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公开(公告)号：US20210347703A1
公开(公告)日：2021-11-11
申请号：US17282848
申请日：2019-10-07
申请人： Jacobus Johannes VAN DER MERWE , Jakub Bogdan SKUT , Michael James CORBETT , BALLANCE AGRI-NUTRIENTS LIMITED
摘要： Provided is a method of manufacturing phosphate fertilizer that comprises dicalcium phosphate, the method comprising providing milled phosphorus-containing rock having a total phosphorus content of at least about 15% P by weight, mixing the milled phosphate-containing rock with a mineral acid in a reaction vessel to produce a superphosphate product, and mixing the superphosphate product with a calcium-source reverting agent and a magnesium-source reverting agent to produce a reverted product, the calcium-source reverting agent comprising at least about 20% by weight of the total reverting agent of calcium oxide with a calcium carbonate equivalence of at least about 134%, and the magnesium-source reverting agent providing a magnesium source and comprising at least about 20% by weight of the total reverting agent of magnesium source with a calcium carbonate equivalence of at least about 80%, to produce a granulated cured reverted product having a product yield of at least about 1.90 or of at least about 1.77, and a moisture content of less than 3%.
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公开(公告)号：US20210335536A1
公开(公告)日：2021-10-28
申请号：US17366351
申请日：2021-07-02
摘要： A Method of reducing leakage magnetic flux for a shell-type transformer or inductor is disclosed. The magnetic flux density is reduced between flux transitional areas and corner losses are reduced.
Advantageous, the method may also help to reduce the operational temperature of the transformer or inductor (of any size) during normal use. The centre of the ferromagnetic core is cooled. The effective outside area of the core is enlarged. The transformer core is organized to have any number of cooling holes (400.3.1), (400.3.2) without reducing the area for magnetic flux to circulate around the core. Several embodiments are disclosed. Various improvements may be made without departing from the methods and principals disclosed in this patent.-
3.发明申请Method of Amplitude Modulating a Message Signal in the Audible Frequency Range Onto a Carrier Signal in the Ultrasonic Frequency Range 审中-公开将声音频率范围内的信号信号调制到超声波频率范围内的载波信号的方法公开(公告)号：US20080205195A1
公开(公告)日：2008-08-28
申请号：US12065162
申请日：2006-08-28
IPC分类号： H04B1/02
CPC分类号： G10K15/02
摘要： This invention relates to signal processing and to acoustics. The invention provides a method of amplitude modulating a message signal (12) in the audible frequency range of a human onto a carrier signal (14) in the ultrasonic frequency range, the method including generating an amplitude modulated signal (20.1) having a constant envelope on one side (72). The invention extends also to a method of amplitude modulating a message signal (12) in the audible frequency range of a human onto a carrier signal (14) in the ultrasonic frequency range, the method including generating an amplitude modulated signal (20.2) having a constant level (33) defined successively by an upper and lower envelope of the amplitude modulated signal (20.2). The invention also extends to related amplitude modulators (10) and (110) and also to a related acoustic system (50).
摘要翻译： 本发明涉及信号处理和声学。 本发明提供了一种在超声波频率范围内将人的可听频率范围内的消息信号（12）幅度调制到载波信号（14）上的方法，该方法包括生成具有恒定包络的幅度调制信号（20.1） 在一边（72）。 本发明还涉及一种在超声波频率范围内将人的可听频率范围内的消息信号（12）幅度调制到载波信号（14）上的方法，该方法包括：生成调幅信号（20.2），其具有 恒定电平（33）由幅度调制信号（20.2）的上下包络依次定义。 本发明还扩展到相关的幅度调制器（10）和（110），并且还扩展到相关的声学系统（50）。
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