| 摘要 |
1513591 Hydraulic accumulators PIRELLI GENERAL CABLE WORKS Ltd 8 Feb 1977 [6 May 1976] 18653/76 Addition to 1358088 Heading F1D In an improvement in the accumulator of the Parent Patent each gas-filled cell comprises a pair of plates having annular corrugations, some or all of the corrugations varying in height around their periphery so that when two cells are placed face to face the corrugations of the respective plates coincide and also provide a generally radial path from the centre to the periphery of the cells for the escape of any gas trapped between the cells. Thus some or all the corrugations may have raised portions, or all the corrugations may have depressed portions. The raised and/or depressed portions may be located in one or more radial zones. |
