Lubrication mechanism design for aircraft landing gear bearings

Patent (2018)

A shock absorber with lubricated bearings for an aircraft landing gear includes a piston that is received in a cylinder, and an upper bearing fixed to the piston that slidably engages an inner surface of ... [more ▼]

A shock absorber with lubricated bearings for an aircraft landing gear includes a piston that is received in a cylinder, and an upper bearing fixed to the piston that slidably engages an inner surface of the cylinder. A lower bearing extends inwardly from a lower portion of the cylinder and engages an outer surface of the piston. The lower bearing has a center axis and defines an annular bearing surface configured to slidably engage the piston outer surface. The annular bearing surface has a first portion that extends circumferentially more than one hundred eighty degrees about the center axis at a constant radius, defining a circular annular segment. A second portion closes the circular annular segment and defines a shallow channel or pocket in the annular bearing surface. In some embodiments the lower bearing further comprises oppositely disposed frustoconical thrust portions. [less ▲]

Render comprising honeycomb and cementitious or clay or geopolymer material

Patent (2018)

Method and Device for Anonymous Communication

Patent (2015)

Decentralized Power Supply for Small and Medium User Facilities

Patent (2014)

The world-wide energy consumption has almost doubled since 1980 despite efforts towards energy saving and efficiency. This trend is supposed to continue for the decades to come so that major energy crises ... [more ▼]

The world-wide energy consumption has almost doubled since 1980 despite efforts towards energy saving and efficiency. This trend is supposed to continue for the decades to come so that major energy crises with electricity cuts and shortage of petrol or gas are anticipated. Furthermore, an ever increasing consumption of fossil fuels significantly contributes to further emissions of greenhouse gases and consequently to global warming in conjunction with catastrophic climate changes. These impacts are reduced to a large extent through utilisation of renewable energy sources for and within decentralised user facilities. The present invention relates to a method of communicating operation modes between a user facility control unit at a user facility and a utility grid control unit of a utility grid. In particular, it relates to a decentralised method of communicating operation modes between a user facility control unit at a user facility with renewable energy supply and a utility grid control unit of a utility grid. [less ▲]

Electrical Inverter and Method of Operation

Patent (2014)

The invention permits the simplified detection of the grid impedance angle at an inverter's point of connection without additional measurement equipment. Please contact me for technical details. Licensing ... [more ▼]

The invention permits the simplified detection of the grid impedance angle at an inverter's point of connection without additional measurement equipment. Please contact me for technical details. Licensing is endorsed by the University of Luxembourg. [less ▲]

Methods and Means for Harmonics Compensation in Electrical Power Generation

Patent (2014)

Feeding more and more multiple non-linear and unsymmetrical power consumers (TV, Computers etc…) cause serious disturbances for the grid quality in terms of voltage harmonics and distortion power in ... [more ▼]

Feeding more and more multiple non-linear and unsymmetrical power consumers (TV, Computers etc…) cause serious disturbances for the grid quality in terms of voltage harmonics and distortion power in particular in decentralised low power supplies like solar photovoltaic (PV) in households. The use of inverter-fed power devices with modern high speed micro-controllers and an intelligent management of the different powers to be generated can help improving the power quality under any operating conditions. The invention provides a compensation algorithm implemented in a micro-controller combining the use of Finite Impulse Response (FIR) filters to extract the different harmonics from the original voltage signal and applies a Phase Locked Loop (PLL) to every extracted harmonic signal, which is finally compensated via a Proportional-Integral (PI) controller. All the PI controllers outputs are superposed in the final voltage source in such a way that they don’t conflict with each other, leading to a stable voltage source generation with a total harmonic distortion (THD) smaller than the limit of 8% requested by the global European power quality norm EN50160. The active harmonics compensator is able to compensate individually the strongest harmonics due to the feedback effect on the voltage source of any kind of non-linear load at partial-load as well as overload operation. The compensation can be implemented on a self-sufficient single voltage generating power source running in stand-alone or grid-tied. It can also be shared and distributed on multiple voltage source inverters (VSI) of different powers connected on a utility grid. That allows an optimisation of the power production of each device, in particular supplied by variable renewable energy sources (solar PV, wind), taking into consideration its capacity currently available. [less ▲]

Method for manufacturing a semiconductor thin film

Patent (2013)

Semiconductor material and method of production

Patent (2013)

Method for manufacturing a semiconductor thin film

Patent (2013)

Light emitting source and method for emitting light based on boron nitride nanotubes

Patent (2012)

The invention relates to a controllable frequency, broad spectrum light emitting source that includes boron nitride nanotubes with defects produced by the absence of a boron atom in the tubular structure ... [more ▼]

The invention relates to a controllable frequency, broad spectrum light emitting source that includes boron nitride nanotubes with defects produced by the absence of a boron atom in the tubular structure and wherein the source is additionally provided with a means for generating an electrical field perpendicular to the tube. The invention may be used as a field effect transistor (adding electrodes) or as a source of conversion of energy of an incident bundle. [less ▲]

3D Time-Of-Flight Camera System and Position/Orientation Calibration Method Therefor

Patent (2011)

Electrical and Opto-Electrical characterisation of Large-Area Semiconductor Devices

Patent (2010)

Zerstörungsfrei lösbares Schlusselement für axial und radial gefügte mechanische Verbindungen

Patent (2003)

The connecting element comprises a bolt (1) and geometrically defined balls (2) which by a housing (4) and a tube (3) are brought into a defined position and held there. The bolt is introduced into the ... [more ▼]

The connecting element comprises a bolt (1) and geometrically defined balls (2) which by a housing (4) and a tube (3) are brought into a defined position and held there. The bolt is introduced into the mechanism consisting of the balls, housing and tube by its contour which conforms to the geometrically defined balls, with a form fit being created between the bolt and the aforesaid mechanism. As the diameter of the mechanism is greater than that of the bore in the connecting halves (6,7) a form fit is created between the connecting element and connecting partners like a screw head. [less ▲]