摘要:
An aircraft powering system is provided which includes an aircraft electrical connector is provided with features to allow facile engagement with an aircraft and strong retention forces. The aircraft powering system may include the aircraft electrical connector having a unique biasing mechanism and modular construction, wherein the biasing mechanism is configured to place differential forces onto mating electrical connectors from an aircraft. The biasing mechanism may be operatively coupled to a handle or trigger, which may be easily engageable by an operator.
摘要:
A concrete lid for an in-ground utilities box includes a plastic reinforcement structure filled with concrete. The plastic reinforcement structure includes one or more plastic sidewalls that protect the edges of the lid from damage. The upper and lower surfaces of the lid are exposed concrete (with the exception of the upper and lower edges of the one or more plastic sidewalls). The one or more plastic sidewalls laterally surround a plastic reinforcement grid, which is centrally located between the upper and lower edges of the one or more plastic sidewalls. The one or more plastic sidewalls can be integrally formed with the plastic reinforcement grid. The plastic reinforcement grid reinforces the concrete lid, eliminating the need for separate reinforcement material. Support struts can be used to support the plastic reinforcement grid while wet concrete is being poured into the plastic reinforcing structure.
摘要:
A dispenser includes a body having four side walls, a base and an opening in a top of the body. The base has end walls extending substantially parallel to the side walls so that the dispenser is substantially double walled. A lid is hingedly connected near the top of the body and covers the opening. The lid has a slot therein for sheet material to be dispensed therethrough. The dispenser also includes a platform that supports the sheet material. The platform is movable against forces of a compression element from a first position adjacent the lid to a second position spaced apart from the lid. The end walls have a plurality of ribs extending therefrom. The ribs engage a plurality of corresponding grooves in the platform so that the platform is slidably guided within the body along the ribs.
摘要:
The invention relates to an apparatus and to a method for adapting the size of an ion beam spot in tumor irradiation. For that purpose, the apparatus has a raster scanning device composed of raster scanning magnets (20) for raster scanning the ion beam (19). In addition, the apparatus comprises quadrupole magnets (10) determining the size of the ion beam spot, which quadrupole magnets (10) are arranged directly in front of the raster scanning magnets (20), and finally two magnet power supply units (18) for the quadrupole doublet of the quadrupole magnets (10) determining the size of the ion beam spot, the apparatus having a control loop for obtaining current correction values, by comparing desired and actual values of the prevailing dimension of the beam, for two magnet power supply units (18) of the quadrupole doublet arranged directly in front of the raster scanning magnets (20), for defined homogenization and/or for defined variation of the size of the ion beam spot.
摘要:
The invention relates to a method of checking emergency shutdown of an ion beam therapy system which comprises a raster scanning device arranged in a beam guidance system and having vertical deflection means and horizontal deflection means for the vertical and horizontal deflection of a treatment beam at right angles to its beam direction, so that the treatment beam is deflected by the raster scanning device onto an isocenter of the irradiation station and scans a specific area surrounding the isocenter, a check of emergency shutdown being carried out.