Abstract: A ferritic aero diesel engine. The ferritic aero diesel engine includes an iron crankcase, a steel crankshaft and eight steel piston assemblies. The iron crankcase has a flat, horizontally opposed eight cylinder arrangement with a first set of cylinder walls defining a first set of cylinders in a first bank and a second set of cylinder walls defining a second set of cylinders in an opposed second bank. The steel crankshaft is rotatably mounted at least partially within the iron crankcase. Each of the steel piston assemblies of the plurality of steel piston assemblies is received within a respective cylinder of the iron crankcase and is coupled to the steel crankshaft. The first and second sets of cylinder walls have a minimum wall thickness of between approximately 4.8 and 5.2 mm.

Abstract: A ferritic aero diesel engine. The ferritic aero diesel engine includes an iron crankcase, a steel crankshaft and eight steel piston assemblies. The iron crankcase has a flat, horizontally opposed eight cylinder arrangement with a first set of cylinder walls defining a first set of cylinders in a first bank and a second set of cylinder walls defining a second set of cylinders in an opposed second bank. The steel crankshaft is rotatably mounted at least partially within the iron crankcase. Each of the steel piston assemblies of the plurality of steel piston assemblies is received within a respective cylinder of the iron crankcase and is coupled to the steel crankshaft. The first and second sets of cylinder walls have a minimum wall thickness of between approximately 4.8 and 5.2 mm.

Abstract: A unit dose package for a dental composition, comprising: (a) a rigid support member having a proximal end and a distal end, the rigid support member supporting one or more storage compartments for the dental composition and providing fluid flow communication between the one or more storage compartments and one or more discharge orifices, wherein the one or more storage compartments each have a volume of 10 ?l to 1000 ?l, and (b) a discharge conduit having a longitudinal axis extending from a proximal end to a distal end, the discharge conduit being rotatably attached to the distal end of the rigid support member for rotation around its longitudinal axis, wherein the attachment of the discharge conduit (b) and the rigid support member (a) is provided by two-component injection molding; whereby fluid flow communication between the discharge conduit and the one or more storage compartments may be established by rotating the discharge conduit around its longitudinal axis relative to the rigid support member

Abstract: A flap device for an internal combustion engine includes a flow housing comprising a flow channel, a bore arranged in the flow housing, an actuating shaft which protrudes outwards through the bore, a flap body arranged on the actuating shaft, a first bearing bush, and a sealing element radially surrounding the actuating shaft. The first bearing bush is arranged in the bore and has the actuating shaft mounted therein. An axial end of the first bearing bush protrudes beyond an end of the bore. The sealing element comprises at least one plate spring arranged between a first disc and a second disc. The first disc is secured on the actuating shaft and supports the at least one plate spring. The at least one plate spring rests against the second disc so that the second disc rests against the axial end of the first bearing bush which protrudes beyond the bore.

Abstract: A flap device for an internal combustion engine includes a flow housing comprising a flow channel, a bore arranged in the flow housing, an actuating shaft which protrudes outwards through the bore, a flap body arranged on the actuating shaft, a first bearing bush, and a sealing element radially surrounding the actuating shaft. The first bearing bush is arranged in the bore and has the actuating shaft mounted therein. An axial end of the first bearing bush protrudes beyond an end of the bore. The sealing element comprises at least one plate spring arranged between a first disc and a second disc. The first disc is secured on the actuating shaft and supports the at least one plate spring. The at least one plate spring rests against the second disc so that the second disc rests against the axial end of the first bearing bush which protrudes beyond the bore.

Abstract: A method of venting during sealing the cartridge. The cartridge body has an external wall, a generally cylindrical internal chamber wall having an internal chamber wall diameter and enclosing a cartridge chamber, and at least one channel wall forming a channel (or groove) in the chamber wall. The piston has a generally cylindrical plug wall positioned adjacent to the generally cylindrical internal chamber wall. The cylindrical plug wall has a diameter substantially equal to the diameter of the cylindrical internal chamber wall. Dental material is conveyed into the cartridge chamber. The piston is pressed into the cartridge chamber while venting gas from the cartridge chamber through the channel prior to forming a hermetic seal around the dental material in the cartridge chamber.

Abstract: A cartridge and a method of venting prior during sealing the cartridge. The cartridge body has an external wall, a generally cylindrical internal chamber wall having an internal chamber wall diameter and enclosing a cartridge chamber, and at least one channel wall forming a channel (or groove) in the chamber wall. The piston has a generally cylindrical plug wall positioned adjacent to the generally cylindrical internal chamber wall. The cylindrical plug wall has a diameter substantially equal to the diameter of the cylindrical internal chamber wall. Dental material is conveyed into the cartridge chamber. The piston is pressed into the cartridge chamber while venting gas from the cartridge chamber through the channel prior to forming a hermetic seal around the dental material in the cartridge chamber.

Abstract: The invention provides a storage stable dental composition comprising a volatile organic solvent and a polymerizable material enclosed by a package, which includes a closure, such as a cover or plug and a container made of a copolymer of a cycloolefin and an open chain olefin. In accordance with an embodiment of the invention is provided a stored packaged dental product by the process including: enclosing a dental composition in a package with at least a substantial portion of an injection molded thermoplastic copolymer of a cycloolefin and an open chain olefin, and storing the dental composition in the package for at least 1 week.