公开(公告)号：US4407193A

公开(公告)日：1983-10-04

申请号：US159702

申请日：1980-06-16

申请人： David A. Hall ,  George P. Olson

发明人： David A. Hall ,  George P. Olson

IPC分类号： B41J1/30 ,  B41J9/44 ,  B41J9/48 ,  G06K15/08 ,  B41J7/92

CPC分类号： B41J9/48

摘要： In an impact printer including a print wheel having a plurality of selectable character type bearing elements for respectively printing a plurality of characters, said print wheel being rotatable for selectively positioning selected type elements in successive print positions, impact means impellable against the selected elements to drive said elements against the printing medium and means for impelling the impact means against said selected type element, the present invention provides the improvement comprising the combination of means for sensing the flight time of the impelled impact means until impact by sensing variations in the velocity of said impact means, means for comparing the sensed flight time to a predetermined ideal flight time, and means for selectively varying the amplitude of the current to the impelling means to adjust the sensed flight time to equal the ideal flight time.

摘要翻译： 在包括具有用于分别打印多个字符的多个可选择字符型承载元件的打印轮的冲击打印机中，所述打印轮可旋转，以便选择性地将所选择的类型元件定位在连续的打印位置，冲击装置能够抵靠所选择的元件驱动 相对于打印介质的所述元件以及用于将冲击装置推向所述选定型元件的装置，本发明提供了改进，其包括用于感测推进的冲击装置的飞行时间直到冲击的装置的组合， 冲击装置，用于将感测的飞行时间与预定的理想飞行时间进行比较的装置，以及用于选择性地改变到推进装置的电流的振幅以将感测的飞行时间调整到等于理想飞行时间的装置。

公开(公告)号：US4537720A

公开(公告)日：1985-08-27

申请号：US560283

申请日：1983-12-12

申请人： David A. Hall

发明人： David A. Hall

IPC分类号： C07D205/095 ,  C07D409/12 ,  C07D498/04 ,  C07D205/08 ,  C07D403/12 ,  C07D405/12

CPC分类号： C07D409/12 ,  C07D205/095

摘要： N-substituted-2-(R)-(sulfinic acid)-3-(S)-(acylamino)-4-oxo-azetidines, which are useful as intermediates in 1-oxa .beta.-lactam antibiotics, are synthesized by electrolytic reduction of 7-(S)-acylamino-3-hydroxymethyl-3-cephem-4-carboxylic acid compounds.

摘要翻译： 可用作1-氧杂β-内酰胺抗生素中间体的N-取代-2-（R） - （亚磺酸）-3-（S） - （酰基氨基）-4-氧代 - 氮杂环丁烷是通过电解还原 的7-（S） - 酰氨基-3-羟甲基-3-头孢烯-4-羧酸化合物。

公开(公告)号：US20110091859A1

公开(公告)日：2011-04-21

申请号：US12582006

申请日：2009-10-20

申请人： David A. Hall

发明人： David A. Hall

IPC分类号： G09B7/00

CPC分类号： G09B7/08

摘要： A curriculum is created aligned closely to the state standards. This is broken down into tiny units called factoids, analogous to atoms in chemistry. The factoids are converted into question-and-answer pairs. These are placed on electronic flashcards so that they can be sorted according to the degree of mastery. There is a question on one side and an answer on the other. They are answered mentally. A user/student can choose from the options “Show again: Today, A, B, C, or Never” depending on his/her understanding of the question. A software system remembers each student as an individual and the status of each flashcard that the student has attempted to answer. There are five tiers in the classification system: school> year> subject> topic> and subtopic. A subtopic would contain from 10 to 100 flashcards depending upon the grade level.

摘要翻译： 创建一个与国家标准密切相关的课程。 这被分解为称为事实的微小单元，类似于化学中的原子。 factoids被转换成问答对。 这些放置在电子贺卡上，以便根据掌握程度进行分类。 另一方面有一个问题，另一方面有答案。 他们在精神上回答。 用户/学生可以根据他/她对问题的理解从“再次显示：今天，A，B，C或从不”中选择。 软件系统将每个学生记录为个人，以及学生尝试回答的每个闪卡的状态。 分类系统有五个层次：学校>年>主题>主题>和副题。 副题将包含10到100张卡，取决于年级。

公开(公告)号：US5605557A

公开(公告)日：1997-02-25

申请号：US388464

申请日：1995-02-14

申请人： David A. Hall

发明人： David A. Hall

IPC分类号： C05C5/04 ,  C05D9/00 ,  C05G3/00

CPC分类号： C05G3/0064 ,  C05C5/04 ,  C05D9/00 ,  Y10S71/903

摘要： A conditioning composition comprising from 60 to 80% by weight of a mineral source, from 20 to 40% by weight of basalt, from 2 to 5% by weight of a bonding agent, from 1 to 20% by weight of a mixed colloidal mineral source and an amount of catalyst provided in the ratio of at least one half liter of catalyst to at least 20 liters of water per 10 ton of composition. A catalyst for use with a conditioning composition, the catalyst comprising water, calcium nitrate, molasses, phosphoric acid and at least one non-ionic surfactant, each being provided in the following amounts (w/w):______________________________________ water 30 to 60% calcium nitrate 2 to 40% urea 30 to 70% molasses 3 to 35% phosphoric acid 3 to 35% non-ionic surfactant 1 to 10%. ______________________________________

摘要翻译： 调理组合物，其包含60至80重量％的矿物源，20至40重量％的玄武岩，2至5重量％的粘合剂，1至20重量％的混合胶体矿物质 来源和一定量的催化剂，其以每10吨组合物至少一个半升的催化剂与至少20升的水的比例提供。 一种用于调理组合物的催化剂，包含水，硝酸钙，糖蜜，磷酸和至少一种非离子表面活性剂的催化剂各自以下列量（w / w）提供： - 水30至60％ - 硝酸钙2〜40％ - 尿素30〜70％ - 糖蜜3〜35％ - 磷酸3〜35％ - 非离子表面活性剂1〜10％。 -

公开(公告)号：US5062720A

公开(公告)日：1991-11-05

申请号：US479294

申请日：1990-02-13

申请人： David A. Hall ,  John R. Marjancik

发明人： David A. Hall ,  John R. Marjancik

IPC分类号： F16C33/76 ,  F16C35/067

CPC分类号： F16C35/067 ,  F16C33/76 ,  F16C33/768 ,  F16C19/26

摘要： A self lubricating replacement bearing assembly for supporting a rotating axle shaft within an axle housing containing axle lubricant. The rotating axle shaft includes an annular worn portion and an annular unworn portion. The bearing assembly is comprised of an annular sleeve member positioned in sealing engagement with the axle housing, and a plurality of bearing elements radially positioned on the inside annular surface of the annular sleeve member and positioned to engage the unworn portion or the axle shaft, and a single lip seal member fitted to the inner annular surface of the sleeve member and engageable with the rotating shaft to seal the rotating shaft within the axle housing and to retain the axle lubricant within the bearing assembly.

摘要翻译： 一种自润滑更换轴承组件，用于在轴轴壳内支撑旋转轴轴，其包含轴润滑剂。 旋转轴轴包括环形磨损部分和环形未磨损部分。 所述轴承组件包括定位成与所述轴壳体密封接合的环形套筒构件和径向地定位在所述环形套筒构件的内部环形表面上并被定位成接合所述未磨削部分或所述车轴的多个轴承元件，以及 单个唇形密封构件，其装配到套筒构件的内部环形表面并且可与旋转轴接合以将轴旋转轴密封在轴壳体内并将车轴润滑剂保持在轴承组件内。

公开(公告)号：US4402803A

公开(公告)日：1983-09-06

申请号：US301602

申请日：1981-09-14

申请人： David A. Hall

发明人： David A. Hall

IPC分类号： C07D501/22 ,  C07D501/04 ,  C07D501/20 ,  C25B3/04

CPC分类号： C25B3/04

摘要： Cephem compounds having only a hydrogen at the 3-position are prepared by electrolytic reduction of 3-chloro or 3-sulfonyloxy cephems.

摘要翻译： 通过3-氯或3-磺酰氧基间苯二酚的电解还原制备在3-位上仅具有氢的头孢烯化合物。

公开(公告)号：US20160155348A1

公开(公告)日：2016-06-02

申请号：US15018821

申请日：2016-02-08

申请人： David A. Hall

发明人： David A. Hall

IPC分类号： G09B7/08 ,  G09B5/06

摘要： A curriculum is created aligned closely to the state standards. This is broken down into tiny units called factoids, analogous to atoms in chemistry. The factoids are converted into question-and-answer pairs. These are placed on electronic flashcards so that they can be sorted according to the degree of mastery. There is a question on one side and an answer on the other. They are answered mentally. A user/student can choose from the options “Show again: Today, A, B, C, or Never” depending on his/her understanding of the question. A software system remembers each student as an individual and the status of each flashcard that the student has attempted to answer. There are five tiers in the classification system: school>year>subject>topic>and subtopic. A subtopic would contain from 10 to 100 flashcards depending upon the grade level.

摘要翻译： 创建一个与国家标准密切相关的课程。 这被分解为称为事实的微小单元，类似于化学中的原子。 factoids被转换成问答对。 这些放置在电子贺卡上，以便根据掌握程度进行分类。 另一方面有一个问题，另一方面有答案。 他们在精神上回答。 用户/学生可以根据他/她对问题的理解从“再次显示：今天，A，B，C或从不”中选择。 软件系统将每个学生记录为个人，以及学生尝试回答的每个闪卡的状态。 分类系统有五个层次：学校>年>主题>主题>和副题。 副题将包含10到100张卡，取决于年级。

公开(公告)号：US4989863A

公开(公告)日：1991-02-05

申请号：US284365

申请日：1988-12-14

申请人： David A. Hall

发明人： David A. Hall

IPC分类号： A63D15/00

CPC分类号： A63D15/00

摘要： A ball games table comprises a table top demountably fixed to a table base, the top being boarding with sheeting forming a playing surface stretched over its upper surface: one of the boarding and sheeting being water impervious. The sheeting may comprise a plurality of sheets each covering the boarding, at least one of which is water impervious; the boarding itself may be water impervious. The use of rubber sheeting is described as is canvas or tarpaulin sheets with one or more plastics sheets positioned between the sheet and the boarding. The boarding may be a number of separate parts, held together by the sheeting (and optionally hinged together), and rigidly interconnected as the table is assembled. The abutting edges of the parts of the top may extend in different directions and be non-linear; following meandering, wavey or zig-zag paths, when the table is assembled. To level the playing surface the table legs are adjustable in length and the top is, in one embodiment, supported on the table base with the interposition of a plurality of members the heights of which may be individually varied.

摘要翻译： 一个球类桌子包括一个可拆卸地固定在桌子底座上的台面，顶部以片材形式登上，形成一个在其上表面上延伸的游戏表面：其中一个登机牌和防水片是防水的。 该片材可以包括多个片材，每个片材覆盖该衬板，其中至少一个是防水的; 登机本身可能是防水的。 橡胶片的使用被描述为帆布或帆布板，其中一个或多个塑料片位于片材和登机之间。 登机可以是多个单独的部件，通过片材（并且可选地铰接在一起）保持在一起，并且在桌子组装时刚性互连。 顶部部分的邻接边缘可以在不同方向上延伸并且是非线性的; 随着曲折，波形或曲折路径，当桌子组装。 为了调平播放表面，桌腿的长度是可调节的，并且在一个实施例中，顶部被支撑在桌子底座上，插入多个构件，其高度可以单独变化。

公开(公告)号：USD303277S

公开(公告)日：1989-09-05

申请号：US838032

申请日：1986-02-27

申请人： David A. Hall

设计人： David A. Hall

公开(公告)号：US4459405A

公开(公告)日：1984-07-10

申请号：US442076

申请日：1982-11-16

申请人： David A. Hall

发明人： David A. Hall

IPC分类号： C07D501/26 ,  C12N11/08 ,  C12N11/14 ,  C12P35/00

CPC分类号： C12N11/08 ,  C12N11/14

摘要： 7-(S)-Acylamino-3-hydroxymethyl-3-cephem sulfones are disclosed. These compounds are intermediates in the synthesis of 1-oxa .beta.-lactam antibiotics.

摘要翻译： 公开了7-（S） - 氨基-3-羟甲基-3-头孢烯砜。 这些化合物是1-氧杂β-内酰胺抗生素合成中的中间体。