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    • 41. 发明申请
    • METHOD AND APPARATUS FOR IMPROVING LIGHT LOAD EFFICIENCY IN SWITCHING POWER SUPPLIES
    • 改善开关电源轻负载效率的方法和装置
    • US20080042709A1
    • 2008-02-21
    • US11743468
    • 2007-05-02
    • Rengang ChenJames Brown
    • Rengang ChenJames Brown
    • H03K3/017
    • H02M3/156H02M2001/0032Y02B70/16
    • A circuit for transitioning between a discontinuous and a fixed frequency continuous conduction mode (DCM) and (CCM) of a power converter having a driver receiving PWM signals and controlling a switching stage comprises a control switch and a sync switch connected at a common switching node for driving a load. The circuit including a PWM modulator for providing PWM signals; and a mode selector for receiving a duty cycle value, a preset switching period, and a duty cycle at a critical conduction point having a switching frequency equal to the preset switching period and providing an on-time of the control switch and a switching period to the PWM modulator, wherein if the duty cycle value is greater than the duty cycle at a critical conduction point, the PWM modulator will drive will provide the PWM signals to operate the switching stage in the CCM with constant-frequency duty cycle control, and if the duty cycle value is less than duty cycle at a critical conduction point, the PWM modulator will drive will provide the PWM signals to operate the switching stage in the DCM by turning off the sync switch when a load current becomes negative.
    • 用于在具有接收PWM信号并控制切换级的驱动器的功率转换器的不连续和固定频率连续传导模式(DCM)和(CCM)之间转换的电路包括控制开关和在公共交换节点处连接的同步开关 用于驱动负载。 该电路包括用于提供PWM信号的PWM调制器; 以及模式选择器,用于在具有等于预设开关周期的开关频率的临界导通点处接收占空比值,预设开关周期和占空比,并且提供控制开关的导通时间和开关周期 PWM调制器,其中如果占空比值大于临界导通点的占空比,则PWM调制器将驱动将提供PWM信号以恒定频率占空比控制在CCM中操作开关级,并且如果 占空比值小于临界导通点的占空比,当负载电流变为负时,PWM调制器驱动将通过关闭同步开关来提供PWM信号来操作DCM中的开关级。
    • 45. 发明授权
    • Surgical scrub brush
    • 手术洗刷刷
    • US5035468A
    • 1991-07-30
    • US522677
    • 1990-05-11
    • James BrownJack W. Kaufman
    • James BrownJack W. Kaufman
    • A46B11/00A46B15/00A47K7/02A47L13/16A61B19/00
    • A47K7/02A46B11/001A46B15/00A61B90/80
    • This application discloses a method for assembling a scrub brush having a plurality of bristles integrally on one side of a thermoplastic backing and an open-cell organic sponge bonded to the other side of the backing by carrying out successively the following steps:a) forming the thermoplastic brush and bristles;b) melting a plurality of protrusions on the side of the backing away from the bristles with applied heat;c) placing the sponge on the molten protrusions; andd) maintaining contact between the molten protrusions and the sponge;whereby the molten protrusions are drawn by capillarity into the stroma network of the sponge.
    • 本申请公开了一种通过依次执行以下步骤来组装具有多个刷毛的刷毛的方法,所述刷毛具有多个刷毛,所述刷毛整体地位于热塑性背衬的一侧上,并且通过连续地连接到所述背衬的另一侧而开放的开孔细胞有机海绵:a) 热塑刷和刷毛; b)利用加热使背衬远离刷毛的多个凸起熔化; c)将海绵放置在熔融的突起上; 和d)保持熔融突起和海绵之间的接触; 由此熔融的突起物通过毛细管吸引到海绵的基质网络中。
    • 49. 发明申请
    • Dispensing Applicator for Fluids
    • 液体分配器
    • US20140126949A1
    • 2014-05-08
    • US14068905
    • 2013-10-31
    • Jack W. KaufmanJames Brown
    • Jack W. KaufmanJames Brown
    • A61F13/40
    • A61M35/006A45D34/04A45D2200/1018A61L2/00A61L2/18A61M35/003A61M2205/273B43M11/06
    • A single-piece, injection molded, hand-held liquid dispensing applicator. The single-piece applicator comprising a source of fluid and a frangible applicator tip attached to the fluid source. When the frangible applicator tip is broken, the fluid flows from the source to an absorbent member attached to the applicator tip to spread the liquid on a surface. The frangible tip may comprise a support element permanently connected to the fluid source, a relatively rigid tongue element, and a frangible region therebetween. The tongue element may comprise ribs for reinforcement. The frangible tip may comprise a semi-permeable or non-permeable cover to control the speed and direction of the dispersion of the fluid. The dispensing applicator may be used in various medical applications.
    • 单件式注射成型的手持液体分配器。 单件式涂布器包括流体源和连接到流体源的易碎施用器尖端。 当易碎的施用器尖端断裂时,流体从源极流到附接到施用器尖端的吸收构件,以将液体扩散在表面上。 易碎尖端可以包括永久地连接到流体源的支撑元件,相对刚性的舌元件以及它们之间的易碎区域。 舌元件可以包括用于加强的肋。 易碎的尖端可以包括半渗透或不可渗透的盖,以控制流体的分散体的速度和方向。 分配施加器可以用于各种医疗应用中。
    • 50. 发明授权
    • Aerofoil slot blowing
    • 机油槽吹
    • US08573542B2
    • 2013-11-05
    • US12855793
    • 2010-08-13
    • James Brown
    • James Brown
    • B64C3/00
    • B64C21/04Y02T50/166
    • An aerofoil defining geometric upper and lower surfaces which together form a leading edge region and a trailing edge region, and comprising a blowing device having a slot in the lower geometric surface in the leading edge region for injecting fluid into the airflow over the aerofoil, wherein the slot is located forward of the leading edge stagnation point at the critical angle of incidence of the aerofoil, and wherein the blowing device is adapted to inject the fluid forwardly of the slot and substantially parallel to the lower surface. Also, a method of improving the performance of the aerofoil by injecting fluid into the airflow over the aerofoil from the slot. The upper surface of the aerofoil can be kept clean, giving the potential for laminar flow during cruise without significantly compromising the high lift performance of a blown leading edge at high incidence.
    • 机翼限定几何上下表面,它们一起形成前缘区域和后缘区域,并且包括吹风装置,该吹风装置在前缘区域中的下几何表面中具有狭槽,用于将流体喷射到机翼上的气流中,其中 所述槽位于所述翼缘的临界入射角处的所述前缘停滞点的前方,并且其中所述吹风装置适于将所述流体向前注入并基本上平行于所述下表面。 而且,一种通过将流体从狭槽喷射到机翼上的空气中来提高机翼的性能的方法。 机翼的上表面可以保持清洁,在巡航期间具有层流的潜力,而不会显着损害高发射时的吹风前缘的高提升性能。