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公开(公告)号:US4713185A
公开(公告)日:1987-12-15
申请号:US715368
申请日:1985-03-25
申请人: John Howard , Marie Stirling
发明人: John Howard , Marie Stirling
CPC分类号: C09K8/885 , Y10S507/936
摘要: Sacrificial agents employed in methods of obtaining oil from rock formations by surfactant flooding comprising oxidized and/or chlorinated lignin and lignin-like derivatives obtained form inexpensive and readily available sources. In one form of the invention such derivatives present in E-stage wood pulp bleach plant effluent are concentrated by the use of macroporous resins, reverse osmosis or membrane dialysis. In another form of the invention, new sources of the derivatives are provided from forest industry by-products. In a further form of the invention, the derivatives are complexed with iron which significantly improves the sacrificial agent activity of the derivatives. Such sacrificial agents reduce the amount of expensive surfactant required in the oil recovery method.
摘要翻译: 用于通过表面活性剂淹没从岩层获得油的方法中使用的牺牲剂,其包含由廉价和容易获得的来源获得的氧化和/或氯化木质素和木质素样衍生物。 在本发明的一种形式中,通过使用大孔树脂,反渗透或膜透析来浓缩存在于E级木浆漂白工厂流出物中的衍生物。 在本发明的另一种形式中,衍生物的新来源由森林工业副产品提供。 在本发明的另一种形式中,衍生物与铁络合,这显着提高了衍生物的牺牲剂活性。 这种牺牲剂减少油回收方法中所需的昂贵的表面活性剂的量。
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公开(公告)号:US4642837A
公开(公告)日:1987-02-17
申请号:US767559
申请日:1985-08-20
申请人: Charles Nichols , John Howard
发明人: Charles Nichols , John Howard
CPC分类号: A46B5/00 , B25G3/14 , B25G3/30 , A46B2200/302 , Y10T403/535 , Y10T403/67
摘要: The broom assembly of the present invention comprises of a broom shroud having an opening in its top, said broom shroud including resilient means depending inwardly toward said opening; bristle retaining means including ferrule means integral therewith and extending upwardly therefrom, said ferrule means adapted to receive said resilient means; a broom handle removably received in said ferrule, and fastening means engaging the ferrule means, whereby said resilient means is flexed inwardly against the handle upon tightening said fastening means.
摘要翻译: 本发明的扫帚组件包括在其顶部具有开口的扫帚罩,所述扫帚罩包括朝向所述开口向内倾斜的弹性装置; 刷毛保持装置,包括与其成一体并从其向上延伸的套圈装置,所述套圈装置适于容纳所述弹性装置; 可移除地容纳在所述套圈中的扫把,以及紧固装置接合所述套圈装置,由此所述弹性装置在紧固所述紧固装置时向内弯曲抵靠手柄。
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公开(公告)号:US4238638A
公开(公告)日:1980-12-09
申请号:US967574
申请日:1978-12-08
申请人: Donald F. Cretney , John Howard
发明人: Donald F. Cretney , John Howard
CPC分类号: H01B7/285
摘要: An electric cable having a core made of insulated conductors disposed within a polymeric sheath. Voids within the core, between the conductors, are at least partially filled in the unused cable with a mixture comprising untreated calcium carbonate and a water-attracting polymer able to form a gel on contact with water without swelling. The cables are made waterproof by the presence of the mixture, which is cheaper than prior mixtures but as effective.
摘要翻译: 一种电缆,其具有设置在聚合物护套内的由绝缘导体制成的芯。 导体之间的芯内部的空隙至少部分地填充在未使用的电缆中,其中包含未处理的碳酸钙和吸水性聚合物的混合物,其能够在与水接触时形成凝胶而没有溶胀。 电缆通过混合物的存在使其防水,这比以前的混合物便宜但是有效。
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54.
公开(公告)号:US20240137065A1
公开(公告)日:2024-04-25
申请号:US18386626
申请日:2023-11-02
申请人: John Howard
发明人: John Howard
IPC分类号: H04B1/58 , H04B1/04 , H04B7/0426
CPC分类号: H04B1/583 , H04B1/0458 , H04B7/043
摘要: A beam forming network system includes a first beam forming network having first and second ports, in which each of the first ports is operatively coupled to an antenna element; and a second beam forming network including third and fourth ports, in which each of the third ports is operatively coupled to one of the second ports using at least one of a phase shifter, attenuator, power divider, and/or hybrid coupler. A method of beam forming includes coupling each of the first ports associated with a first beam forming network operatively to one antenna element, and coupling each of the third ports associated with a second beam forming network operatively to one of the second ports associated with the first beam forming network using at least one of a phase shifter, attenuator, power divider, and/or hybrid coupler.
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公开(公告)号:US20240030573A1
公开(公告)日:2024-01-25
申请号:US18215024
申请日:2023-06-27
申请人: John Howard
发明人: John Howard
CPC分类号: H01P1/184 , H01P11/007
摘要: A negative differential phase shifter includes a first uncoupled transmission line, wherein the first uncoupled transmission line has a length of λ/2 at a center frequency; a first coupled transmission line, wherein the first coupled transmission line is operatively connected to the first uncoupled transmission line; and a second uncoupled transmission line, wherein the second uncoupled transmission line is operatively connected to the first coupled transmission line, and the second uncoupled transmission line is operatively connected to the first uncoupled transmission line. A method of implementing a negative differential phase shifter includes operatively connecting a first coupled transmission line to a first uncoupled transmission line, wherein the first uncoupled transmission line has a length of λ/2 at a center frequency; operatively connecting a second uncoupled transmission line to the first coupled transmission line; and operatively connecting the second uncoupled transmission line to the first uncoupled transmission line.
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公开(公告)号:US11569011B2
公开(公告)日:2023-01-31
申请号:US15343982
申请日:2016-11-04
申请人: John Howard
发明人: John Howard , Wenny Lin , Xiao Chu Mei
摘要: A method and apparatus of reinforcing a cable includes wrapping a flexible wire around at least a portion of an external surface of the cable, and soldering the flexible wire to the cable, thereby positioning the flexible wire with respect to the cable. The portion of the external surface of the cable wrapped with the flexible wire may be disposed between the cable and a connector, or represent an entire length of the cable. Wrapping the flexible wire may involve wrapping the flexible wire around a portion of the external surface of the cable such that coils of the flexible wire are disposed apart from each other, and sliding the coils together such that the coils of the flexible wire are touching each other.
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公开(公告)号:US20210058052A1
公开(公告)日:2021-02-25
申请号:US16990678
申请日:2020-08-11
申请人: John Howard
发明人: Wenny Howard , John Howard
IPC分类号: H03H7/01
摘要: A non-monotonic re-entrant band stop filter equalizer includes terminations and couplers. A first port of a first coupler is coupled as a first external port, and a second port of the first coupler is coupled to a band stop filter. A third port of the first coupler is coupled to a fourth port of a second coupler, and a fourth port of the first coupler is coupled to a first termination. A first port of the second coupler is coupled to the band stop filter, and a second port of the second coupler is coupled as a second external port. A third port of the second coupler is coupled to a second termination. At least one of the first directional coupler and/or second directional coupler may include at least one of a backward coupler and/or forward coupler.
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58.
公开(公告)号:US20200295799A1
公开(公告)日:2020-09-17
申请号:US16891244
申请日:2020-06-03
申请人: John Howard
发明人: John Howard
IPC分类号: H04B1/58 , H04B7/0426 , H04B1/04
摘要: A beam forming network system includes a first beam forming network having first and second ports, in which each of the first ports is operatively coupled to an antenna element; and a second beam forming network including third and fourth ports, in which each of the third ports is operatively coupled to one of the second ports using at least one of a phase shifter, attenuator, power divider, and/or hybrid coupler. A method of beam forming includes coupling each of the first ports associated with a first beam forming network operatively to one antenna element, and coupling each of the third ports associated with a second beam forming network operatively to one of the second ports associated with the first beam forming network using at least one of a phase shifter, attenuator, power divider, and/or hybrid coupler.
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公开(公告)号:US10741931B2
公开(公告)日:2020-08-11
申请号:US16746880
申请日:2020-01-19
申请人: John Howard
发明人: John Howard
摘要: A multi-polarized scanning phased array antenna is provided, which includes a first element, second element, first feed line, second feed line, first 180 degree phase shifter, second 180 degree phase shifter, third 180 degree phase shifter, fourth 180 degree phase shifter, Θ1 degree phase shifter, and Θ2 degree phase shifter. The first element is fed with a first polarization signal at a first feed point and a third feed point, and a second polarization signal at a second feed point and a fourth feed point. The second element is fed with the first polarization signal at a fifth feed point and a seventh feed point, and the second polarization signal at a sixth feed point and an eighth feed point. The first feed line is coupled to the elements and associated with the first polarization. The second feed line is coupled to the plurality of elements and associated with the second polarization. The first 180 degree phase shifter is coupled in the first feed line between the first and third feed points, and the second 180 degree phase shifter is coupled in the second feed line between the second and fourth feed points. The third 180 degree phase shifter is coupled in the first feed line between the fifth and seventh feed points, and the fourth 180 degree phase shifter is coupled in the second feed line between the sixth and eighth feed points. The Θ1 degree phase shifter is coupled in the first feed line between the third and seventh feed points, and the Θ2 degree phase shifter is coupled in the second feed line between the second and sixth feed points.
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60.
公开(公告)号:US20200153111A1
公开(公告)日:2020-05-14
申请号:US16746880
申请日:2020-01-19
申请人: John Howard
发明人: John Howard
摘要: A multi-polarized scanning phased array antenna is provided, which includes a first element, second element, first feed line, second feed line, first 180 degree phase shifter, second 180 degree phase shifter, third 180 degree phase shifter, fourth 180 degree phase shifter, Θ1 degree phase shifter, and Θ2 degree phase shifter. The first element is fed with a first polarization signal at a first feed point and a third feed point, and a second polarization signal at a second feed point and a fourth feed point. The second element is fed with the first polarization signal at a fifth feed point and a seventh feed point, and the second polarization signal at a sixth feed point and an eighth feed point. The first feed line is coupled to the elements and associated with the first polarization. The second feed line is coupled to the plurality of elements and associated with the second polarization. The first 180 degree phase shifter is coupled in the first feed line between the first and third feed points, and the second 180 degree phase shifter is coupled in the second feed line between the second and fourth feed points. The third 180 degree phase shifter is coupled in the first feed line between the fifth and seventh feed points, and the fourth 180 degree phase shifter is coupled in the second feed line between the sixth and eighth feed points. The Θ1 degree phase shifter is coupled in the first feed line between the third and seventh feed points, and the Θ2 degree phase shifter is coupled in the second feed line between the second and sixth feed points.
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