferentially of the through-bore, and a second groove is defined in an outer peripheral surface of the roller shaft at its one end corresponding to the first groove.

Abstract: A composite core is selected which is formed of a reinforcing fiber and a thermoplastic synthetic resin by a compression molding, and including a first region in which the grammage M.sub.1 is set in a range of 400 g/m.sub.2 .ltoreq.M.sub.1 .ltoreq.700 g/m.sup.2 to provide a reduction in weight, and a second region in which the grammage M.sub.2 is adjusted in a range of 900 g/m.sup.2 .ltoreq.M.sub.1 .ltoreq.1,200 g/m.sup.2 to provide an enhanced rigidity. At a first step, the composite core is heated, whereby it is expanded, and the thermoplastic synthetic resin is expanded. At a second step, a skin material is superposed onto the composite core. At a third step, the composite core is compressed, and the skin material is bonded to the composite core. In the laminate produced in the above manner, the first region contributes to a reduction in weight, and the second region contributes to an increase in rigidity.