Abstract: A two-dimensional antenna includes a ground plane, a primary radiator element, and at least one switchable radiator element. The ground plane comprises an electrically conductive material and is electrically coupled to an electrical ground. The primary radiator element is disposed in a coplanar relationship to said ground plane and is electrically coupled to a signal path of a transceiver. The at least one switchable radiator element is disposed in a coplanar relationship to the ground plane and the primary radiator element and is selectably electrically couplable to one of the signal path of the transceiver and the electrical ground.

Abstract: A gun lock of a firearm having two hammers movably disposed on a lock support, a trigger bar for each hammer for holding or releasing the hammers, a trigger, and a disconnector for the trigger, by which disconnector the trigger bars can be moved by the trigger from a holding position into a release position. The disconnector can be moved by an inertial mass between a triggering position, in which the trigger is connected to one of the two trigger bars, and a disconnect position, in which the connection between the trigger and the trigger bars is interrupted. The inertial mass is a pendulum mass swiveling about a transverse axis between a starting position and a safe position, by which the disconnector, upon the release of a first hammer, can be swiveled in a direction opposite to the direction of the pendulum mass into the disconnect position.

Abstract: A hinged-breech weapon includes a receiver, a barrel part arranged to be tiltable around a rotational axis on the receiver, a front shaft removably fastened on the barrel part, and a bearing piece arranged on the rear end of the front shaft, when viewed in the firing direction of the hinged-breech weapon. The bearing piece includes rear bearing surfaces for pivotable mounting on the front mating surfaces of the receiver and a positioning device for adjustment of the position of the bearing piece relative to barrel part. The positioning device includes a clamping element movable in the bearing piece in the longitudinal direction of front shaft and adjustable by a control element for mounting on a stop arranged on the barrel part.

Abstract: A hinged-breech weapon includes a receiver, a barrel part arranged to be tiltable around a rotational axis on the receiver, a front shaft removably fastened on the barrel part, and a bearing piece arranged on the rear end of the front shaft, when viewed in the firing direction of the hinged-breech weapon. The bearing piece includes rear bearing surfaces for pivotable mounting on the front mating surfaces of the receiver and a positioning device for adjustment of the position of the bearing piece relative to barrel part. The positioning device includes a clamping element movable in the bearing piece in the longitudinal direction of front shaft and adjustable by a control element for mounting on a stop arranged on the barrel part.

Abstract: A gun lock of a firearm having two hammers movably disposed on a lock support, a trigger bar for each hammer for holding or releasing the hammers, a trigger, and a disconnector for the trigger, by which disconnector the trigger bars can be moved by the trigger from a holding position into a release position. The disconnector can be moved by an inertial mass between a triggering position, in which the trigger is connected to one of the two trigger bars, and a disconnect position, in which the connection between the trigger and the trigger bars is interrupted. The inertial mass is a pendulum mass swiveling about a transverse axis between a starting position and a safe position, by which the disconnector, upon the release of a first hammer, can be swiveled in a direction opposite to the direction of the pendulum mass into the disconnect position.

Abstract: A two-dimensional antenna includes a ground plane, a primary radiator element, and at least one switchable radiator element. The ground plane comprises an electrically conductive material and is electrically coupled to an electrical ground. The primary radiator element is disposed in a coplanar relationship to said ground plane and is electrically coupled to a signal path of a transceiver. The at least one switchable radiator element is disposed in a coplanar relationship to the ground plane and the primary radiator element and is selectably electrically couplable to one of the signal path of the transceiver and the electrical ground.

Abstract: The invention is directed to a material and method for obtaining a ceramic abradable system for high temperature applications. High purity partially stabilized zirconia and/or hafnia base material has higher sintering resistance compared to conventional 6-9 weight percent yttria stabilized zirconia systems. The benefits of these systems are higher service lifetime and low thermal conductivity to achieve high operating temperatures. System includes a superalloy substrate, oxidation resistant bond coat and a thick ceramic abradable top coat. Total coating thickness is about 0.5-5 mm. In some applications an intermediate layer of high purity partially stabilized zirconia or a partially stabilized YSZ/MCrAlY cermet is applied over the oxidation resistant bond coat. In other applications an abradable system is applied on top of a grid. Additional benefits should be reduced blade wear at high operating conditions.

Abstract: The invention is directed to a material and method for obtaining a ceramic abradable system for high temperature applications. High purity partially stabilized zirconia and/or hafnia base material has higher sintering resistance compared to conventional 6-9 weight percent yttria stabilized zirconia systems. The benefits of these systems are higher service lifetime and low thermal conductivity to achieve high operating temperatures. System includes a superalloy substrate, oxidation resistant bond coat and a thick ceramic abradable top coat. Total coating thickness is about 0.5-5 mm. In some applications an intermediate layer of high purity partially stabilized zirconia or a partially stabilized YSZ/MCrAlY cermet is applied over the oxidation resistant bond coat. In other applications an abradable system is applied on top of a grid. Additional benefits should be reduced blade wear at high operating conditions.

Abstract: The invention is directed to high purity zirconia-based and/or hafnia-based materials and coatings for high temperature cycling applications. Thermal barrier coatings made from the invention high purity material was found to have significantly improved sintering resistance relative to coatings made from current materials of lower purity. The invention materials are high purity zirconia and/or hafnia partially or fully stabilized by one or any combinations of the following stabilizers: yttria, ytterbia, scandia, lanthanide oxide and actinide oxide. Limits for impurity oxide, oxides other than the intended ingredients, that lead to significantly improved sintering resistance were discovered. High purity coating structures suitable for high temperature cycling applications and for application onto a substrate were provided. In one structure, the coating comprises a ceramic matrix, porosity and micro cracks. In another structure, the coating comprises a ceramic matrix, porosity, macro cracks and micro cracks.

Abstract: The invention is directed to a material and method for obtaining a ceramic abradable system for high temperature applications. High purity partially stabilized zirconia and/or hafnia base material has higher sintering resistance compared to conventional 6-9 weight percent yttria stabilized zirconia systems. The benefits of these systems are higher service lifetime and low thermal conductivity to achieve high operating temperatures. System includes a superalloy substrate, oxidation resistant bond coat and a thick ceramic abradable top coat. Total coating thickness is about 0.5-5 mm. In some applications an intermediate layer of high purity partially stabilized zirconia or a partially stabilized YSZ/MCrAlY cermet is applied over the oxidation resistant bond coat. In other applications an abradable system is applied on top of a grid. Additional benefits should be reduced blade wear at high operating conditions.

Abstract: The invention is directed to high purity zirconia-based and/or hafnia-based materials and coatings for high temperature cycling applications. Thermal barrier coatings made from the invention high purity material was found to have significantly improved sintering resistance relative to coatings made from current materials of lower purity. The invention materials are high purity zirconia and/or hafnia partially or fully stabilized by one or any combinations of the following stabilizers: yttria, ytterbia, scandia, lanthanide oxide and actinide oxide. Limits for impurity oxide, oxides other than the intended ingredients, that lead to significantly improved sintering resistance were discovered. High purity coating structures suitable for high temperature cycling applications and for application onto a substrate were provided. In one structure, the coating comprises a ceramic matrix, porosity and micro cracks. In another structure, the coating comprises a ceramic matrix, porosity, macro cracks and micro cracks.

Abstract: The invention is directed to a material and method for obtaining a ceramic abradable system for high temperature applications. High purity partially stabilized zirconia and/or hafnia base material has higher sintering resistance compared to conventional 6-9 weight percent yttria stabilized zirconia systems. The benefits of these systems are higher service lifetime and low thermal conductivity to achieve high operating temperatures. System includes a superalloy substrate, oxidation resistant bond coat and a thick ceramic abradable top coat. Total coating thickness is about 0.5-5 mm. In some applications an intermediate layer of high purity partially stabilized zirconia or a partially stabilized YSZ/MCrAlY cermet is applied over the oxidation resistant bond coat. In other applications an abradable system is applied on top of a grid. Additional benefits should be reduced blade wear at high operating conditions.

Abstract: A delay line circuit is provided for aggregating a plurality of CW ultrasound echo signals. The circuit comprises a plurality of series coupled active component delay stages each having a respective tap input configured to receive a respective CW ultrasound echo signal of the plurality of ultrasound echo signals and provide an aggregated ultrasound echo signal.

Abstract: The present invention provides a composite coating and a method of preparing a composite coating resistant to galling and fretting. The coating is applied to a substrate and includes a mixture of hard carbide particles in an alloy matrix or oxides and solid lubricant particles captured in a binder. The coating is produced by using a thermal spray process to apply a powder containing both the hard face or oxide phases as well as the self lubricating phases. Thus, the applied coating of the present invention combines the benefits achieved with previous thermal spray coatings in terms of wear, abrasion, heat and corrosion with those afforded by solid lubricants. In addition, the coating of the present invention provides consistently distributed surface porosity to retain liquid lubricant on the coating surface.

Abstract: The invention is directed to a blended material and method for obtaining thermal barriers for high temperature cycling applications that have both high sintering resistance to achieve a high service lifetime and low thermal conductivity to achieve high operating temperatures. These materials are additionally suited for use in high temperature abradable (rub seal) coatings. The invention provides desired coating structures so that the changes in the coating microstructure over the in-service lifetime are either limited or beneficial.

Abstract: The invention relates to a thermal spray feedstock composition that employs free flowing agglomerates formed from (a) a ceramic component that sublimes,(b) a metallic or semi-conductor material that does not sublime and (c) a binder. The invention also relates to a method for preparing the agglomerates and a method for preparing ceramic containing composite structures from the agglomerates.

Abstract: An improved method of forming an abradable thermal barrier coating comprises providing a spray-dried powder of M-CrAlY and a solid lubricant, such as CoNiCrAlY—BN. Unlike powders provided for use with plasma spray guns, the powder is essentially free of polyester or other organic fugitive additives provided to increase porosity. The powder is applied using a combustion spray process and results in a M-CrAlY abradable coating that has an average porosity comparable to that of a plasma-applied coating but with smaller and more uniform pore distribution, and without requiring post-application heat treatments to remove fugitive materials. Deposition efficiency is also increased.

Abstract: A method, apparatus, system, and signal-bearing medium that in an embodiment determine when to switch between containers based on whether the current fill rate of the container is within a threshold of the slowest fill rate of the container and whether a current size of the container is between a soft threshold and a hard threshold. In this way, the switching of the container is based on a history of how fast the container is filling and how busy the system is in order to diminish the performance effect of switching on the application that is generating data to fill the container.

Abstract: The invention relates to a contact assembly mounted on a preselector of a step switch, where the fixed preselector contact has a contacting ring that can be interconnected. The appropriate design of the contact and of the openings in an insulating material housing, in which said contact should be fixed, as well as an additional positioning part enable a simple mounting and a reliable fixing which simultaneously prevents turning.

Abstract: A method and a circuit configuration for operation of a bus system. A bus includes a bus control unit which controls only an arbitration and when time is exceeded during a data transmission. An actual data transmission is determined in a respective active master unit and an addressed slave unit. A characteristic of a bus cycle, such as a data length, access to a data area or a control area and a waiting cycle, is transmitted in encoded form through a multiplicity of control lines.