Abstract: A linear electro-mechanical system comprising: a stator including at least first and second stator electronic circuits or groups of circuits; a free piston mover movable in a reciprocating motion relative to the stator, the free piston including: a piston surface; a translator configured so that an electromagnetic force may be applied on the free piston mover by one or more of the stator electronic circuits or groups of circuits; and one or more translator electronic circuits, the system further comprising a switching device for each of the first and second stator electronic circuits or groups of circuits such that the current in each of the first and second stator electronic circuits or groups of circuits is independently controllable, and wherein at least one of the translator electronic circuits is configured to receive power from at least one of the independently controlled stator electronic circuits or groups of circuits during at least part of the stroke of the free piston mover.

Abstract: Adaptive control of a Free Piston Mover (1, 19), wherein a Control Parameter Set (COPS?) for closed loop control of a Target Control Variable (CVt) is adapted using a Future-Stroke Controller (20) to respond to Input Demand (21) signals whilst ensuring a sufficient current control margin and compensating for system changes over time. The Control Parameter Set (COPS?) is transmitted to an In-Stroke Controller (23) in advance of the start of a stroke to be controlled, and the In-Stroke Controller (23) transmits a Current Demand (Qt) to a Current Controller (25) of the Free Piston Mover (119).

Abstract: An electro-hydraulic linear actuator module comprising a stator having a cylindrical bore therethrough, a linear electric machine translator movable axially within the stator bore, a positive displacement chamber adjacent each end of the translator for holding, in use, an incompressible fluid, first and second fluid pathways, one to each chamber, for the flow of an incompressible fluid, wherein movement of the translator along the stator bore alters the volumes of the chambers.

Abstract: An electro-hydraulic linear actuator module comprising a stator having a cylindrical bore therethrough, a linear electric machine translator movable axially within the stator bore, a positive displacement chamber adjacent each end of the translator for holding, in use, an incompressible fluid, first and second fluid pathways, one to each chamber, for the flow of an incompressible fluid, wherein movement of the translator along the stator bore alters the volumes of the chambers.

Abstract: A linear electrical machine comprising a movable piston, an axially segmented cylinder having least one magnetically permeable segment and a bore configured to allow the piston to move within the cylinder, a cylinder housing having a bore for receiving the segmented cylinder, and means for securing the segmented cylinder in place within the cylinder housing. This arrangement permits the construction of it free piston engine linear with improved piston position control, more consistent combustion and improved electrical conversion efficiency.

Abstract: A piston expander and transfer valve for the controlled metering of a pressurised working fluid into an expansion chamber as part of an energy conversion device, and in particular as part of a heat to power conversion device employing a rankine thermodynamic cycle. The piston expander comprising a cylinder having an inlet manifold connected to an aperture in the cylinder's inlet aperture, a piston movable within the cylinder, and a transfer valve assembly movable under the action of changing gas pressure in the main chamber of the piston expander.

Abstract: A linear electrical machine comprising a movable piston, an axially segmented cylinder having least one magnetically permeable segment and a bore configured to allow the piston to move within the cylinder, a cylinder housing having a bore for receiving the segmented cylinder, and means for securing the segmented cylinder in place within the cylinder housing. This arrangement permits the construction of it free piston engine linear with improved piston position control, more consistent combustion and improved, electrical conversion efficiency.

Abstract: A label printer for printing a label, the printer comprising: input means for inputting data defining labels to be printed; storage means for storing a plurality of labels, labels being separated in said storage means by label indicators; selection means for selecting at least one of said labels to be displayed at a display of the label printer; and means for controlling only said selected label to be displayed in dependence on the location of label indicators defining the limits of said selected label.

Abstract: A label printer for printing a label, the printer comprising: input means for inputting data defining labels to be printed; storage means for storing a plurality of labels, labels being separated in said storage means by label indicators; selection means for selecting at least one of said labels to be displayed at a display of the label printer; and means for controlling only said selected label to be displayed in dependence on the location of label indicators defining the limits of said selected label.

Abstract: The invention relates to a combination of a printing device and a tape holding case (10). The printing device comprises a zone for receiving the tape holding case (10) and a slide switch (32) in said zone. The slide switch (32) is movable between at least first and second positions corresponding to a first resp. second type of tape. In order to make the insertion of the tape holding case (10) easier, it is proposed that a tape holding case of the first type is provided with a ramp configured such that the switch (32) is moved into the first position during insertion of the tape holding case (10) into the zone when the switch (32) is originally in the second position. When a tape holding case of a second type is provided, its ramp can move the switch (32) automatically into the second position.