UMC UNIVERSAL MOTOR CORPORATION GMBH Patent applications |
Patent application number | Title | Published |
20100162998 | FREE PISTON ASSEMBLY AND METHOD FOR CONTROLLING A FREE PISTON ASSEMBLY - Free piston assembly, comprising at least one piston accommodating device, at least one piston device having a first piston surface and a second piston surface facing away from the first piston surface, which is moveable in a linear manner in the corresponding piston accommodating device, and an expansion space which is arranged in the piston accommodating device and delimited by the first piston surface, wherein the piston device is arranged to be driven by the action of a medium which expands in the expansion space, wherein a resilience space arranged in the at least one piston accommodating device is delimited by the second piston surface, and wherein the resilience space is connected to at least one pre-compression chamber in fluidic manner. | 07-01-2010 |
20090101005 | FREE-PISTON DEVICE AND METHOD FOR OPERATING A FREE-PISTON DEVICE - There is provided a free-piston device, comprising at least one piston chamber in which at least one piston assembly is arranged for linear displacement, the at least one piston assembly being drivable under the action of a medium which expands in an expansion space, and the at least one piston chamber having a resilience space, in which a compressible gas is contained for exerting a returning force on the at least one piston assembly, and at which a control member is arranged for controlling the returning force while the free-piston device is in operation. A method for operating a free-piston device is also proposed. | 04-23-2009 |