Crous
Frederik Jacobus Crous, Balmain AU
Patent application number | Description | Published |
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20100128090 | Mems Bubble Generator Incorporating Superalloy Heater In Direct Contact With Bubble Formation Liquid Without Intervening Protective Coating - A MEMS vapor bubble generator includes a chamber for holding liquid; and a heater positioned in the chamber, the heater being formed using a sputtering technique. The heater is formed from a superalloy material. The superalloy material of the heater is in direct contact with the liquid, without any intervening protective coating. The superalloy has a crystalline structure with a grain size less than 100 nano-metres. The superalloy is MCrAlX, where M is one or more of Ni, Co, Fe with M contributing at least 50% by weight, Cr contributing between 8% and 35% by weight, Al contributing more than zero but less than 8% by weight, and X contributing less than 25% by weight, with X consisting of zero or more other elements, preferably including but not limited to Mo, Re, Ru, Ti, Ta, V, W, Nb, Zr, B, C, Si, Y, Hf. | 05-27-2010 |
20110122183 | PRINTHEAD INCORPORATING PRESSURE PULSE DIFFUSING STRUCTURES BETWEEN INK CHAMBERS SUPPLIED BY SAME INK INLET - An inkjet printer includes a printhead having a plurality of ink chambers fed be an ink inlet, each ink chamber having a heater element for ejecting drops of ink from a nozzle aperture of each chamber; a plurality of pressure pulse diffusing structure positioned between the plurality of ink chambers fed by the ink inlet, the plurality of pressure pulse diffusing structures for retarding a propagation of pressure waves generated by each ink chamber to adjacent ink chambers; and a controller for receiving print data and generating drive pulses to energize the heater elements in accordance with the print data. The controller increases the drive pulse energy during the printhead lifetime such that the drive pulse energy is never less than that of a preceding drive pulse. | 05-26-2011 |
20110228010 | PRINTHEAD WITH BUBBLE VENTS - An inkjet printhead includes a plurality of ink chambers fed by a common ink inlet, the plurality of ink chambers sharing a common roof structure; a plurality of heater elements respectively allocated to each of ink chambers; a plurality of nozzle apertures defined through the common roof structure and respectively aligned with the heater element of each ink chamber; and a bubble vent defined in the common roof of the ink chambers and aligned with the common ink inlet, the bubble vent sized to allow ink surface tension to restrict an egress of ink, and permit egress of gas bubbles therefrom. | 09-22-2011 |
Fredrik Jacobus Crous, Balmain AU
Patent application number | Description | Published |
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20090066742 | PRINTHEAD WITH INCREASING DRIVE PULSE TO COUNTER HEATER OXIDE GROWTH - An inkjet printer that has a printhead with an array of ejection devices for ejecting drops of liquid onto a media substrate. Each of the ejection devices having a chamber for holding liquid, a nozzle in fluid communication with the chamber and a heater positioned in the chamber for contact with the liquid such that resistive heating of the heater generates a vapour bubble that ejects a drop of the liquid through the nozzle. The printer also has a controller for receiving print data and generating drive pulses to energize the heaters in accordance with the print data. The controller increases the drive pulse energy during the printhead lifetime. | 03-12-2009 |
Kevin Henri Crous, Centurion ZA
Patent application number | Description | Published |
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20090020659 | Cymbal mountable microphone mounting device - The invention relates to a microphone mounting device for mounting a microphone to a musical instrument, and more particularly to a microphone mounting device suitable for mounting a microphone to a cymbal arrangement. The mounting device includes a body having a first end zone and a second end zone. The first end zone includes an engagement formation provided thereon for engaging the cymbal stand and the second end zone includes a threaded connector suitable for engaging a microphone assembly, the first end zone and the second end zone being displaceable relative to one another. | 01-22-2009 |
20090020677 | Drum mountable microphone mounting device - The invention relates to a microphone mounting device for mounting a microphone on a musical instrument, and more particularly, to a microphone mounting device suitable for mounting a microphone on a drum. The microphone mounting device includes a body having a first end zone and a second end zone, wherein the first end zone has an aperture provided therethrough for engaging the end of a threaded rod located on the drum, and a threaded connector is secured to the second end zone of the body, the threaded connector being suitable for engaging a microphone holder. | 01-22-2009 |
Reinier Crous ZA
Patent application number | Description | Published |
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20120029096 | OLEFIN SELECTIVE FT CATALYST COMPOSITION AND PREPARATION THEREOF - The present invention relates to a hydrocarbon synthesis catalyst comprising in its unreduced form a) Fe as catalytically active metal, b) an alkali metal and/or alkaline-earth metal in an alkali metal- and/or alkaline-earth metal-containing promoter, the alkali metal, c) and a further promoter comprising, or consisting of, one or more element(s) selected from the group of boron, germanium, nitrogen, phosphorus, arsenic, antimony, sulphur, selenium and tellurium, to a process for the synthesis of a hydrocarbon synthesis catalyst, to a hydrocarbon synthesis process which is operated in the present of such a catalyst and to the use of such a catalyst in a hydrocarbon synthesis process. | 02-02-2012 |