Abstract: A piston for a free piston engine generator, comprising one or more elements arranged coaxially along a piston shaft wherein the length of the piston is at least five times its maximum diameter, wherein at least one of the elements is formed from a magnetically permeable composite material having isotropic electrical resistivity at least twice that of electrical steel this arrangement providing improved free piston position control, more consistent combustion and improved electrical conversion efficiency.

Abstract: A free-piston engine has an engine cylinder and a single piston member. The single piston member has a double-ended piston that moves within the cylinder, and the piston member partitions the cylinder into two separate chambers, each of which are supplied with a compressible working fluid from one or more intake means. The piston moves over and past the intake means during each stroke such that the fluid is replenished within one chamber while the piston compresses the fluid held in the other chamber.

Abstract: A piston for a free piston engine generator, comprising one or more elements arranged coaxially along a piston shaft wherein the length of the piston is at least five times its maximum diameter, wherein at least one of the elements is formed from a magnetically permeable composite material having isotropic electrical resistivity at least twice that of electrical steel this arrangement providing improved free piston position control, more consistent combustion and improved electrical conversion efficiency.

Abstract: A free-piston engine generator comprising an engine cylinder, a piston configured to move within the cylinder, a cylinder housing having a bore for receiving the engine cylinder and a plurality of magnetisable elements arranged within the cylinder housing to be adjacent the cylinder along at least a portion of its length.

Abstract: A free-piston engine comprising an engine cylinder and a single piston member comprising a double-ended piston configured to move within the cylinder, wherein the piston member partitions the cylinder into two separate chambers, each of which are supplied with a compressible working fluid from one or more intake means, the piston being arranged to move over and past the intake means during each stroke such that the fluid is replenished within one chamber while the piston compresses the fluid held in the other chamber.

Abstract: A combustion management system for a combustion engine having at least one cylinder with an intake means comprising a sliding port valve and an intake solenoid poppet valve arranged in series and provided at a distance from the cylinder ends, and an exhaust solenoid poppet valve provided at each of the cylinder ends, the system comprising: a valve control means for controlling the intake solenoid poppet valve and the exhaust solenoid poppet valve independently of the position of the piston moving within the cylinder to control the compression and expansion ratios, wherein the piston moves over and past the intake means during each stroke.

Abstract: A piston for an engine generator, comprising alternating laminated core elements and non-magnetising spacer elements arranged along a piston shaft and secured such that contact is maintained between neighbouring elements, wherein the length of the piston is at least at least five times its maximum diameter.

Abstract: The invention refers to a tape printing device (2) for hand-held operation, having a housing with a first part and a second part, wherein the first part of the housing comprises a surface with a keyboard with keys (6) for inputting desired characters to be printed onto an image receiving tape (80), the surface having a breadth which is larger than a thickness of the first part of the housing, preferably a multiple thereof, and the second part of the housing comprises a cassette receiving bay (54) for accomodating a tape cassette (100) holding a supply of the image receiving tape (80), the second part of the housing further enclosing a print mechanism (26) arranged to print the desired characters onto the image receiving tape (80). Further a tape cassette (100) with an angled peel slot (110) is disclosed.

Abstract: The invention refers to a tape printing device (2) for hand-held operation, having a housing with a first part and a second part, wherein the first part of the housing comprises a surface with a keyboard with keys (6) for inputting desired characters to be printed onto an image receiving tape (80), the surface having a breadth which is larger than a thickness of the first part of the housing, preferably a multiple thereof, and the second part of the housing comprises a cassette receiving bay (54) for accomodating a tape cassette (100) holding a supply of the image receiving tape (80), the second part of the housing further enclosing a print mechanism (26) arranged to print the desired characters onto the image receiving tape (80).

Abstract: The invention refers to a tape printing device (2) for hand-held operation, having a housing with a first part and a second part, wherein the first part of the housing comprises a surface with a keyboard with keys (6) for inputting desired characters to be printed onto an image receiving tape (80), the surface having a breadth which is larger than a thickness of the first part of the housing, preferably a multiple thereof, and the second part of the housing comprises a cassette receiving bay (54) for accomodating a tape cassette (100) holding a supply of the image receiving tape (80), the second part of the housing further enclosing a print mechanism (26) arranged to print the desired characters onto the image receiving tape (80).

Abstract: The present invention refers to a tape printing device for hand-held operation, having a housing with a first part and a second part, wherein the first part of the housing comprises a surface with a keyboard with keys for inputting desired characters to be printed onto an image receiving tape, the surface having a breadth which is larger than a thickness of the first part of housing, preferably a multiple thereof, The second part of the housing comprises a cassette receiving bay for accomodating a tape cassette holding a supply of the image receiving tape, the second part of the housing further enclosing a print mechanism arranged to print the desired characters onto the image receiving tape. Further the tape cassette can have an angled peel slot.

Abstract: In order to improve and facilitate the peeling operation of a tape printing device of the type employing a tape cassette, a tape cassette (100) with an angled peel slot (110) is disclosed. The corresponding peel plunger (76) of the tape printing device is moving into the peel slot (110) during a peeling operation and the longitudinal axis of the peel slot (110) and the longitudinal axis of the tape (80) enclose a non-perpendicular angle, as well. Thus, only an edge (84) of the tape (80) is peeled, what reduces the forces required for peeling.

Abstract: The invention relates to a tape holding case housing a supply of image receiving tape and includes an angled surface to bend the surface of the tape approximately 90°, the angled surface being provided upstream of the printing position of the tape. The tape holding case also includes a casing that is designed to attach the tape holding case to an identically shaped tape holding case.

Abstract: The invention relates to a tape holding case housing a supply of image receiving tape and includes an angled surface to bend the surface of the tape approximately 90°, the angled surface being provided upstream of the printing position of the tape. The tape holding case also includes a casing that is designed to attach the tape holding case to an identically shaped tape holding case.

Abstract: The invention refers to a tape printing apparatus (2) used with tape cassettes (20, 220, 243, 260, 443). In order to make insertion and removal easier, the tape cassette is provided with a surface controlling the position of a printhead (22, 222, 322, 422) and/or a platen. When the cassette is inserted, printhead and platen are automatically separated such that the tape (24) can be introduced between them, and afterwards moved in the operative position. Further, an over center mechanism is proposed for moving printhead and platen. The tape cassette (443) can provide a 90.degree. bend in the tape (24) upstream the printing position, and the motor (42) can be located besides the zone for accommodating the image receiving tape (24). The cassette can be made attachable to other cassettes, and the means for attaching can guide and hold the cassette in the tape printer.

Abstract: A tape printing device which receives a tape cassette that accommodates a printable tape. The tape cassette includes a housing having a wall portion which is arranged to support the tape during a cutting operation which is performed with a cutting mechanism of the tape printing device. To align the cutting mechanism with the cassette during cutting, the wall portion of the cassette housing is arranged for interacting with a guide mechanism that connects the cutting mechanism and the wall portion during cutting and aligns the cutting mechanism with the wall portion.