公开(公告)号：US5362524A

公开(公告)日：1994-11-08

申请号：US998086

申请日：1992-12-29

Applicant: Arunava Dutta ,  Mark A. Morrison ,  Leonard V. Dullea ,  Richard A. Kingston ,  Joseph A. Olsen

Inventor： Arunava Dutta ,  Mark A. Morrison ,  Leonard V. Dullea ,  Richard A. Kingston ,  Joseph A. Olsen

IPC: B05B5/08 ,  B05B5/12 ,  H01J9/22 ,  B05D1/06 ,  B05D7/22

CPC classification number: B05B5/082 ,  B05B5/12 ,  H01J9/225

Abstract: A method for providing an electric field having a desirable configuration and strength for the electrostatic coating of phosphors on a fluorescent glass envelope at a controlled temperature comprising enclosing a fluorescent glass envelope with at least one electrically conductive charge retaining member at a desired temperature for the duration of the actual electrostatic coating operation wherein charged phosphor particles are attracted to the interior of the glass envelope and the charge is dissipated to the charge retaining member which remains substantially electrically isolated during the coating process. The process is most suitable adapted to an asymmetric fluorescent glass envelope.

Abstract translation: 一种用于提供具有期望的配置和强度的电场的方法，用于在受控温度下在荧光玻璃外壳上静电涂覆荧光体，包括在期望温度下将至少一个导电电荷保持部件封装在荧光玻璃外壳上，持续时间 实际的静电涂覆操作，其中带电的荧光体颗粒被吸引到玻璃外壳的内部，并且电荷被耗散到电荷保持构件，其在涂覆过程期间保持基本上电隔离。 该方法最适合于不对称荧光玻璃外壳。

公开(公告)号：US5223782A

公开(公告)日：1993-06-29

申请号：US750783

申请日：1991-08-27

Applicant: Arunava Dutta ,  Leonard V. Dullea

Inventor： Arunava Dutta ,  Leonard V. Dullea

IPC: B01J8/42 ,  G01N27/60

CPC classification number: B01J8/42 ,  G01N27/60 ,  B01J2219/00164

Abstract: In a method for detecting the fluidity of particles in a vertically extending bed of fluidized particles, an electric charge which is generated on the particles is dissipated through an electrically conductive means in the fluidized bed to give an indication of the fluidity of the particles in the bed.

Abstract translation: 在用于检测流化颗粒的垂直延伸的床中的颗粒的流动性的方法中，在颗粒上产生的电荷通过流化床中的导电装置消散，以产生颗粒在流化床中的流动性的指示 床。

公开(公告)号：US4530710A

公开(公告)日：1985-07-23

申请号：US544669

申请日：1983-10-24

Applicant: Leonard V. Dullea ,  Frederick A. Loughridge ,  Stephen G. Johnson

Inventor： Leonard V. Dullea ,  Frederick A. Loughridge ,  Stephen G. Johnson

IPC: C03B23/207 ,  H01J9/26 ,  H01J9/00

CPC classification number: H01J9/266 ,  C03B23/207

Abstract: A method of manufacturing a low-pressure arc discharge lamp formed by interconnecting two or more parallel glass discharge tubes, each tube being sealed at one end. A hermetically sealed arc-containing channel between the two adjacent tubes is formed by heating opposing sections of the two tubes to soften a first and second site on each of the respective tubes. Then, one of the tubes is pressurized until a glass bubble forms from the softened site; the bubble is blown toward and onto the other tube about the softened site thereof. The pressure in the first tube is then released, and pressure is applied in the second tube to form a second glass bubble which fuses with the first glass bubble and bursts into the first tube thereby forming the sealed arc-containing channel between the two tubes. The technique may be applied to multiple tube assemblies by alternating the end of the tube at which the joint is formed. Once the tubes are joined, they may be processed by current manufacturing techniques to produce a low-pressure arc discharge lamp.

Abstract translation: 制造通过将两个或更多个平行的玻璃放电管互连而形成的低压电弧放电灯的方法，每个管在一端被密封。 通过加热两个管的相对部分来软化相应管中的每个管上的第一和第二部位，形成两个相邻管之间的气密的含弧通道。 然后，一个管被加压，直到从软化部位形成玻璃泡; 气泡在其周围的软化部位被吹向另一个管。 然后释放第一管中的压力，并且在第二管中施加压力以形成第二玻璃泡，该第二玻璃泡与第一玻璃泡熔融并且喷射到第一管中，从而在两个管之间形成密封的含弧通道。 该技术可以通过交替形成接头的管的端部来应用于多个管组件。 一旦管接合，它们可以通过当前的制造技术进行处理以产生低压电弧放电灯。

公开(公告)号：US5160663A

公开(公告)日：1992-11-03

申请号：US805335

申请日：1991-12-09

Applicant: Arunava Dutta ,  Leonard V. Dullea

Inventor： Arunava Dutta ,  Leonard V. Dullea

IPC: C09K11/01 ,  C09K11/77

CPC classification number: C09K11/01 ,  C09K11/7734 ,  C09K11/7774 ,  C09K11/7784 ,  Y02W30/72

Abstract: A fluorescent lamp phosphor product is recovered from a degraded aqueous suspension by treating a separated solids portion of the suspension with nitric acid to solubilize a decomposed portion of a rare earth activated yttrium oxide phosphor and form a remaining mixture of phosphors which may be reconstituted to a fluorescent lamp phosphor product suitable for use in a lamp.

Abstract translation: 通过用硝酸处理悬浮液的分离的固体部分以溶解稀土活化的氧化钇荧光体的分解部分并形成剩余的可以重构为的混合物，从降解的水性悬浮液中回收荧光灯荧光体产物 荧光灯荧光粉产品适用于灯具。

公开(公告)号：US5126166A

公开(公告)日：1992-06-30

申请号：US632459

申请日：1990-12-21

Applicant: Arunava Dutta ,  Ernest A. Dale ,  Leonard V. Dullea

Inventor： Arunava Dutta ,  Ernest A. Dale ,  Leonard V. Dullea

IPC: C09K11/02 ,  C09K11/77 ,  H01J61/46

CPC classification number: C09K11/025 ,  C09K11/7787 ,  H01J61/46

Abstract: A method has been found which reduces substantially the degradation of the red phosphor, Y.sub.2 O.sub.3 :Eu, in water base fluorescent lamp suspension, thereby prolonging the shelf life of triphosphor suspensions. The method of the invention comprises forming a protective coating around individual particles of europium-doped yttrium oxide phosphor to inhibit degradation of europium-doped yttrium oxide phosphor in a water base phosphor coating suspension, the protective coating comprising an inorganic material and being of sufficient thickness to prevent the europium-doped yttrium oxide phosphor from reacting with the coating suspension. A preferred coating material is gamma-alumina.

Abstract translation: 已经发现一种在水基荧光灯悬浮液中基本上降低了红色荧光体Y 2 O 3：Eu的降解的方法，从而延长了三荧光体悬浮液的保质期。 本发明的方法包括在铕掺杂钇氧化物荧光体的单个颗粒周围形成保护涂层，以抑制水基荧光粉涂覆悬浮液中铕掺杂的氧化钇荧光体的降解，该保护涂层包含无机材料并具有足够的厚度 以防止铕掺杂的氧化钇荧光体与涂层悬浮液反应。 优选的涂料是γ-氧化铝。

公开(公告)号：US5071590A

公开(公告)日：1991-12-10

申请号：US612942

申请日：1990-11-13

Applicant: Arunava Dutta ,  Leonard V. Dullea

Inventor： Arunava Dutta ,  Leonard V. Dullea

IPC: B01J8/24 ,  C09K11/02

CPC classification number: C09K11/025 ,  B01J8/1872 ,  Y10S423/16

Abstract: This invention concerns the addition of fibrous alumina material to a phosphor or phosphor mixture before fluidization as a means of increasing the cohesiveness of the phosphor or phosphor mixture. The increase in cohesiveness can be controlled by varying the concentration of the fiber in the mixture.

Abstract translation: 本发明涉及在流化之前将纤维状氧化铝材料添加到磷光体或磷光体混合物中作为增加荧光体或磷光体混合物的内聚力的手段。 可以通过改变混合物中纤维的浓度来控制粘结性的增加。

公开(公告)号：US5441774A

公开(公告)日：1995-08-15

申请号：US247919

申请日：1994-05-23

Applicant: Arunava Dutta ,  Leonard V. Dullea

Inventor： Arunava Dutta ,  Leonard V. Dullea

IPC: C09K11/02 ,  H01J9/22 ,  H01J61/46 ,  B05D5/06

CPC classification number: C09K11/02 ,  H01J61/46 ,  H01J9/221 ,  H01J9/225

Abstract: In process for forming a coating of phosphor particles on a fluorescent lamp glass, a polymer is deposited on the phosphor particles and the phosphor particles are entrained in a carrier gas with the polymer in a non-adhering state, and then the phosphor particles are coated on the fluorescent lamp glass with the polymer in an adhering state for retaining the phosphor particles on the fluorescent glass and, the coated fluorescent glass is heated to a temperature above the decomposition temperature of the polymer for removing the polymer and to form a coating of phosphor particles on a fluorescent lamp glass.

Abstract translation: 在荧光灯玻璃上形成荧光体颗粒涂层的过程中，聚合物沉积在荧光体颗粒上，并且荧光体颗粒被夹带在载体气体中，聚合物处于非粘附状态，然后将荧光体颗粒涂覆 在具有粘合状态的聚合物的荧光灯玻璃上，用于将荧光体颗粒保持在荧光玻璃上，并且将涂覆的荧光玻璃加热至高于聚合物分解温度的温度以除去聚合物并形成荧光体涂层 荧光灯玻璃上的颗粒。

公开(公告)号：US5302318A

公开(公告)日：1994-04-12

申请号：US737958

申请日：1991-07-30

Applicant: Arunava Dutta ,  Leonard V. Dullea

Inventor： Arunava Dutta ,  Leonard V. Dullea

IPC: B01J8/24 ,  C09K11/02 ,  B05C11/02

CPC classification number: C09K11/025 ,  B01J8/1872 ,  Y10S423/16

Abstract: This invention concerns the addition of fibrous alumina material to a phosphor or phosphor mixture before fluidization as a means of increasing the cohesiveness of the phosphor or phosphor mixture. The increase in cohesiveness can be controlled by varying the concentration of the fiber in the mixture.

Abstract translation: 本发明涉及在流化之前将纤维状氧化铝材料添加到磷光体或磷光体混合物中作为增加荧光体或磷光体混合物的内聚力的手段。 可以通过改变混合物中纤维的浓度来控制粘结性的增加。

公开(公告)号：US5167982A

公开(公告)日：1992-12-01

申请号：US632460

申请日：1990-12-21

Applicant: Arunava Dutta ,  Ernest A. Dale ,  Leonard V. Dullea

Inventor： Arunava Dutta ,  Ernest A. Dale ,  Leonard V. Dullea

IPC: C09K11/77 ,  G01N21/64

CPC classification number: G01N21/64 ,  C09K11/7787

Abstract: A an europium doped yttrium oxide red phosphor in a water base phosphor coating suspension is checked for degraded phosphor by (a) centrifuging the suspension, (b) separating an aqueous portion from a solids portion, (c) exposing a surface portion of said solids to UV radiation at 254 nm or 365 nm, (d) observing the presence or absence of fluorescence from said top layer of solids wherein the absence of fluorescence is indicative of a degraded phosphor.

Abstract translation: 通过（a）离心悬浮液，（b）从固体部分分离水性部分，（c）将所述固体的表面部分暴露出来，检查水基磷光体涂层悬浮液中的铕掺杂的氧化钇红色磷光体 在254nm或365nm处的UV辐射，（d）观察来自所述顶层固体的荧光存在或不存在，其中不存在荧光指示降解的荧光体。

公开(公告)号：US4990371A

公开(公告)日：1991-02-05

申请号：US388187

申请日：1989-08-01

Applicant: Arunava Dutta ,  Leonard V. Dullea ,  Ernest A. Dale

Inventor： Arunava Dutta ,  Leonard V. Dullea ,  Ernest A. Dale

IPC: B01J2/00 ,  B01J8/26 ,  C09K11/08 ,  C23C16/44 ,  C23C16/442

CPC classification number: B01J8/36 ,  B01J2/006 ,  B01J8/26 ,  C23C16/442

Abstract: The present invention is directed to processes and apparatus useful for fluidizing small particulate solids having a diameter of less than about 50 microns in average particle size, and at least partially enveloping these small solids with a coating material or a precursor thereto. The basic apparatus of this invention comprises:a cross-current multi-stage fluid bed reactor having N fluid beds in flow communication with one another, wherein N>2;means for introducing small solid particles to a bed selected from the N beds of the reactor;means for introducing a fluidizing gas to the N beds of the reactor, thereby promoting a flow of the small solid particles from the first bed through bed #N of the multi-stage fluid bed reactor;means for introducing a coating material or a precursor thereto, to one or more of the N beds of the reactor;means for distributing the coating material or precursor thereto throughout the cross-section of the reactor beds containing the same;means for controlling the residence or contact time of the small articulate solids in the beds containing the coating material or the precursor thereto, such that the small particulate solids therein are at least partially enveloped by the coating material or precursor thereto; andone or more exit means for removal of the fluidizing gas and the small solid particles at least partially enveloped by coating material or precursor thereto.

Abstract translation: 本发明涉及可用于流化具有平均粒度小于约50微米的直径的小颗粒固体的方法和装置，并且用涂料或其前体至少部分地包封这些小固体。 本发明的基本装置包括：具有N个彼此流动连通的流体床的交叉流动多级流化床反应器，其中N≥2; 将小固体颗粒引入选自反应器的N个床的床的装置; 用于将流化气体引入到反应器的N个床中的装置，从而促进小固体颗粒从第一床通过多级流化床反应器的床#N的流动; 用于将涂料或其前体引入反应器的一个或多个N床的装置; 用于在包含其的反应器床的整个横截面上分配涂料或其前体的装置; 用于控制小型铰接固体在含有涂料或其前体的床中的居住或接触时间的装置，使得其中的小颗粒固体至少部分地被涂覆材料或其前体包围; 以及用于去除流化气体和至少部分地被涂覆材料或其前体包围的小固体颗粒的一个或多个出口装置。