Abstract

An alkali-metal dispenser to dispense highly pure rubidium in a high-vacuum environment while not negatively impacting the high-vacuum pressure level. The alkali-metal dispenser is operable in various vapor-deposition applications or to provide a highly pure elemental-alkali metal in cold-atom magneto-optical traps.

IPC Classes  ?

• C23C 14/14 - Metallic material, boron or silicon
• C01B 32/156 - After-treatment
• C01B 32/20 - Graphite
• C01B 32/215 - Purification; Recovery or purification of graphite formed in iron making, e.g. kish graphite
• C01D 17/00 - Rubidium, caesium, or francium compounds
• C22B 26/00 - Obtaining alkali, alkaline earth metals or magnesium
• C22B 26/10 - Obtaining alkali metals
• C22F 1/02 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working in inert or controlled atmosphere or vacuum
• C23C 14/26 - Vacuum evaporation by resistance or inductive heating of the source

Abstract

Method and apparatus for precise measurement of azimuth. An angular rate sensor is rotated so its sensitive axis periodically aligns with the horizontal component of the earth's spin rate (north). A preferably sinusoidal signal is analyzed with respect to the relative angle of the sensor and a desired direction in order to determine the azimuth of that direction.

IPC Classes  ?

• G01C 17/28 - Electromagnetic compasses
• G01C 17/00 - Compasses; Devices for ascertaining true or magnetic north for navigation or surveying purposes
• G01C 1/00 - Measuring angles

Abstract

A printed circuit board (PCB) coil linear actuator is disclosed. The actuator includes a coil assembly and a magnet assembly. The coil assembly includes a plurality of PCB coils electrically connected in series. The PCB coils arranged in a row and adjacent PCB coils are separated by a gap. Each PCB coil includes a low aspect ratio, multi-layer coil member disposed on a board member. The actuator assembly includes a plurality of magnet units arranged in a row, wherein adjacent magnet units are separated by a gap. When the actuator is assembled, the PCB coils arranged in alternating sequence with the magnet units. The PCB coil linear actuator is intended to replace traditional slotted bobbin voice coil actuators (VCAs) and is particularly useful in fast steering mirror (FSM) applications. The PCB coil linear actuator provides many advantages over a VCA of an equivalent motor constant, including improved performance, lower weight and a lower profile.

IPC Classes  ?

• G06F 19/00 - Digital computing or data processing equipment or methods, specially adapted for specific applications (specially adapted for specific functions G06F 17/00;data processing systems or methods specially adapted for administrative, commercial, financial, managerial, supervisory or forecasting purposes G06Q;healthcare informatics G16H)